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DIPLOMA ENGINEERING - SEMESTER–IV • EXAMINATION – WINTER - 2016
Subject Code: 3341905 Date: 28- 11-2016
Subject Name: Metrology and Instrumentation
Time: 02:30 PM TO 05:00 PM Total Marks: 70
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. Write the functions of Telescopic gauge?
2. What is wringing process?
3. Find the least count of the vernier with minimum of 0.5mm on main scale and
50 vernier divisions.
4. Define Roundness.
5. What is the use of Talysurf Tester?
6. State the full form i)CLA ii)RMS
7. Name the 2 methods for measure Gear tooth profile.
8. List the elements of internal Gear.
9. Name 4 limit gauges.
10. Name 4 pressure measuring devices.
Q.2 (a) List the linear measuring instruments with its Least count. 03
OR
(a) Differentiate the Centralized & Decentralized inspection. 03
(b) What is least count? How to find the least count of micrometer? 03
OR
(b) Write the uses of Slip gauges. 03
(c) Draw the labeled diagram of vernier calliper. 04
OR
(c) Draw the labeled diagram of vernier height gauge. 04
(d) Write the working principle of outside micrometer and show 25.15 mm On it. 04
OR
(d) Draw the labeled of bevel protactor. 04
Q.3 (a) Draw the symbol of surface roughness with complete detail. 03
OR
(a) Draw symbol of i)Roundness ii)Parallelity iii)Perpendicularity. 03
(b) State the advantages of non destructive testing. 03
OR
(b) Name the NDT methods. 03
(c) Explain with diagram roundness measurement. 04
OR
(c) Explain the working of dial indicator with diagram. 04
(d) Explain the Calibration of instrumentations. 04
OR
(d) Explain the working of sine bar with diagram. 04
Q.4 (a) List the types of gear and explain module. 03
OR
(a) Name 4 pressure measuring device and draw diagram of pitot tube. 03
(b) Explain the working of Bourdon tube pressure gauge. 04
OR
(b) What is comparator? Classify the Comparators. 04
(c) Explain with neat sketch “Gear tooth Vernier caliper”. 07
Q.5 (a) Explain the best wire size for thread measurements. 04
(b) Explain the principle of thermocouple. 04
(c) Name the various types of transducers. 03
(d) Explain plug gauge with the help of diagram. 03
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