1.

On-off control is also called as (UC5)

A, One position control B, Two position control C, Four position control D, Half position control
2. In which stage the measurement system comes in contact with the measured or the quantity to
be measured? (UC10,12)
A) Transducer stage B) Signal processor stage C) Output stage D) Production stage.
3. The term given to programs stored in ROMs or in programmable devices which permanently
keep their stored information. (UC5)
A) Hardware B) Software C) Firmware D) Universal serial bus
4. Which one is a passive sensor? (UC4)
A) Thermocouple B) Thermister C) Strain gauge D) Silicon
5. The region between the limits within which a quantity is measured, received or transmitted,
expressed by stating the lower and upper range values is____.(UC5,UC10)
A) Instrument range B) Calibration range C) Zero error D) Field standard

6. If there are 3 identical resistors connected parallel the total resistance will be.
A) 3 time each individual resistors
B) 2/3 times each individual resistor
C) 1/3 times each individual resistors
D) 4/3 times each individual resistors
7. The responsible person to maintain the quality of work performed by a work team.
A, supervisor
B, all members of the team
C, worker
D, quality assurance officer
8. Resistivity of a conductor is mostly affected by .
A, composition
B, pressure
C, Temperature
D, current
9. What should you do when a problem arises while you are repairing electronic equipment that you
cannot solve by yourself?
A, quit repairing
B, throw it away
C, ask for assistance
D, murmuring & crying
10. What is the power factor in capacitive
A, zero
B, unity
C, lagging
D, leading
11. The demand factor for the electrical system is the ratio of
A) Maximum demand to connected load
B) Maximum demand to average load
C) Average power to maximum power
D) Relative power to total power
12. Dielectric materials are
 A) Insulating materials
B) Semiconducting materials
C) Magnetic materials
D) Ferroelectric materials
13. Transformer cores are laminated in order to:
A) Simplify its construction
B) Minimize eddy current loss
C) Reduce loss
D) Reduce hysteresis’s loss
14. Star – delta starter of an induction motor
A) Inserts resistance in rotor circuit
B) Inserts resistance in stator circuit
C) Applies reduced voltage to rotor
D) Applies reduced voltage to stator
15. The minimum change in input value that can be defected by measuring called
A) Threshold
B) Resolution
C) Sensitivity
D) Error
16. Multiplying resistor is required in
A) Ammeter
B) Power
C) Ohmmeter
D) Voltmeter
17. A transformer having 1000 primary turns is connected to a 250V AC supply for a secondary
voltage 400 V. The number of secondary turns should be
A) 1600
B) 250
C) 400
D) 125
18. Basic meter movement has an internal resistance of 50hom and full scale deflection current
150MA. What will be the value of the shunt resistor required to measure?
A) 20Ω
B) 35 Ω
C) 15 Ω
D) 50 Ω
19. The difference between the synchronous speed and the actual speed of an induction motor is
known as
A) Regulation
B) Back lash
C) Slip
D) Lag
20. The aim of preventive maintenance is to
A) Increase the reliability of a tool or equipment.
B) Increase the failure rate of tool or equipment.
C) Reduce the life span of a tool or equipment.
D) Improve the standard quality of a tool or equipment
21. An electronic component which is used as switching device
A) Capacitor B) Zener diode C) Resistor D) Transistor
22. ______Analogue display in instrumental have the following advantage
 A. The display can be set at any value between 0% and 100%
B. Read off errors due to parallax scale
C. No conversion, reading more accurate
D. Measured value output directly
23. _____Determination of electrical resistance from voltage measurement in-----measuring
method

A. Direct B. comparison C. Indirect D. Record

24. . ______Errors that remain constant though all repetition of measurement is said to be
A. Random error B. Cross error C. Systematic error D. Deviation error
25. ______A process control system is stable
A. If the controlled variable is to oscillate above and below
B. If it can return the controlled variable to steady state
C. If oscillation and steady state value present in the O/p stage
D. If both oscillation and steady state value present in the I/P stage
26. _____The word calibrate in mechatronics indicate
A.Supply giving feedback
B. Supply giving set point
C.Supply giving output value
D.Supply giving measured value

27. _____The best application of capacitive transducer element in any liquid factory
A. To identify filled or under filled and overfilled containers
B. To identify number of container
C. To identify size of container
D.To identify presence of container
28. Pictorial representation of the cause and effect relationship between the input and output of a
physical system.(UC4)
A, Block diagram B, Circuit diagram C, Valve D, Filter
29. Supplies air to the pressure vessel through a pipe line and resistance to flow is provided by a
constriction.(UC5,9)
A, Hydraulic power system B, Electromechanical system C, Pneumatic system D, Transfer
function
30. A group of components which can complete certain tasks or achieve certain desired results in a
desired manner while working together is called as_____.(UC5,11)
A, Output system B, Sequence system C, Control system D, Succession system
31. Which one is displacement measurement sensor?(UC4,UC10)
A) Resistive sensor B) Light sensor C) Temperature sensor D) Light emitting diode
32. What is the input of the data acquisition system (DAS) to which a transducer is connected
called? (UC4)
A) Control element B) Interface C) Channel D) Function
33. The signal produced by changing the air pressure in the signal pipe in proportion to the
measured change in a process variable.(UC9)
A) Digital signals B) Analog signals C) Resistive temperature device D) Pneumatic signal
34. The region between the limits within which a quantity is measured, received or transmitted,
expressed by stating the lower and upper range values is____.(UC5,UC10)
A) Instrument range B) Calibration range C) Zero error D) Field standard
35. The main objectives of maintenance are (UC2)
A) To obtain plants and equipments at its minimum operating efficiency
B) To safeguard instruments by minimizing rate of deterioration
C) Help in implementation of wrong procedures for storage and consumption of spares
D) To hinder management in taking decisions on replacements or new investment
36. The main advantages of closed-loop control system (UC11)
A) Reduced sensitivity to disturbance
B) Complex and expensive to construct
C) The loss of gain
D) Quiet easy to become unstable
37. Which option below best describes the action of an opto-coupler?(UC 02)
A) It breaks the contact when there is excess current.
B) It breaks the contactwhen there is excess voltage
C) It transmits the input signal using fiber optics
D) It isolates the PLC from the input voltage
38. ----is the pressure measured by with respect to vacuum. (UC 01)
A) Gauge pressure
B) Atmospheric pressure
C) Differential pressure
D) Absolute pressure
39. A type of transformer which is used to instrument purpose.(UC 01)
A) Voltage transformer
B) Power transformer
C) Current transformer
D) Distribution transformer
40. See beck effect :- Voltage produced by thermocouple is proportional to the temperature
between the two junction(UC 07)
41. Accuracy :- The measure of the difference between indicated value and the true value (UC 03)
42.What is the impedance 60KHZ sine wave of 10MH (UC 03)
A) 3768Ω B) 3500 Ω C) 3868Ω D)3778Ω
43.
44.