Summer 2016 Metrology and Instrumentation Question Paper

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GUJARAT TECHNOLOGICAL UNIVERSITY
DIPLOMA ENGINEERING – SEMESTER – IV • EXAMINATION – SUMMER- 2016
Subject Code: 3341905 Date: 24-05 - 2016
Subject Name: Metrology & Instrumentation
Time: 10:30 AM TO 01:00 PM Total Marks: 70

Instructions:
1. Attempt all questions.
2. Make Suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. Use of programmable & Communication aids are strictly prohibited.
5. Use of only simple calculator is permitted in Mathematics.
6. English version is authentic.

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Q.1 Answer any seven out of ten. 14

1. Classify linear measuring instrument.
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2. State application of slip gauge.

3. State direct and indirect angular measuring instrument.

4. State application of spirit level.

5. Differentiate between roughness and waviness.

6. State name of errors in screw thread.

7. Define addendum and module.

8. State name of various types of limit gauges.

9. Define threshold and accuracy.

10. Differentiate between active and passive transducers.

Q.2 (a) Explain the functions of inspection. 03

OR

(a) Write short note on Wringing process of slip gauges. 03

(b) Explain the working principle of auto collimator. 03

OR

(b) Draw neat sketch of optical clinometers. 03

(c) Draw neat sketch of height gauge. 04

OR

(c) Draw a neat sketch of Parkinson’s gear tester 04

(d) Explain working principle of Height gauge. 04

OR

(d) Explain working principle of Parkinson’s gear tester. 04

Q.3 (a) Explain wedge method of measuring straightness. 03

OR

(a) Define the following terms.
1. CLA value 2. RMS value 3. Mean line. 03

(b) Explain any one method of measuring flatness. 03

OR

(b) Define best wire size. State its mathematical relation. 03

(c) Show the important elements of spur gear with a neat sketch. 04

OR

(c) Explain ‘V’ Block and dial indicator method of roundness testing. 04

(d) Draw a neat sketch of screw thread and list its main elements of
measurement. 04

OR

(d) Explain the working principle of sine bar with neat sketch. 04

Q.4 (a) Explain working principle of capacitance type transducer. 03

OR

(a) Explain working principle of pressure capsule. 03

(b) Describe any one method of Non-Destructive Testing. 04

OR

(b) What are limit gauges? State their advantages and disadvantages. 04

(c) Explain working principle of optical pyrometer with the help of figure. Also
state the advantages of pyrometer. 07

Q.5 (a) Draw the circuit diagram of resistance thermometer. Explain its principle
and working. 04

(b) Describe working principle of rotameter. 04

(c) Write short notes on snap Gauge. 03

(d) Write short note on inclined manometer. 03

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