ME2304 ENGINEERING METROLOGY AND MEASUREMENTSQUESTION BANK

UNIT - I - CONCEPT OF MEASUREMENT

Part—A

1. What is the need for measurement’? 2. What are the basic components of a measuring system’3. What is the relationship between sensitivity and the range’4. Explain the term calibration5. What is meant by calibration of a measuring instrument? 6. Give the difference between accuracy and precision. 7. Define the term ‘Sensitivity’ 8. Define the term precision9. Distinguish between reproducibility and repeatability.10. Distinguish between repeatability and reproducibility 11. What is inaccuracy?12. What are the types of error are measurements?13. What are the causes by sources of errors in measurement? 14. What is loading error?15. What is meant by nominal size and tolerance?16. What is the relation between accuracy. repeatability and systematic error?17. What is the relation between total static error of a measuring system and linearity error.18. Distinguish between relative error and random error. 19. Distinguish between dimensional and term tolerances.20. Define interchangeability.

Part-B1. Describe tite various elements and its functions of generalized measurement systems,2. Draw the block diagram of a generalized measurement system and explain the various

stages with an example. 3. Explain briefly the classification of various measuring methods. 4. Enumerate the desirable characteristics of precision measuring instruments.5. Define accuracy. Explain how the accuracy of an instrument can be specified.6. Explain the classification of various measuring methods. 7. Explain the purpose of calibrating ihe instrument 8. Explain the following term & suitable examples:

ReadabilityRepeatabilityCalibration andDynamic response.

9. Write detailed notes on : i. Sensitivity , Calibration

ii. Precision, Accuracyiii. Sensitivity,

10. Write notes on:(j) Calibration (ii) Interchangeability.

11. Describe the different types of errors and how can be eliminated.12. Briefly discuss on the characteristics systematic errors and random errors.

Discuss on geometric and dimensional toleroncing with suitable examples

UNIT - II - LINEAR AND ANGULAR MEASUREMENT

PART-A

1. What is the importance of calipers in measurements?2. Name the different types of calipers.3. Give the advantages of digital vernier caliper.4. What is meant by dial calipers?5. What is wringing of slip gauges?6. Indicate the various grades of slip gauges.7. What are the materials used in the maunfacturing of slip gages? 8. What will happen if the gauge blocks are just simply placed over one another and measurements made? 9. What is a surface plate?10. What are optical flats? 11. What is a comparator?12. Narrate the need tbr comparators13. What are the different types of comparator.14. What are the advantages of mechanical comparator? 15. Briefly discuss the merits and demerits ol electrical and pneumatic comparators.16. List the advantages of electrical type comparator

Part-B

1. Compare and contrast the relative merits and demerits of vernier calipers. micrometer Screw gauge. dial gauge - in the tabular form. With a neat diagram. explain the construction and working principle of a depth micrometer.

2. Explainthe following with neat sketches (j) Differential screw micrometer

(ii) Micromcter depth gauge

(iii) Thread micromeler caliper

(v) Micrometer threed Gauge

3. What are slip gauges? how are they manufactured?

4. Discuis the characteristics and applications of slip gauges.

5. Explain the process ofWringing’ in slip gauges.

6. What are the fundamental requirements of comparators? 7. Explain the working method of mechanical optical comparator with a sketch.8. Explain the working principle of optical comparators with sketches,9. Describe the functioning of an electronic comparator.