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Max. Marks: 100

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11110 Pages: 2

Name:

APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
SIXTH SEMESTER B.TECH DEGREE EXAMINATION(R&S), MAY 2019

Course Code: ME312
Course Name: METROLOGY AND INSTRUMENTATION

PARTA
Answer any three full questions, each carries 10 marks.

List out the various elements of measurement.
What is ABBE’s Principle?
Distinguish between accuracy and precision of an instrument?
Explain line standard and end standard measurement
Distinguish between limits and tolerance.
What is Taylor’s principle of gauging?
Explain any two types of Limit plug gauges
Explain the working of Sigma comparator with a neat sketch
List the advantages of pneumatic comparator?
Explain the working of a NPL flatness interferometer.
Distinguish between hole basis system and shaft basis system

With neat sketches explain the difference between clearance fit and interference
fit?
PART B

Answer any three full questions, each carries 10 marks.
Describe any three terms associated with a screw thread.
Differentiate between surface roughness and waviness?
List out the various methods to measure surface roughness.
What is meant by sampling length?
What is a CMM probe? Explain the various types of probes used in CMM

List out the application of Machine vision system?

Differentiate between the Type A and the Type B optical flats

With a neat sketch explain the machine vision system

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Duration: 3 Hours

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