Zeal Education Society’s

ZEAL POLYTECHNIC, PUNE

NARHE │PUNE -41 │ INDIA

DEPARTMENT OF ELECTRICAL ENGINEERING

SECOND YEAR (SY)

SCHEME: I SEMESTER: IV
NAME OF SUBJECT: INDUSTRIAL
MEASUREMENT
SUBJECT CODE: 22420

UNIT WISE MULTIPLE CHOICE

QUESTIONS BANK
 ZEAL EDUCATION SOCIETY’S

ZEAL POLYTECHNIC,PUNE
NARHE │PUNE -41 │ INDIA
DEPARTMENT OF ELECTRICAL ENGINEERING

Question Bank for Multiple Choice Questions

Program: Diploma in Electrical engineering Program Code:- EE

Scheme:-I Semester:- 4
Course:- Industrial Measurement Course Code:-22420

01 – Applications of Transducers Marks:-12

1.1 Function of each block of Instrumentation system.
1.2 Transducer: Need, Classification Active and Passive, Analog and Digital, Primary and Secondary,
Mechanical and Electrical.
1.3 Electrical Transducers: Resistive transducers-Linear and Angular potentiometers, strain gauge, types,
gauge factor.
1.4 Capacitive transducer.
1.5 Inductive transducer- LVDT, RVDT.
1.6 Piezoelectric transducer, photo voltaic cell.
1.7 Selection criteria of transducers.

Ques.1. A measuring system consists of

1. Sensors
2. Variable conversion elements
3. Signal processing elements
4. All of these
Answer.4. All of these
Explanation: A measuring system exists to provide information about the physical value of some variable
being measured. In simple cases, the system can consist of only a single unit that gives an output reading
or signal according to the magnitude of the unknown variable applied to it. However, in more complex
measurement situations, a measuring system consists of several separate elements as shown in Figure.
The measurement sensor includes
1. Primary Sensors
2. Variable conversion elements
3. Signal processing
4. Signal recording
Primary Sensors:- The first element in any measuring system is the primary sensor: this gives an output
that is a function of the measurand (the input applied to it). Some examples of primary sensors are a liquid-
in-glass thermometer, a thermocouple, and a strain gauge. In the case of the mercury-in-glass
thermometer, the output reading is given in terms of the level of the mercury, and so this particular primary
sensor is also a complete measurement system in itself. However, in general, the primary sensor is only
part of a measurement system.
Variable conversion elements:- They are needed where the output variable of a primary transducer is in an
inconvenient form and has to be converted to a more convenient form. For instance, the displacement-
measuring strain gauge has an output in the form of a varying resistance. The resistance change cannot be
easily measured and so it is converted to a change in voltage by a bridge circuit, which is a typical example
Page 1 of 40
of a variable conversion element. In some cases, the primary sensor and variable conversion element are
combined, and the combination is known as a transducer
Signal processing elements:- Signal processing elements exist to improve the quality of the output of a
measurement system in some way. It is important that the measurement system is designed properly such
that the output from measurement sensors is of an appropriate amplitude and is as free from noise
contamination as possible. The electronic amplifier is a very common type of signal processing element.
This is used to amplify low-amplitude outputs from the primary transducer or variable conversion element,
thus improving the sensitivity and resolution of the measurement.
For example, amplification is needed for thermocouples, which have a typical output of only a few millivolts.
Other types of signal processing element are those that filter out induced noise and remove mean levels,
etc. In some devices, signal processing is incorporated into a transducer, which is then known as a
transmitter.

Ques.2. An instrument in which the value of ethnical quantity to be measured can be determined
from the deflection of the instrument when it has been precalibrated by comparison with an
absolute instrument
1. Absolute instrument
2. Secondary instrument
3. Recording instrument
4. Integrating instrument
Answer.2. Secondary Instrument
Explanation:-
In a broad sense, analog instruments may be classified into two ways:
1. Absolute instruments
2. Secondary instruments
Absolute instruments:- Absolute instruments give the value of the electrical quantity to be measured in
terms of the constants of the instruments and to its deflection, no comparison with another instrument being
required. For example, the tangent galvanometer gives the value of the current to be measured in terms of
the tangent of the angle of deflection produced by the current, the radius and the number of turns of
galvanometer coil, and the horizontal component of the earth’s magnetic fierce. No calibration of the
instrument is thus necessary.
Secondary instruments:- Secondary instruments are so constructed that the value of current, voltage or
other quantity to be measured can be determined from the malefaction of the instruments, only if the latter
has been calibrated by comparison with either an absolute instrument or one which has already been
calibrated. The deflection obtained is meaningless until such a calibration has been made.
This class of instruments is in most general use, the absolute instrument being seldom used except in
standard laboratories and similar institutions.
The secondary instruments may be classified as
1. Indicating instruments
2. Recording instruments
3. Integrating instruments
Indicating instruments are instruments which indicate the magnitude of a quantity being measured. They
generally make use of a dial and a pointer for this purpose.
Recording instruments give a continuous record of the quantity being measured over a specified period.
The variation of the quantity being measured is recorded by a pen Attache to the moving system of the
instrument; the moving system is operated by the quantity being measured on a sheet of paper that moves
perpendicular to the movement of the pen.
Integrating instruments record totalized events over a specified period of time. The summation, which they
give, is the product of time and an electrical quantity. Ampere-hour and watt-hour (energy) meters are
examples of this category.
Page 2 of 40
Ques.3. A pointer of an instrument once deflected returns to zero position, when the current is
removed due to
1. Action of gravity
2. Mass of the pointer
3. Controlling Torque
4. Damping Torques
Answer.3. Controlling torque
Explanation:-
Basically, there are three types of Force or torque act upon the Measuring Instrument
1. Deflecting Torque
2. Controlling Torque
3. Damping Torque
Deflecting Torque: In order to move the pointer from its zero position on the scale deflecting torque is
required. The deflecting torque works on the moving system which the pointer is attached. Obviously, the
magnitude of deflecting torque produced is proportional to the magnitude of the quantity being measured,
say, the current I flowing through the instrument. A deflecting torque is required to overcome the inertia,
damping effect and controlling effect of the moving system.
This deflecting torque can be produced by any of this effects of current (or of voltage) such as
1. Magnetic effect
2. Electrostatic effect
3. Electromagnetic effect
4. Thermal effect
5. Chemical Effect
Controlling Torque: With the help of the deflecting torque, the pointer deflection will take place on the
calibrated scale but to stop the pointer at the definite position, controlling torque (Tc.) comes into action. As
the deflection of the pointer increases, the controlling torque also increases and stops the pointer at the
measured value.
Controlling torque is also known as restoring torque i.e., it brings back the pointer to its zero position when
deflecting torque is withdrawn. The pointer attains a steady position when controlling torque becomes
numerically equal to deflecting torque i.e., Tc = Td
Spring control and gravity control are used for controlling torque.
Damping Torque: At the final deflected position, when the deflecting and controlling torques are equal, the
pointer starts oscillating owing to its inertia and therefore, cannot immediately settle at its final deflected
position. If no extra force is provided to damp these oscillations, the moving system will take considerable
time before coming to settle to the final deflected position. This is especially undesirable if the number of
readings to be taken is quite large.

