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Subject Code: 2141901
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER-IV (NEW) EXAMINATION - WINTER 2018
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Subject Name: Mechanical Measurement & Metrology
Time: 02:30 PM TO 05:00 PM
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Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
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Q.1 (a) Explain working principle of Piezoelectric Accelerometer with neat sketch. 03
(b) Differentiate the term (1) Limit and Span (2) Reproducibility and Repeatability 04
(c) Explain Generalized Measurement System using suitable example. 07
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Q.2 (a) State the working principal of Vernier Caliper. How least count of Vernier caliper can be calculated? 03
(b) Define Thermometric Fluid. List name of Thermometric fluid. State Characteristics of good Thermometric fluid 04
(c) Explain micrometer Screw with neat sketch, working principle, Construction and Least count. 07
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OR
(c) Explain the procedure to measure angle using Sinbar table and state it’s limitation. 07
Q.3 (a) Differentiate Accuracy & Precision 03
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(b) Write a short note on Errors in Screw Thread: 04
(c) Explain Constant chord method for gear tooth measurement. 07
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OR
Q.3 (a) Give comparison between involute and cycloidal gears. 03
(b) Distinguish between Primary, Secondary, Tertiary and working standards of length. 04
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(c) Explain Three wire method for screw thread measurement. 07
Q.4 (a) Explain surface texture characteristics. 03
(b) Explain adverse effect of poor surface finish. 04
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(c) Classify torque and power measurement techniques. Explain torsion bar dynamometer. 07
OR
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Q.4 (a) Define Errors & Classify the Errors. 03
(b) Write a Short note on LVDT. 04
(c) Sketch and describe the construction and working of Tomlinson surface roughness tester. 07
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Q.5 (a) Explain Eddy current Dynamometer. 03
(b) Write short note on Optical Flat. 04
(c) Classify the Comparators and explain Sigma Comparators with neat sketch. 07
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OR
Q.5 (a) Explain the calibration of Thermometer. 03
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(b) Write short note on LVDT with respect to force measurement 04
(c) Explain Tool Maker’s Microscope with neat sketch. 07
Date: 05/12/2018
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Total Marks: 70
This download link is referred from the post: GTU BE/B.Tech 2018 Winter Question Papers || Gujarat Technological University
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