GOVERNMENT POLYTECHNIC, AURANGABAD.
(An Autonomous Institute of Govt. of Maharashtra)
\\PURSUIT FOR EXCELLENCE\\
Examination [191] : Nov.-Dec. 2019
Programme: Diploma in Mechanical Engineering. Enrollment No. :
Course: Measurement & Controls Course Code: 6M207
Max Marks: 80 Time: 03 Hours Date: 7 May 2022
Instructions:
1. All Questions are compulsory.
2. Figures to the right indicate full marks.
3. Assume suitable data wherever necessary.
4. Use of pocket size non-programmable calculators, mini-drafter, block patterns and mathematical and steam tables is permitted.
5. Illustrate your answers with neat sketches, if necessary.
6. Course outcomes of question bits are mentioned prior to question bit.
Q.No.1 Solve any TEN of the following 20
CO5 a. Explain the term calibration.
CO3 b. State functions of instrument.
CO6 c. Write down following cases of measurement as contact or non contact type. (i)
Measurement of temperature by using thermometer. (ii) Measurement of
temperature of hot casting.
CO2 d. Define (i) Accuracy (ii) Precision.
CO4 e. State advantages of automatic control system.
CO6 f. Suggest name of pressure gauge for measurement of extreme low pressure.
CO1 g. Give classification of flow transducer.
CO5 h. State different scales of temperature measurement with its conversion.
CO6 i. Name temperature sensor for measuring temperature sensor for measuring
temperature above 30000C.
CO4 j. Draw neat sketch of servomotor mechanism.
CO3 k. State advantages of electromagnetic balance.
CO3 l. List different types of strain gauges.
CO3 m. Draw neat sketch of carbon microphone.
CO5 n. How speed measurement is done by stroboscope?
Q.No.2 Solve any THREE of the following 12
CO1 a. Explain generalized measurement system with the help of block diagram.
CO3 b. Explain thermal conductivity gauge in detail.
CO4 c. Identify and explain the open or closed loop system for the following cases.
(i) traffic signal on road (ii) Air conditioner.
CO2 d. Explain four important dynamic characteristics of the measuring instrument.
Q.No.3 Solve any THREE of the following 12
CO1 a. Classify instrument on the basis of following (i) Application (ii) Mode of
operation (iii) Energy conversion (iv) Output.
CO3 b. Explain electrical resistance pressure gauge.
P.T.O.
CO2 c. Classify errors in the instrument and describe any two errors.
CO4 d. With the help of functional block, diagram. Explain feedback control system.
Q.No.4 Solve any TWO of the following 12
CO4 a. Explain three different modes of control actions used in control system.
CO3 b. State classification of liquid level measurement methods and explain with neat
sketch float and shaft gauge.
CO3 c. Explain working principles of hot wire anemometer in constant current and
constant temperature mode with neat sketch.
Q.No.5 Solve any TWO of the following 12
CO6 a. Explain the working of ultrasonic flow meter and state situation in which this
flow meter is preferred.
CO3 b. Write construction and working of eddy current dynamometer with neat sketch.
CO5 c. Explain working principle of optical pyrometer with neat sketch and state
advantages.
Q.No.6 Solve any THREE of the following 12
CO3 a. Draw and explain strain gauge transmission dynamometer.
CO3 b. Explain Mcleod gauge with neat sketch.
CO6 c. Write down any four practical applications of LVDT.
CO5 d. Explain working principles of thermocouple.
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