Ques.4. In hot wire instrument, the sensing wire is made of

1. Copper
2. Silver
3. Platinum-iridium
4. Copper-Nickel
Answer.3. Platinium-iridium
Explanation:-
These instruments utilize the principle of expansion of wire, heat due to the current being measured,
passing through the wire.
It consists of a hot wire of platinum-iridium (because it can withstand high temperatures of about 300°C
without being oxidized), and about 0.2 mm in diameter.

Page 3 of 40
Ques.5. An ammeter is inserted in _______
1. Series in a circuit and current to be measured flows through it
2. Series in a circuit and part of the current to be measured flows through it
3. Parallel in a circuit and current to be measured flows through it
4. Parallel in a circuit and only part of the current to the measured flows through it.
Hide Explanation
Answer.1. Is connected in parallel in a circuit and current to be measured flows through it
Explanation:-
An ammeter is connected in series with the load
To measure current, you want most of the current to pass through it. Hence ammeter is connected in
series with the low resistance
An ammeter measures the value of current flowing in the circuit, so current should flow inside ammeter to
give proper result. it acts like a closed switch so it indicates the current. And it has very low resistance to
ensure the correct measurement of current in the circuit. If it is connected in parallel across any load then
all current in the circuit will choose the lower resistive path (i.e ammeter) to cause its circuit to be damaged.
Hence it is used in series.

Ques.6. An ammeter is convertible to a voltmeter by

1. Changing the scale
2. Putting a large resistance in parallel with the actual measuring part of the instrument
3. Putting a large resistance in series with the actual measuring part of the instrument
4. Simply installing the instrument in parallel with the circuit
Answer.3. Putting a large resistance in series with the actual measuring part of the instrument
Explanation:-
An ammeter is used to. measure current in amperes. It is a moving coil galvanometer in which a low
resistance wire is connected in parallel. An ammeter is converted into voltmeter by putting a large
resistance in series with the actual measuring part of the instrument.
Let
Vr- Voltage range you required to measure (KNOWN VALUE)
If– Current required to full-scale deflection of your Ammeter (KNOWN VALUE)
Ra- Internal Resistance of Ammeter (Ideally Ra=0)
Rs- Resistance Should be Connected in Series with your existing Ammeter=?
Vr=(Ra + Rs) × (If)Vr=(Ra+Rs) × (If)
Vr=(Rs×If)Vr=(Rs×If) (We know that Ra=0 )
Rs=Vr/If

Ques.7. Which of the following material will be preferred as a shunt for extending the range of
measurement of a voltmeter
1. Copper
2. Steel
3. Aluminum
4. Manganin
Answer.4. Manganin.

Ques.8. What should be the size of the slide wire of the potentiometer to make it to achieve high accuracy?
1. As long as possible
2. As short as possible
3. 1 meter
4. Neither too thin nor too thick
Answer.1. As long as possible
Page 4 of 40
Explanation:-
A potentiometer is an instrument designed to measure an unknown voltage by comparing it with a known
voltage. This known voltage is supplied by a standard cell or through a reference source. The
potentiometer makes use of null or balanced condition for the purpose of measurement.
The potential difference across a length of the potentiometer wire is directly proportional to its Length (or)
when a steady current is passed through a uniform wire, potential drop per unit length or potential gradient
is constant.
E ∝ L ⇒ E = φL
Where φ is the potential gradient
So In the case of longer wire, the fall of potential per unit length is small. In other words, the potential
gradient is small. Lesser the potential gradient, more accurate is the potentiometer.

Ques.09 Which of the following is not an integrating instrument?

1. Ampere-hour meter
2. Watt-hour meter
3. Voltmeter
4. All of the above
Answer.3. Voltmeter
Explanation:-Integrating Instruments:The instruments which add up the electrical quantity, i.e electrical
energy and measure the total energy (in kilowatt hours) or the total Amper hours (in ampere-hours)
supplied to a circuit in a given period are called integrating instruments.In such instruments, there are sets
of dials or gears which register the total quantity of electricity or the total amount of electrical energy
supplied to a circuit in a given period. Household energy meter is an integrating instrument. Ampere-hour
meter another example of integrating instruments.
Recording Instrument: The recording instruments are those instruments which give a continuous record
of the variations of the electrical quantity to be measured.

10. In wire wound strain gauges, the change in resistance is due to

a) Change in diameter of the wire
b) Change in length of the wire
c) Change in both length and diameter
d) Change in resistivity
Ans : (c)

11. Bonded wire strain gauges are

a) Exclusively used for construction of transducers
b) Exclusively used for stress analysis
c) Used for both stress analysis and construction of transducer
d) Pressure measurement
Ans : (c)

12. Certain type of materials generates an electrostatic charge or voltage when mechanical force is
applied across them. Such materials are called
a) Piezo-electric
b) Photo-electric
c) Thermo-electric
d) Photo-resistive
Ans : (a)

Page 5 of 40
13. Quartz and Rochelle salt belongs to _______ of piezo-electric materials
a) Natural group
b) Synthetic group
c) Natural or Synthetic group
d) Fiber group
Ans : (a)

14. Which of the following are piezo electric substances?

1. Barium titanate
2. Lead titanate
3. Lead Zirconate
4. Cadmium and sulphate
Choose correct one
a) 1,2 and 4
b) 1,3and4
c) 1,2and 3
d) 2,3and 4
Ans : (c)

15. Piezo-electric transducers are

a) Passive transducers
b) Inverse transducers
c) Digital transducers
d) Pulse transducers
Ans : (b)

16. Piezo – electric transducers work when we apply ________ to it.

a) Mechanical force
b) Vibrations
c) Illuminations
d) Heat
Ans : (a)

17. Piezo electric crystal can produce an emf

a) When external mechanical force is applied to i
b) When radiant energy stimulates the crystal
c) When external magnetic field is applied
d) When the junction of two such crystals are heated
Ans : (a)

18. The draw backs of strain gauges are

S1: Low fatigue life
S2: They are expensive, brittle and sensitive to temperature
S3: Poor linearity
Choose the correct one
a) S1 and S2
b) S2 and S3
c) S1 and S3
d) S1 only
Ans : (b)
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19. LVDT windings are wound on
a) Steel sheets
b) Aluminium
c) Ferrite
d) Copper
Ans : (c)

20. The size of air cored transducers in comparison to the iron core parts is
a) Smaller
b) Larger
c) Same
d) Unpredictable
Ans : (b)

21. The principle of operation of LVDT is based on the variation of

a) Self inductance
b) Mutual inductance
c) Reluctance
d) Permanence
Ans : (b)

22. LVDT is an/a _______ transducer

a) Magneto-strict ion
b) Inductive
c) Resistive
d) Eddy current
Ans : (b)

23. Which of the following can be measured with the help of piezo electric crystal?
a) Force
b) Velocity
c) Sound
d) Pressure
Ans : (a)

24. S1: Transducer is a device which converts physical into electrical quantityS2: Transducer is
also called as sensor
a) S1 is true & S2 is false
b) S2 is true & S1 is false
c) Both S1 & S2 are true
d) Both S1 & S2 are false
Ans (b)

27. In a LVDT, the two secondary voltage

a) Are independent of the core position
b) Vary unequally depending on the core position
c) Vary equally depending on the core position
d) Are always in phase quadrature
Ans : (b)
Page 7 of 40
28. Capacitive transducers are normally employed for_________ measurements
a) Static
b) Dynamic
c) Transient
d) Both static and dynamic
Ans : (b)

