ME2304 Engineering Metrology and Measurements Nov Dec 2015 Important Questions

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Anna University Chennai
Department of B.E Mechanical Engineering
Fifth Semester
ME2304 Engineering Metrology and Measurements
November / December 2015 Exam Important Questions
(Regulation 2008)

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1.E xplain the various systematic and random errors in measurements?

2. What is the need of calibration? Explain.the classification of various measuring methods.

3. Define precision, accuracy, readability and sensitivity with respect to measurement.

4. Describe loading errors and environmental errors

5. With neat diagram explain the construction and working principle of depth micrometer?

6. What is auto collimator? With neat sketch explain the working principle of microoptic auto
collimator?

7. Explain with a schematic sketch the working principle of solex pneumatic comparator.

8. Describe the working principle, advantages and disadvantages of optical comparators.

9.How to check the composite errors of the gear by using Parkinson gear testing machine? Explain it in detail?

10. Briefly describe major, minor and effective diameter of thread?

11.Describe the two wire method of finding the effective diameter of screw threads.

12.Describe the chordal thickness method using gear tooth vernier caliper.

13. Explain with a neat sketch the working of talysurf instrument for surface finish measurement. What is the symbol for fully defining surface roughness and explain each term?

14. Describe in detail the method of checking roundness by using Roundness Measuring Machine. State its advantages.

15. Explain the working principle of AC LASER interferometer and how the straightness is measured?

16. Explain in detail the various methods of testing accuracy of horizontal milling machine and lathe using laser interferometer.

17. Explain how cup and vane type anemometers are used to measure air movement.

18. With neat sketch explain the construction and working principle of vapour pressure thermometer.

19. What are rotameters? State its applications.

20. Explain the working principle of an electrical resistance thermometer.

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