GTU BE 2020 Summer Question Papers || Gujarat Technological University
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER- IV EXAMINATION — SUMMER 2020
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Subject Code: 3141709 Date: 28/10/2020
Subject Name: Principle of Measurement Science
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
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| MARKS | |
| Q.1 (a) Define sensor, temperature and precision. | 03 |
| (b) Draw and describe functional block diagram of measurement system. | 04 |
| (c) Explain with a neat figure, principle, construction, working, advantages and disadvantages of 2-wire,3-wire and 4-wire RTD. | 07 |
| Q.2 (a) Define transducer and classify them in detail. | 03 |
| (b) Explain with a neat figure, principle, construction and working of Bimetallic thermometer. | 04 |
| (c) Write a short note on Air Purge/Bubbler type liquid level measurement with construction, working and diagram. | 07 |
| OR | |
| (c) Describe the principle of level measurement using capacitance and show using equations how capacitance changes with level change. | 07 |
| Q.3 (a) What is the significance of dead weight of tester? Explain it with schematic diagram. | 03 |
| (b) Explain principle for ultrasonic level measurement. | 04 |
| (c) Explain McLeod gauge for vacuum measurement with neat diagram. | 07 |
| OR | |
| Q.3 (a) Define the vacuum pressure. Explain pirani vacuum gauge with all details. | 03 |
| (b) Explain rotameter type flow meter with neat sketch. | 04 |
| (c) Discuss the principle and construction of orifice plate flowmeter. | 07 |
| Q.4 (a) Discuss the basic principle of manometer. | 03 |
| (b) Explain in detail thermoelectric Laws for thermocouple. | 04 |
| (c) Explain with a neat the working of a flow meter used for measuring unsteady flow of gases. | 07 |
| OR | |
| Q.4 (a) Listout different displacer type level detectors. Explain torque tube type displacer level detector. | 03 |
| (b) Explain doppler and transit time ultrasonic meter for flow measurement. | 04 |
| (c) Explain stagnation point and working principle of pitot tube. | 07 |
| Q.5 (a) List out positive and negative metal combination for J,K,R,S,T thermocouple. | 03 |
| (b) Explain working of pressure switch in detail | 04 |
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| (c) Explain the working principle of bourdon tube with neat sketch and basic principle of operation. | 07 |
| OR | |
| Q.5 (a) Explain flapper-nozzle assembly in detail. | 03 |
| (b) Explain level switch. | 04 |
| (c) Explain radiation pyrometer with diagram. | 07 |
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