29. Match the following

1. EEG A. Diagnostic tool for heart alignment
2. ECG B. Diagnostic tool for brain alignment
3. Sphygmo-manometer C. Instrument used for measuring blood pressure
4. Stethoscope D. instrument used to hear pulse/heart beat
Choose the correct one
a) 1- B, 2 – A, 3 – C, 4 – D
b) 1 – B, 2 – A, 3 – D, 4 – C
c) 1- C, 2 – A, 3 – B, 4 – D
d) 1 – A, 2 – B, 3 – C, 4 – D
Ans : (a)

30. Pick the correct statement regarding functions of a transduce

S1: Sense the magnitude, change in & / or frequency of same measurand
S2: To provide electrical output that furnishes accurate, quantitative data about the measurand
a) S1 is true & S2 is false
b) S2 is true & S1 is false
c) Both S1 & S2 are true
d) Both S1 & S2 are false
Ans : (c)

31. The transducers which requires an external power and their output is a measure of some
variation such as resistance, inductance, capacitance etc., are called as
a) Active transducer
b) Primary sensor
c) Passive transducer
d) Self generating transducer
Ans : (c)

32. The principle of operation of variable resistance transducer is

a) Deformation leads to change in resistance
b) Displacement of a contact slider on a resistance
c) Coupling of two coils changes with displacement
d) Movement of magnetic field produces variation in resistance of material
Ans : (b)

33. The application of LVDT is

a) Joint motion
b) Finger movement
c) Limb movement
d) Heart wall motion
Ans : (c)
Page 8 of 40
34. Venturi is associated with
a) Venous blood pressure
b) Digital plethysmography
c) Dialysate flow in artificial kidney
d) Blood flow in heart lung machine
Ans : (d)

35. Pressure transducer for measuring blood pressure is

a) Strain gauge transducer only
b) Strain gauge or capacitive transducer
c) Resistive transducer
d) Fiber optic transducer
Ans : (b)

36. The change in resistance of a metal wire owing to strain is due to

S1: Change in dimension of wire expressed by factor (1-2µ)
S2: Change in resistance ?
a) S1 is true & S2 is false
b) S2 is true & S1 is false
c) Both S1 & S2 are true
d) Both S1 & S2 are false
Ans : (b)

37. In foil strain gauge the thickness of foil varies from

a) 2.5 micron to 6 micron
b) 25 micron (or) less
c) 25 micron to 60 micron
d) 2.5 micron to 5 micron
Ans : (a)

38. Photo conductive cell consists of a thin film of

a) Quartz
b) Lithium sulphate
c) Barium titanate
d) Selenium
Ans : (d)

39. S1: In multimode fiber optics, intensity modulating schemes can be employed.
S2: Schemes using polarizing techniques need birefringent fiber.
a) S1 is true and S2 is false
b) Both S1 and S2 are true
c) S1 is false and S2 is true
d) Both S1 and S2 are false
ans (b)

40. Test electrode is also known as

a) Indicator electrode
b) Reference electrode
c) Second electrode
d) Primary electrode
Ans : (a)
Page 9 of 40
41. Most commonly used indicator electrode is
a) Calomel electrode
b) Silver electrode
c) Silver – Silver chloride electrode
d) Glass electrode
Ans : (d)

42. _________ is the example of photo emissive cell.

a) LDR
b) Photo diode
c) Photo transistor
d) Photo multiplier
Ans : (a)

43. pH value of venous blood is

a) 7.30
b) 7.40
c) 7.35
d) 7.45
Ans : (c)

44. Silver chloride electrode is used as a reference electrode due to its

a) Large half cell potential
b) Stable half cell potential
c) Stable resting potential
d) Stable action potential
Ans : (b)

45. The capacitance microphone is used for the detection of

a) Heart rate
b) Blood flow
c) Heart sound
d) Foot pressure
Ans : (c)

46. In a graded index fiber, the total reflected light takes a _________
a) Straight line path
b) Parabolic path
c) Elliptical path
d) Circular path
Ans (b)

47. ________ fiber is used in interferometric instruments.

a) Monomode
b) Multimode
c) Birefringent
d) Coated
Ans (a)

Page 10 of 40
48. Fiber optic sensor can be used to sense _________
a) Displacement
b) Power
c) Current
d) Resistance
Ans (a)

49. Photo multiplier consists of

a) 1 Photo emissive cathode & 2 dynodes
b) 2 Photo emissive cathodes & 2 dynodes
c) 2 Photo emissive cathodes & 1 dynode
d) 1 Photo emissive cathode & 1 dynode
Ans : (a)

Verified By Re-Verified By Approved By

Prepared By
Mr. Lavhate V. J. Mr. Patil S. S. Mr. Mandale R.K.
Mr. Mandale R. K.
Module Coordinator Academic Coordinator HoD EE

Page 11 of 40
 ZEAL EDUCATION SOCIETY’S

ZEAL POLYTECHNIC,PUNE
NARHE │PUNE -41 │ INDIA
DEPARTMENT OF ELECTRICAL ENGINEERING

02 – Pressure Measurement Marks:-14

Content of Chapter:-
2.1 Pressure and its units, Types- Absolute, Gauge, Atmospheric, Vacuum.
2.2 Classification of Pressure measuring devices:
a. Manometer-U Tube. Inclined Tube. Well type manometer
b. Elastic pressure transducer: Bourdon Tube Bellows, Diaphragm. Capsule.
c. Electrical pressure transducers:
Bourdon tube with I, VDT. Bellow with LVDT Diaphragm with Strain Gauge.
2.3 Specification of electrical pressure transducer.
2.4 Calibration of pressure gauge using dead weight tester.

Q1. If the displacement is measured with strain gauge then the number of strain gauge normally
required are
A. One
B. Two
C. Three
D. Four
ANSWER: D. Four

Q2. A capacitive pressure sensor has a typical measurement uncertainty of

A. ± 0.2%
B. ± 0.4%
C. ± 0.1%
D. ± 0.8%

Q3. The instrument used for the measurement of pressure is/are

A. Bellows
B. Diaphragms
C. Fiber optic pressure sensors
D. All of these
ANSWER: D. All of these

Q4. Bourdon tube is used for the measurement of gauge pressure of

A. Gas
B. Liquid fluid
C. Solid
D. Both (a) and (b)
ANSWER: D. Both (a) and (b)

Page 12 of 40
Q5. Dead weight gauge is used for the measurement of pressure of
A. About 1000 bar
B. About 2000 bar
C. About 5000 bar
D. About 7000 bar
ANSWER: D. About 7000 bar

Q6. The ionization gauge an instrument used for the measurement of

A. Very low pressure
B. Medium pressure
C. High pressure
D. Very high pressure
ANSWER: A. Very low pressure

Q7. When visual indication of pressure level is required then the instrument generally used is
A. Monometers
B. Diaphragm sensors
C. Bourdon tube
D. Resonant wire device

Q8. For the measurement of high pressure with high accuracy the device used is
A. Manganin wire pressure
B. Ionization gauge
C. Dead weight gauge
D. Bourdon tubes
ANSWER: A. Manganin wire pressure

