Download GTU BE/B.Tech 2018 Winter 4th Sem New 2141901 Mechanical Measurement And Metrology Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2018 Winter 4th Sem New 2141901 Mechanical Measurement And Metrology Previous Question Paper

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1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ?IV (NEW) EXAMINATION ? WINTER 2018
Subject Code:2141901 Date:05/12/2018

Subject Name:Mechanical Measurement & Metrology

Time: 02:30 PM TO 05:00 PM Total Marks: 70

Instructions:

1. Attempt all questions.

2. Make suitable assumptions wherever necessary.

3. Figures to the right indicate full marks.

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

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
OR
(c) Explain the procedure to measure angle using Sinbar table and state it?s
limitation.
07
Q.3 (a) Differentiate Accuracy & Precision 03
(b) Write a short note on Errors in Screw Thread. 04
(c) Explain Constant chord method for gear tooth measurement. 07
OR
Q.3 (a) Give comparision between involute and cycloidal gears. 03
(b) Distinguish between Primary, Secondary, Tertiary and working standards of
length.
04
(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
(c) Classify torque and power measurement techniques. Explain torsion bar
dynamometer.
07
OR

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
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
OR
Q.5 (a) Explain the calibration of Thermometer. 03
(b) Write short note on LVDT with respect to force measurement 04
(c) Explain Tool Maker?s Microscope with neat sketch. 07

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