ME6504 MM Important Questions, METROLOGY AND MEASUREMENTS Answer Key – MECH 5th SEM Anna University

UNIT – I BASICS OF METROLOGY PART-A (2 MARKS)

1. What are the uses of measurement?
2. What is legal metrology?
3. What are the objectives of metrology
4. What are the basic components of a measuring system?
5. Distinguish between Line standard and End standard.
6. Define the term Sensitivity of an instrument.
7. Differentiate between precision and accuracy.
8. Define the term reliability.
9. Give any four methods of measurement.
10. Give classification of measuring instruments.
11. Define Span.
12. Distinguish between repeatability and reproducibility.
13. Define error.
14. Distinguish between static and random error?
15. What are the sources of error?
16. Write short note on “Systematic errors”.
17. What are the factors affecting the accuracy of the measuring system?
18. Write short notes on the classification of error

19. What is the role of N.P.L
20. Explain the different types of units
    PART-B (16 MARKS)

1. Explain the need for measurement
2. Differentiate between precision and accuracy with suitable example.
3. State the requirements for an instrument to measure accurately.
4. What are the various possible sources of errors in measurements? What do you
   understand by systematic error and random errors?
5. Explain in detail various types of errors that may arise in engineering measurements
   and the ways to control it.
6. Explain the different types of standards.
7. Explain in detail the legal metrology