Q9. Advantage of passive instrument is

A. It does not need power supply
B. Cheap
C. Sensitive
D. Accurate
ANSWER: A. It does not need power supply

Q10. In McLeod gauge,

A. High pressure fluid is expanded to a low pressure which is read by the monometer technique
B. Low pressure fluid is compressed to a high pressure which is read by the bourdon technique
C. High pressure fluid is expanded to a low pressure which is read by the bourdon technique
D. Low pressure fluid is compressed to a high pressure which is read by the monometer technique
ANSWER: D. Low pressure fluid is compressed to a high pressure which is read by the monometer
technique

Q11. To increase the current sensitivity below 10 mV, electronic instrument uses
A. Amplifiers
B. Modulator
C. Transducer
D. Oscillator
ANSWER: A. Amplifiers

Page 13 of 40
Q12. Electronic voltmeters can be designed to measure
A. Only very small voltages
B. Only very high voltages
C. Both very small and very high voltages
D. None of these
ANSWER: C. Both very small and very high voltages

Q13. An rms reading voltmeter can accurately measure voltages of

A. Sine waveforms
B. Square waveforms
C. Saw tooth waveforms
D. All of these
ANSWER: D. All of these

Q14. In electronic voltmeter, the range of input voltages can be extended by using
A. Functional switch
B. Input attenuator
C. Rectifier
D. Balanced bridge dc amplifier
ANSWER: B. Input attenuator

Q15. The measurement range of digital voltmeter is

A. 1V to 1MV
B. 1V to 1kV
C. 1kV to 1MV
D. 100 kV to 100MV
ANSWER: A. 1V to 1MV

Q16. Which among the following is not the type of digital voltmeters?
A. Ramp type
B. Integrating
C. Potentiometric type
D. None of these
ANSWER: D. None of these

Q17. In a ramp type DVM, the multivibrator determines the rate at which the
A. Clock pulses are generated
B. Measurement cycles are initiated
C. It oscillates
D. Its amplitude varies
ANSWER: B. Measurement cycles are initiated

Q18. In potentiometric type DVM, the adjustment of sliding contact is done by

A. A single phase servomotor
B. Two phase servomotor
C. Three phase servomotor
D. All of these
ANSWER: B. Two phase servomotor
Page 14 of 40
Q19. In the beginning, all the outputs of the successive approximation type register is at
A. Logic zero
B. Logic one
C. Toggling
D. None of these
ANSWER: A. Logic zero

Q20. Q meter is used to measure the properties of

A. Inductive coils
B. Non inductive coils
C. Capacitive coils
D. Both (a) and (c)
ANSWER: D. Both (a) and (c)

Q21. The different types of analog recorders are

A. Graphic recorders
B. Oscillographic recorders
C. Magnetic tape recorders
D. All of these

Q22 . X-Y recorders is the type of

A. Graphic recorders
B. Oscillographic recorders
C. Magnetic tape recorders
D. Digital recorders

Q23. The measurements which can be simplifies by using X-Y recorders is /are
A. Speed-torque characteristics of motors
B. Regulation curves of power supplies
C. Hysteresis curves
D. All of these
ANSWER: D. All of these

Q24. Depending on whether the display is a numeric or alphanumeric, the segmental displays is
A. 7 segmental
B. 14 segmental
C. 21 segmental
D. Either (a) or (b)
ANSWER: D. Either (a) or (b)

Q25. In light emitting diode, the available light emitting region is

A. Less than 2.5 mm
B. From 2.5 to 25 mm
C. Greater than 25 mm
D. Greater than 50 mm
ANSWER: B. From 2.5 to 25 mm

Page 15 of 40
Q26. In liquid crystal displays, the liquid crystal exhibits properties of
A. Liquid
B. Solids
C. Gases
D. Both (a) and (b)
ANSWER: D. Both (a) and (b)

Q27. A liquid crystal display requires

A. An ac drive
B. A dc drive
C. Both ac and dc drive
D. None of these
ANSWER: A. An ac drive

Q28. The full range of audibility in audio frequency oscillator is

A. 0 to 20 Hz
B. 20 Hz to 2 kHz
C. 20 Hz to 20 kHz
D. 20 Hz to 20 MHz
ANSWER: C. 20 Hz to 20 kHz

Q29. The basic difference between square wave and pulse generator is their
A. Waveforms shape
B. Duty cycles
C. Frequency range
D. Cost
ANSWER: B. Duty cycles

Q30. In function generator, the output waveform of integrator is

A. Sinusoidal
B. Square
C. Triangular
D. Saw-tooth
ANSWER: C. Triangular

Q31. Instruments are subdivided into active and passive based on whether the output of instrument
is produced by the quantity being measured simply changes the magnitude of some external power
source. The pressure measuring device and the float-type petrol tank level indicator are example of
A. Active instruments
B. Passive instruments
c. Former is active instrument and later is passive instrument
D. Former is passive instrument and later is active instrument
ANSWER: D. Former is passive instrument and later is active instrument

Q32. Considering cost of instruments, which is a better choice, active or passive?

A. Active instruments
B. Passive instruments
C. Cost of both active and passive instruments are approximately same

Page 16 of 40
D. None of these
ANSWER: B. Passive instruments

Q33. In deadweight gauge, weights are added on the top of piston until the piston reaches a datum
level. The datum level is known as
A. Null point, where the downward force balances the fluid pressure
B. Lowest point of the container
C. Highest level of fluid in the container
D. None of these
ANSWER: A. Null point, where the downward force balances the fluid pressure

Q34. The accuracy of the deflection type instruments and of the null type instruments depends on
A. Linearity, calibration of spring
B. Calibration of spring, linearity and calibration of weights
C. Linearity and calibration of spring, calibration of weights
D. Both depends on calibration of weight
ANSWER: C. Linearity and calibration of spring, calibration of weights

Q35. In terms of usage, deflection type instruments are

A. More convenient than null type instrument
B. Less convenient than null type instruments
C. Both are equally convenient
D. None of these
ANSWER: A. More convenient than null type instrument

Q36. The output of an analogue instrument varies

A. Continuously and can have an infinite number of values within its range of instruments
B. In discrete steps and can have an infinite number of values within its range of instruments
C. Continuously and can have an finite number of values within its range of instruments
D. In discrete steps and can have an infinite number of values within its range of instruments
ANSWER: A. Continuously and can have an infinite number of values within its range of
instruments

Q37. The microcomputer performs its computations in

A. Analogue form
B. Digital form
C. Either analogue form or digital form depending on their applications
D. None of these
ANSWER: B. Digital form

Q38. To read and record a measurement, the indicating type instrument

A. Always requires human intervention
B. Does not requires human intervention
C. Requires human intervention only when the instrument consists of a rotating pointer moving against a
scale
D. Requires human intervention only when the instrument consists of a rotating scale moving against a
pointer
ANSWER: A. Always requires human intervention
Page 17 of 40
Q39. Accuracy of an measuring instrument indicates the
A. Closeness of the output reading to the true value
B. Ratio of output value to the input value
C. Change in output with each change in input
D. Degree of freedom from random errors
ANSWER: A. Closeness of the output reading to the true value

Q40. If a pressure gauge of range 0-10 bar has a quoted inaccuracy of ±1.0 % of full scale reading,
then it means
A. Minimum expected error in any reading is 0.1 bar
B. Maximum expected error in any reading is 0.1 bar
C. Maximum expected error in any reading is 1 bar
D. Minimum expected error in any reading is 1 bar
ANSWER: B. Maximum expected error in any reading is 0.1 bar

