Download PTU B.Tech 2020 March IE 3rd Sem Measurements And Metrology Question Paper

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Roll No. HEEEEEEEEEE Total No. of Pages : 02

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INSTRUCTIONS TO CANDIDATES :

1. Attempt All EIGHT questions from SECTION-A carrying TWO marks each.
2. Attempt any SIX questions out of EIGHT from SECTION-B carrying FOUR marks each.

SECTION-A

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Q1 Answer briefly :

1. What are systematic errors and precision errors?
2. What are slip gauges? What is wringing?
3. What do you understand by roundness and circularity?
4. What is autocollimator?

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5. What is venturimeter? Where is it used?
6. Write name of instruments to measure :
   1. Smoke density
   2. Humidity
   3. pH value
   4. Film thickness

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7. What is Tylor’s principle?
8. What is international organisation of legal metrology?

SECTION-B

Q2. Explain precision, resolution, sensitivity and zero error.

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Q3. Explain working principle of micrometer. How are the micrometers tested?

Q4. What is CMM? Explain its main components and uses.

Q5. Explain the principle and different scales of hardness testing.

Q6. Explain pressure measuring gauges.

Q7. Explain different types of sensors.

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Q8. What is meaning of tolerances? Explain hole based system and shaft based systems with the help of diagram.

Q9. What is calibration? Explain its need and methodology.

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