GTU BE/B.Tech 2019 Winter Question Papers || Gujarat Technological University
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER- IV (New) EXAMINATION - WINTER 2019
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Subject Code: 2141901
Subject Name: Mechanical Measurement & Metrology
Date: 13/12/2019
Time: 10:30 AM TO 01:00 PM
Total Marks: 70
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Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
| Q.1 | (a) State necessity and objectives of metrology. | 03 |
| (b) Differentiate following terms: 1) Accuracy and precision ii) Repeatability and Reproducibility | 04 | |
| (c) Describe errors and sources of errors. | 07 | |
| Q.2 | (a) What precaution should be taken while using micrometer. | 03 |
| (b) Write a short note on : Spirit level | 04 | |
| (c) Explain the construction and working of a Vernier Caliper. | 07 | |
| OR | ||
| (c) Explain the followings: 1) Mechanical strain gauges ii) Gauge factor | 07 | |
| Q.3 | (a) Write application and limitation of angle gauges. | 03 |
| (b) Explain Proving ring with sketch. | 04 | |
| (c) Describe with sketch the construction and working of a RTD. Give advantages and disadvantages of RTD. | 07 | |
| OR | ||
| (c) What is a “Peltier effect’ in thermocouple? | 07 | |
| Q.4 | (a) Explain hemispherical bore gauge with applications. | 03 |
| (b) What are absorption dynamometers? Explain any one with a neat sketch. | 04 | |
| (c) List out various characteristics of' good comparators | 07 | |
| Q.5 | (a) Write a short note on seismic accelerometer. | 03 |
| (b) Explain Tool maker’s Microscope. | 04 | |
| (c) Explain the construction and working of LVDT with its advantage and disadvantages. | 07 | |
| OR | ||
| (c) Write the advantages of Coordinate measuring machines | 07 | |
| Q.6 | (a) Explain Liquid in glass Thermometer. | 03 |
| (b) Explain surface texture characteristics. | 04 | |
| (c) Explain adverse effect of poor surface finish. | 07 | |
| OR | ||
| (c) Explain Two wire method for measuring effective diameter of thread. | 07 | |
| Q.7 | (a) Give comparison between involute and cycloidal gears. | 03 |
| (b) Explain Parkinson gear tester with neat sketch. | 04 | |
| (c) Sketch and describe the construction and working of Tomlinson surface roughness tester. | 07 | |
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