Verified By Re-Verified By Approved By

Prepared By
Mr. Lavhate V. J. Mr. Patil S. S. Mr. Mandale R.K.
Mr. Mandale R. K.
Module Coordinator Academic Coordinator HoD EE

Page 18 of 40
 ZEAL EDUCATION SOCIETY’S

ZEAL POLYTECHNIC,PUNE
NARHE │PUNE -41 │ INDIA
DEPARTMENT OF ELECTRICAL ENGINEERING

03– Flow Measurement Marks:-16

Content of Chapter:-
3.1 Flow and its units, Types of flow Laminar, turbulent, Reynolds number.
3.2 Classification of flow measuring transducers:
a. Variable head flow meter: venture meter orifice plate meter, flow nozzle,
pilot tube
b. Variable area flow meter: Rota meter
c. Electrical flow meter: Turbine flow meter, Electromagnetic Flow meter,
Ultrasonic flow Meter- Time difference and Doppler Type, Hot wire
Anemometer. Vortex flow meter.
3.3 Positive displacement meter-notating disc type.
3.4 Typical specifications of various flow meters.

Q1. The rate at which fluid flows through a closed pipe can be determined by
A. Determining the mass flow rate
B. Determining the volume flow rate
C. Either (a) or (b)
D. None of these
ANSWER: C. Either (a) or (b)

Q2. Conveyor-based methods is used for the measurement of the flow of

A. Solids
B. Liquid
C. Gas
D. All of these
ANSWER: A. Solids

Q3. For the measurement of flow rate of liquid, the method used is
A. Conveyor-based methods
B. Bourdon tube
C. Coriolis method
D. Thermal mass flow measurement
ANSWER: C. Coriolis method

Q4. The devices used for flow obstruction is/are

A. Orifice plate
B. Venturi tube
C. Flow nozzle and dall flow tube
D. All of these
ANSWER: D. All of these

Page 19 of 40
Q5. The device which is used for making temporary measurements of flow is
A. Venturi
B. Dull flow tube
C. Orifice plate
D. Pitot static tube
ANSWER: C. Orifice plate

Q6. For the measurement of flow the cheapest device is

A. Venturi
B. Dall flow tube
C. Flow nozzle
D. Pitot static tube

Q7. The instrument which is not suitable for the application in automatic control scheme
A. Rotameters
B. Pitot static tube
C. Rotary piston meter
D. Orifice plate
ANSWER: A. Rotameters

Q8. Example for positive displacement meter is

A. Variable area flow meter
B. Turbine meters
C. Rotary piston meter
D. Venturi

ANSWER: C. Rotary piston meter

Q9. Turbine meters are generally preferred for

A. Low-viscosity and high flow measurements
B. High viscosity and low flow measurements
C. High viscosity and high flow measurements
D. Low viscosity and low flow measurements
ANSWER: A. Low-viscosity and high flow measurements

Q10. The flow meter which is replacing the differential pressure meters in its applications is
A. Vortex-shedding flow meter
B. Electromagnetic flow meters
C. Ultrasonic flow meters
D. All of these
ANSWER: A. Vortex-shedding flow meter

Q11. Dipsticks are used for the

A. Pressure measurement
B. Flow measurement
C. Displacement measurement
D. Level measurement

Page 20 of 40
Q12. The most common application of float system is
A. To monitor the fuel tank level in motor vehicle
B. To monitor the flow of solid
C. To monitor the flow of liquid
D. All of these
ANSWER: A. To monitor the fuel tank level in motor vehicle

Q13. Capacitive devices are used for the level measurement of

A. Only liquid
B. Solid in powdered form
C. Both (a) and (b)
D. None of these
ANSWER: C. Both (a) and (b)

Q14. In ultrasonic level gauge, the ultrasonic source is placed at the

A. Bottom of the vessel containing the liquid
B. Top of the vessel containing the liquid
C. Middle of the vessel containing the liquid
D. Far from the vessel containing the liquid
ANSWER: A. Bottom of the vessel containing the liquid

Q15. If the ambient temperature is doubled and pressure fluctuates, then the transmission time of
radar through air is
A. Almost unaffected and remains same
B. Increases
C. Decreases
D. None of these
ANSWER: A. Almost unaffected and remains same

Q16. In radiation methods, the detector system is located at

A. The top of the liquid filled tank
B. The bottom of liquid filled tank
C. Middle of the liquid filled tank
D. Outside a liquid filled tank
ANSWER: D. Outside a liquid filled tank

Q17. A vibrating level sensors consists of

A. One piezoelectric oscillators
B. Two piezoelectric oscillators
C. Three piezoelectric oscillators
D. Four piezoelectric oscillators
ANSWER: B. Two piezoelectric oscillators

Q18. Contact devices used for the measurement of level are

A. Less reliable then devices which does not make contact with the material
B. More reliable then devices which does not make contact with the material
C. Less reliable then devices which makes contact with the material
D. More reliable then devices which makes contact with the material
ANSWER: A. Less reliable then devices which does not make contact with the material
Page 21 of 40
Q19. Instrument which is capable of discriminating temperature differences of even 0.1 degree
Celsius is
A. Fibre-optic level sensors
B. Laser method
C. Thermography
D. Vibrating level sensors
ANSWER: C. Thermography

Q20. In fibre-optic level sensors, the amount of light loss depends on

A. The proportion of cable that is submerged in the liquid
B. Amount of light which is reflected back
C. The proportion of cable that is not in the liquid
D. Amount of light which is not reflected back
ANSWER: A. The proportion of cable that is submerged in the liquid

Q21. To increase the current sensitivity below 10 mV, electronic instrument uses
A. Amplifiers
B. Modulator
C. Transducer
D. Oscillator
ANSWER: A. Amplifiers

Q22. Electronic voltmeters can be designed to measure

A. Only very small voltages
B. Only very high voltages
C. Both very small and very high voltages
D. None of these
ANSWER: C. Both very small and very high voltages

Q23. An rms reading voltmeter can accurately measure voltages of

A. Sine waveforms
B. Square waveforms
C. Saw tooth waveforms
D. All of these
ANSWER: D. All of these

Q24. In electronic voltmeter, the range of input voltages can be extended by using
A. Functional switch
B. Input attenuator
C. Rectifier
D. Balanced bridge dc amplifier
ANSWER: B. Input attenuator

Q25. The measurement range of digital voltmeter is

A. 1V to 1MV
B. 1V to 1kV
C. 1kV to 1MV
D. 100 kV to 100MV
ANSWER: A. 1V to 1MV

Page 22 of 40
Q26. Which among the following is not the type of digital voltmeters?
A. Ramp type
B. Integrating
C. Potentiometric type
D. None of these
ANSWER: D. None of these

Q27. In a ramp type DVM, the multivibrator determines the rate at which the
A. Clock pulses are generated
B. Measurement cycles are initiated
C. It oscillates
D. Its amplitude varies
ANSWER: B. Measurement cycles are initiated

Q28. In potentiometric type DVM, the adjustment of sliding contact is done by

A. A single phase servomotor
B. Two phase servomotor
C. Three phase servomotor
D. All of these
ANSWER: B. Two phase servomotor

Q29. In the beginning, all the outputs of the successive approximation type register is at
A. Logic zero
B. Logic one
C. Toggling
D. None of these
ANSWER: A. Logic zero

