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Diploma Engineering - SEMESTER–IV • EXAMINATION – SUMMER • 2014
Subject Code: 3341905 Date: 03-06-2014
Subject Name: Metrology and Instrumentation
Time: 10:30 am - 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. English version is considered to be Authentic.
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Q.1 (a) With the help of a neat sketch, explain the working principle of outside
micrometer and show 26.65 mm on it. 07
(b) Write a short note on Optical Bevel Protractor and find appropriate angle
gauges to produce 23ยบ49‟24‟. 07
Q.2 (a) Describe the working principle of “Tombilson surface meter”. 07
(b) Explain the method to check roundness of a shaft with the help of "V" block
and dial indicator. 07
OR
(b) Define straightness and describe the indicator and autocollimator method to
measure it. 07
Q.3 (a) Explain the methods to measure the effective diameter of a screw thread. 07
(b) Define the following (1) Addendum( 2) Dedendum (3) Circular pitch
(4) Thickness of tooth (5) Diametral pitch (6) Module (7) Pitch Circle Diameter. 07
OR
Q.3 (a) Write a short note on Gear Tooth Vernier Calliper. 07
(b) Define the following as related to screw thread: 1) Major diameter 2) Minor
diameter 3) Effective diameter 4) Pitch 5) Lead 6) Helix angle 7) Flank 07
Q.4 (a) What are limit gauges?State their advantages and disadvantages. 07
(b) Describe any one method of Non-Destructive Testing in detail. 07
OR
Q. 4 (a) What are “GO” and “NOT GO” members of limit gauges.?Sketch a plug
gauge and explain them. 07
(b) State the advantages and limitations of Non-Destructive Testing. 07
Q.5 (a) Differentiate between resistance thermometer and thermocouple. 07
(b) Classify the pressure measuring devices and list the different transducers to
measure pressure. 07
OR
Q.5 (a) With the help of a neat sketch, explain Bellow type pressure gauge. 07
(b) Classify the different flow measuring devices and list the different transducers
to measure flow. 07
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