Q30. Q meter is used to measure the properties of

A. Inductive coils
B. Non inductive coils
C. Capacitive coils
D. Both (a) and (c)
ANSWER: D. Both (a) and (c)

Q31. The different types of analog recorders are

A. Graphic recorders
B. Oscillographic recorders
C. Magnetic tape recorders
D. All of these

Q32. X-Y recorders is the type of

A. Graphic recorders
B. Oscillographic recorders
C. Magnetic tape recorders
D. Digital recorders
ANSWER: A. Graphic recorders
Page 23 of 40
Q33. The measurements which can be simplifies by using X-Y recorders is /are
A. Speed-torque characteristics of motors
B. Regulation curves of power supplies
C. Hysteresis curves
D. All of these
ANSWER: D. All of these

Q34. Depending on whether the display is a numeric or alphanumeric, the segmental displays is
A. 7 segmental
B. 14 segmental
C. 21 segmental
D. Either (a) or (b)
ANSWER: D. Either (a) or (b)

Q35. In light emitting diode, the available light emitting region is

A. Less than 2.5 mm
B. From 2.5 to 25 mm
C. Greater than 25 mm
D. Greater than 50 mm
ANSWER: B. From 2.5 to 25 mm

Q36. In liquid crystal displays, the liquid crystal exhibits properties of

A. Liquid
B. Solids
C. Gases
D. Both (a) and (b)
ANSWER: D. Both (a) and (b)

Q37. A liquid crystal display requires

A. An ac drive
B. A dc drive
C. Both ac and dc drive
D. None of these
ANSWER: A. An ac drive

Q38. The full range of audibility in audio frequency oscillator is

A. 0 to 20 Hz
B. 20 Hz to 2 kHz
C. 20 Hz to 20 kHz
D. 20 Hz to 20 MHz
ANSWER: C. 20 Hz to 20 kHz

Page 24 of 40
Q39. The basic difference between square wave and pulse generator is their
A. Waveforms shape
B. Duty cycles
C. Frequency range
D. Cost
ANSWER: B. Duty cycles

Q40. In function generator, the output waveform of integrator is

A. Sinusoidal
B. Square
C. Triangular
D. Saw-tooth
ANSWER: C. Triangular

Verified By Re-Verified By Approved By

Prepared By
Mr. Lavhate V. J. Mr. Patil S. S. Mr. Mandale R.K.
Mr. Mandale R. K.
Module Coordinator Academic Coordinator HoD EE

Page 25 of 40
 ZEAL EDUCATION SOCIETY’S

ZEAL POLYTECHNIC,PUNE
NARHE │PUNE -41 │ INDIA
DEPARTMENT OF ELECTRICAL ENGINEERING

04– Level Measurement Marks:-14

Content of Chapter:-
4.1 Level and its units, Classification of level measurement methods:
a. Direct methods- Hook type, Sight glass, Hydrostatic type (air purge).
b. Indirect measurement method: Float type with linear and rotary
potentiometer, Capacitive type Ultrasonic type, Nuclear Radiation type,
Radar type.
4.2 Typical specifications of electrical level measurement methods.
4.3 Calibration of Air purge and Capacitance type level system.

1. Suppose a storage vessel holds a liquid of unpredictable density. Identify which level measurement
technology will not maintain accurate measurement of liquid height in the vessel as the liquid density
changes:
(A) Differential pressure transmitter
(B) Guided-wave radar
(C) Ultrasonic
(D) Float and tape
(E) Sightglass
Answer : A

2.The main advantage of a “dip tube” or “bubbler” system for level measurement is that:
(A) It isolates the pressure transmitter from the process fluid
(B) It always elevates and never suppresses the calibration range
(C) It is less expensive to operate than a direct-connected transmitter
(D) It compensates for changes in liquid density
(E) It can measure both solid and liquid levels
Answer : A

3. A displacer-type level transmitter has a cylindrical displacer 30 inches long and 2.5 inches in diameter.
When fully submerged in a petroleum fuel (Gf = 0.82), how much buoyant force will the displacer generate?
(A) 5.320 pounds
(B) 6.488 pounds
(C) 4.363 pounds
(D) 17.45 pounds
(E) 2.792 pounds
Answer : C

Page 26 of 40
4. If the specific gravity of the liquid inside the vessel increases, what aspects of the transmitter’s calibration
will we need to change in order to maintain accurate liquid level measurement?

(A) We will need to change the transmitter’s LRV and linearity

(B) We will need to change the transmitter’s linearity and span
(C) We will need to change the transmitter’s LRV and URV
(D) We will need to change the transmitter’s linearity and zero
(E) We will need to change the transmitter from linear to square-root characterization, and adjust the zero
Answer : C

5.Calculate the LRV and URV for this ΔP-based liquid level measurement system

Calculate LRV and UR

(A) LRV = 0” H2O ; URV = 444” H2O

(B) LRV = 84” H2O ; URV = 444” H2O
(C) LRV = 7” H2O ; URV = 37” H2O
(D) LRV = 444” H2O ; URV = 0” H2O
(E) LRV = 0” H2O ; URV = 360” H2O
Page 27 of 40
6.A d/p cell used to measure liquid level has a “suppressed zero.” This means:
(A) The transmitter is located above the 0% liquid level mark
(B) The transmitter uses filter circuits to suppress noise to a zero level
(C) The liquid is less dense than water
(D) The transmitter is located below the 0% liquid level mark
(E) The elevation of the vessel is below sea level
Answer : D

7.Which of the following level-measurement technologies cannot be adapted to measure solid (powder) level
in a vessel?
(A) Displacer
(B) Float and tape
(C) Radar
(D) Ultrasonic
(E) Load cell
Answer : A

8.A guided-wave radar transmitter is able to measure liquid interface levels based on differences of between
the two liquids.
(A) Ionization potential
(B) Density
(C) Speed of light
(D) Temperature
(E) Dielectric constant
Answer : E

9.The following liquid level switch will only function with liquids that are .
liquid level switch

(A) Electrically conductive

(B) Denser than water
(C) Absolutely pure (i.e. not a solution)
(D) In a state of laminar flow
(E) Optically transparent
Page 28 of 40
10 Contact devices used for the measurement of level are
a. Less reliable then devices which does not make contact with the material
b. More reliable then devices which does not make contact with the material
c. Less reliable then devices which makes contact with the material
d. More reliable then devices which makes contact with the material

11 In fibre - optic level sensors, the amount of light loss depends on

a. The proportion of cable that is submerged in the liquid
b. Amount of light which is reflected back
c. The proportion of cable that is not in the liquid
d. Amount of light which is not reflected back

12 Instrument which is capable of discriminating temperature differences of even 0.1 degree

Celsius is
a. Fibre - optic level sensors
b. Laser method
c. Thermography
d. Vibrating level sensors

13 A vibrating level sensors consist of

a. One piezoelectric oscillators
b. Two piezoelectric oscillators
c. Three piezoelectric oscillators
d. Four piezoelectric oscillators

14. Which of the following conversions take place in float element?

a) Level to force
b) Level to voltage
c) Level to displacement
d) None of the mentioned
Answer: c
Explanation: Float elements are used for measuring the liquid level of a system. Liquid level indication is
obtained using displacement of float element.

15. In ______________ system, float whose weight greater than liquid to be displaced is used.
a) Inverse float system
b) Displacer system
c) Magnifying float system
d) None of the mentioned
Answer: b
Explanation: Displacer systems are in which weight of float will be greater than the weight of liquid to be
displaced.

16. For float element, uniformity of density is important.

a) True
b) False
Answer: b
Explanation: While using the float element, liquid of uniform density distribution is not required. But in the
displacer system, liquid with constant density distribution is important.
Page 29 of 40
17. Which of the following represents pressure of a liquid column with constant density?
a) ϱgh
b) ϱh
c) ϱg
d) None of the mentioned
Answer: a
Explanation: In a liquid column with constant density ‘ϱ’, pressure can be represented as a product of
density, acceleration due to gravity and height of the liquid column.
18. Which of the following is correct for a level to force conversions?
a) Liquid at constant density distribution
b) Liquid with different density distribution
c) Level difference should be gradual
d) Liquid should be highly viscous

19. Which of the following devices are used for a level to force conversion?
a) Load cell
b) Membrane
c) Diaphragm
d) Voltmeter
Answer: a
Explanation: Load cells are force measuring devices, and they are used for a level to force conversion.
20. Diaphragm element is used for a level to pressure conversion.
a) True
b) False
Answer: a
Explanation: Diaphragm elements are used for measuring pressure and they are used for a level to
pressure conversion.

21. In closed container type level measuring system, pressure at top of container is due to
______________
a) Vacuum pressure
b) Vapor pressure
c) Liquid pressure
d) Atmospheric pressure
Answer: b
Explanation: Pressure at top of the container in a closed container system is the pressure above liquid level
which is the pressure of vapor.
22. What will happen if the float becomes lighter?
a) Density variations becomes more important
b) Density variations becomes less important
c) System becomes less efficient
d) None of the mentioned

Answer: b
Explanation: When float made lighter, errors due to density variation decreases.

Page 30 of 40
23. Which of the following represents correct relation for pressure in manometer type level
measuring system?
a) (ϱmhm – ϱy)g
b) (ϱm – ϱy)g
c) (ϱmhm – ϱ)g
d) ϱmhm – ϱy
Answer: a

24.Which of the following conversions take place in float element?

a) Level to force
b) Level to voltage
c) Level to displacement
d) None of the mentioned
Answer: c
Explanation: Float elements are used for measuring the liquid level of a system. Liquid level indication is
obtained using displacement of float element.

25.In ______________ system, float whose weight greater than liquid to be displaced is used.
a) Inverse float system
b) Displacer system
c) Magnifying float system
d) None of the mentioned
Answer: b
Explanation: Displacer systems are in which weight of float will be greater than the weight of liquid to be
displaced.

26.For float element, uniformity of density is important.

a) True
b) False
Answer: b
Explanation: While using the float element, liquid of uniform density distribution is not required. But in the
displacer system, liquid with constant density distribution is important

27.Which of the following represents pressure of a liquid column with constant density?
a) ϱgh
b) ϱh
c) ϱg
d) None of the mentioned
Answer: a
Explanation: In a liquid column with constant density ‘ϱ’, pressure can be represented as a product of
density, acceleration due to gravity and height of the liquid column.

28.Which of the following is correct for a level to force conversions?

a) Liquid at constant density distribution
b) Liquid with different density distribution
c) Level difference should be gradual
d) Liquid should be highly viscous

Page 31 of 40
Answer: a
Explanation: Liquid used for a level to force conversion should have constant density distribution at all
points, it enables consistent measurement of force.

29.Which of the following devices are used for a level to force conversion?
a) Load cell
b) Membrane
c) Diaphragm
d) Voltmeter
Answer: a
Explanation: Load cells are force measuring devices, and they are used for a level to force conversion.

30.Diaphragm element is used for a level to pressure conversion.

a) True
b) False
Answer: a
Explanation: Diaphragm elements are used for measuring pressure and they are used for a level to
pressure conversion.

31.In closed container type level measuring system, pressure at top of container is due to
______________
a) Vacuum pressure
b) Vapor pressure
c) Liquid pressure
d) Atmospheric pressure
Answer: b
Explanation: Pressure at top of the container in a closed container system is the pressure above liquid level
which is the pressure of vapor.

32.What will happen if the float becomes lighter?

a) Density variations becomes more important
b) Density variations becomes less important
c) System becomes less efficient
d) None of the mentioned
Answer: b
Explanation: When float made lighter, errors due to density variation decreases.

33.Which of the following represents correct relation for pressure in manometer type level
measuring system?
a) (ϱmhm – ϱy)g
b) (ϱm – ϱy)g
c) (ϱmhm – ϱ)g
d) ϱmhm – ϱy
Answer: a
Explanation: (ϱmhm – ϱy)g represents pressure difference in a manometer system for measuring level
measuring, where ϱm is the density of manometric liquid and hm is the level of manometric liquid.

Page 32 of 40
 Verified By Re-Verified By Approved By
Prepared By
Mr. Lavhate V. J. Mr. Patil S. S. Mr. Mandale R.K.
Mr. Mandale R. K.
Module Coordinator Academic Coordinator HoD EE

Page 33 of 40
 ZEAL EDUCATION SOCIETY’S

ZEAL POLYTECHNIC,PUNE
NARHE │PUNE -41 │ INDIA
DEPARTMENT OF ELECTRICAL ENGINEERING

05– Temperature Measurements Marks:-14

5.1 Temperature and its Units, temperature scales and conversions.
5.2 Classification of temperature measuring transducers:
a. Filled system thermometer- vapour pressure thermometer.
b. Expansion thermometer- Bimetallic thermometer.
5.3 Electrical methods-
a. Thermistors,
b. RTD- (PT-100, 2/3 wire)
c. Thermocouple- Law of intermediate metals Seebeck and Peltier effect,
Types J, K, R, S, T
5.4 Pyrometer—Optical method, Radiation method.
5.5 Typical specifications of Thermistor, RTD and Thermocouple.
5.6 Calibration of temperature measuring transducers.

1. Output of a bimetallic element will be __________________

a) Strain
b) Pressure
c) Displacement
d) Voltage
Answer: c
Explanation: Bimetallic element is used for measuring temperature, it produces proportional output
displacement for input temperature.

2. Which of the following can be used for measuring temperature?

a) Metallic diaphragm
b) Fluid expansion system
c) Capsule
d) Bourdon tube
Answer: b
Explanation: Fluid expansion system is a method for measuring temperature, in which expansion of
liquid is measured with temperature.

3. IPTS stands for ________________

a) International Practical Temperature Scale
b) Indian Primary Temperature Scale
c) International Primary Temperature Scale
d) International Practical Temperature Standard
Answer: a
Explanation: IPTS is the short form of name International Standard Temperature Scale.

4. In liquid in steel bulb thermometer, which liquid can be used for measuring temperature up to
60000C?
a) Mercury
b) Ether
Page 34 of 40
c) Water
d) None of the mentioned
Answer: a
Explanation: Mercury as a liquid provides temperature range of -4000C to 65000C.
5. Which of the following is used as indication instrument in a liquid expansion system?
a) Bellows
b) Bourdon tube
c) Ammeter
d) Thermometer
Answer: b
Explanation: Bourdon tube converts pressure into displacement and in liquid expansion systems output
expansion pressure is applied to bourdon tube for indication.
6. Which of the following is true for bimetallic type thermometer?
a) Two metals have same temperature coefficients
b) Two metals have different temperature coefficient
c) One metal is cooled always
d) None of the mentioned
Answer: b
Explanation: In a bimetallic type thermometer, two metals are used which are different in temperature
coefficients.
7. When bimetallic thermometer heated, curling occurs to the side of metal with least temperature
coefficients.
a) True
b) False
Answer: a
Explanation: A bimetallic type thermometer, when heated curls to the side of metal with least temperature
coefficient. Number of curls will be proportional to temperature applied.
8. Analogous quantities of heat flow and temperature in electrical are _____________ and
_______________
a) Potential and current
b) Current and potential
c) Power and potential
d) Current and power
Answer: b
Explanation: Heat flow in the thermal system is analogous to current flow in electrical, and temperature
between two points is analogous to potential between two points in electrical.
9. Ratio of net amount of heat received and stored in the body for certain time interval is known as
_________________
a) Temperature
b) Thermal coefficient
c) Thermal storage capacity
d) None of the mentioned
Answer: c
Explanation: Thermal storage capacity denoted by C is the ratio of the Net amount of heat received and
stored in the body.

Page 35 of 40
10. Heat transfer coefficient of a material with length l is _________
a) K/l
b) l/K
c) 1/K
d) Kl

Answer: a
Explanation: Heat transfer coefficient of a material is the ratio of K and l, where K is the thermal conductivity
of material and l is the length of the heat transfer path.
11.Output of a bimetallic element will be __________________
a) Strain
b) Pressure
c) Displacement
d) Voltage
Answer: c
Explanation: Bimetallic element is used for measuring temperature, it produces proportional output
displacement for input temperature

12.Which of the following can be used for measuring temperature?

a) Metallic diaphragm
b) Fluid expansion system
c) Capsule
d) Bourdon tube
View Answer & Solution
Answer: b
Explanation: Fluid expansion system is a method for measuring temperature, in which expansion of liquid is
measured with temperature.

13.IPTS stands for ________________

a) International Practical Temperature Scale
b) Indian Primary Temperature Scale
c) International Primary Temperature Scale
d) International Practical Temperature Standard
Answer: a
Explanation: IPTS is the short form of name International Standard Temperature Scale.

14.In liquid in steel bulb thermometer, which liquid can be used for measuring temperature up to
60000C?
a) Mercury
b) Ether
c) Water
d) None of the mentioned
Answer: a
Explanation: Mercury as a liquid provides temperature range of -4000C to 65000C

Page 36 of 40
15.Which of the following is used as indication instrument in a liquid expansion system?
a) Bellows
b) Bourdon tube
c) Ammeter
d) Thermometer
Answer: b
Explanation: Bourdon tube converts pressure into displacement and in liquid expansion systems output
expansion pressure is applied to bourdon tube for indication.

16.Which of the following is true for bimetallic type thermometer?

a) Two metals have same temperature coefficients
b) Two metals have different temperature coefficient
c) One metal is cooled always
d) None of the mentioned
Answer: b
Explanation: In a bimetallic type thermometer, two metals are used which are different in temperature
coefficients.

17.When bimetallic thermometer heated, curling occurs to the side of metal with least temperature
coefficients.
a) True
b) False
Answer: a
Explanation: A bimetallic type thermometer, when heated curls to the side of metal with least temperature
coefficient. Number of curls will be proportional to temperature applied.

18.Analogous quantities of heat flow and temperature in electrical are _____________ and
_______________
a) Potential and current
b) Current and potential
c) Power and potential
d) Current and power
Answer: b
Explanation: Heat flow in the thermal system is analogous to current flow in electrical, and temperature
between two points is analogous to potential between two points in electrical

19.Output of a bimetallic element will be __________________

a) Strain
b) Pressure
c) Displacement
d) Voltage
Answer: c
Explanation: Bimetallic element is used for measuring temperature, it produces proportional output
displacement for input temperature

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20.Which of the following can be used for measuring temperature?
a) Metallic diaphragm
b) Fluid expansion system
c) Capsule
d) Bourdon tube
Answer: b
Explanation: Fluid expansion system is a method for measuring temperature, in which expansion of liquid is
measured with temperature.

21.IPTS stands for ________________

a) International Practical Temperature Scale
b) Indian Primary Temperature Scale
c) International Primary Temperature Scale
d) International Practical Temperature Standard
Answer: a
Explanation: IPTS is the short form of name International Standard Temperature Scale.

22.In liquid in steel bulb thermometer, which liquid can be used for measuring temperature up to
60000C?
a) Mercury
b) Ether
c) Water
d) None of the mentioned
Answer: a
Explanation: Mercury as a liquid provides temperature range of -4000C to 65000C

23.Which of the following is used as indication instrument in a liquid expansion system?

a) Bellows
b) Bourdon tube
c) Ammeter
d) Thermometer
Answer: b
Explanation: Bourdon tube converts pressure into displacement and in liquid expansion systems output
expansion pressure is applied to bourdon tube for indication.

24.Which of the following is true for bimetallic type thermometer?

a) Two metals have same temperature coefficients
b) Two metals have different temperature coefficient
c) One metal is cooled always
d) None of the mentioned
Answer: b
Explanation: In a bimetallic type thermometer, two metals are used which are different in temperature
coefficients.

25.When bimetallic thermometer heated, curling occurs to the side of metal with least temperature
coefficients.
a) True
b) False
Answer: a

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Explanation: A bimetallic type thermometer, when heated curls to the side of metal with least temperature
coefficient. Number of curls will be proportional to temperature applied.

26.Analogous quantities of heat flow and temperature in electrical are _____________ and
_______________
a) Potential and current
b) Current and potential
c) Power and potential
d) Current and power
Answer: b
Explanation: Heat flow in the thermal system is analogous to current flow in electrical, and temperature
between two points is analogous to potential between two points in electrical.

27.Ratio of net amount of heat received and stored in the body for certain time interval is known as
_________________
a) Temperature
b) Thermal coefficient
c) Thermal storage capacity
d) None of the mentioned
Answer: c
Explanation: Thermal storage capacity denoted by C is the ratio of the Net amount of heat received and
stored in the body.

28.Heat transfer coefficient of a material with length l is _________

a) K/l
b) l/K
c) 1/K
d) Kl
Answer: a
Explanation: Heat transfer coefficient of a material is the ratio of K and l, where K is the thermal conductivity
of material and l is the length of the heat transfer path.

29.Ratio of net amount of heat received and stored in the body for certain time interval is known as
_________________
a) Temperature
b) Thermal coefficient
c) Thermal storage capacity
d) None of the mentioned
Answer: c
Explanation: Thermal storage capacity denoted by C is the ratio of the Net amount of heat received and
stored in the body.

30.Heat transfer coefficient of a material with length l is _________

a) K/l
b) l/K
c) 1/K
d) Kl
Answer: a
Explanation: Heat transfer coefficient of a material is the ratio of K and l, where K is the thermal conductivity
of material and l is the length of the heat transfer path.
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 Verified By Re-Verified By Approved By
Prepared By
Mr. Lavhate V. J. Mr. Patil S. S. Mr. Mandale R.K.
Mr. Mandale R. K.
Module Coordinator Academic Coordinator HoD EE

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