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UNIT-01[12 QUESTIONS]

1. Define measurement. What is the significance of measurements and what are themethods of measurement?

2. Explain in detail the generalized measuring system and its functional units with ablock diagram. Also give at least three illustration of measuring systems giving

generalized input-output configuration.

3. What is standard of measurement? Explain in brief the fundamental units and derivedunits.

4. Write a brief note on classification of measuring instruments.5. Discuss in brief the static characteristics of a measurement system.6. Discuss the dynamic characteristics of a measurement system. Also discuss the

dynamic performance characteristics of first order instrument in case of a step input.

7. Define error. What are the different types of errors? Also discuss in brief thecauses/sources for these errors.

8. Define the term calibration. What is static calibration?9. Discuss sensors and their types.10.Discuss transducers and their types.11.Explain signal conditioning and signal transmission in brief.12.Discuss the various signal display and recording devices.

UnitII

1. Define strain gauge and enumerate various types of strain gauges. Also explain thetypes the resistance strain gauges.

2. Explain strain gauge theory. What are the strain gauge circuits? Discuss Wheatstonebridge circuit as (a) static strain measurement and (b) dynamic strain measurement.

3. Discuss temperature compensation in strain gauges.4. Explain the following thermometers:

Bimetallic thermometer. Thermocouple and thermopile. Thermistors. Total radiation pyrometer and optical pyrometer. Filled thermometers.

5. What are the functions of accelerometers and vibrometers? Explain the followingaccelerometers: (1) LVDT accelerometers (2) Piezo-electric accelerometer (3)

capacitive accelerometers.

6. Explain the function and working of seismic accelerometers.7. Define pressure and give classification of pressure measuring instruments.8. What are the methods available for high pressure measurement? Explain in brief any

two methods.

9. What are the methods available for low vacuum pressure measurement? Explain inbrief any two methods.

10.Briefly discuss the methods of linear and angular displacement.

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11.Explain the working of stroboscope and its uses.12.Define tachometer and discuss its types in brief and state its uses.

Unit III

1. Discuss the standards of linear measurement. Also distinguish between line standardand end standard.

2. Define the term limit, fit and tolerances with suitable sketch.3. What do you mean by fit? State its classification and discuss them in brief with

suitable examples.

4. What do you understand by interchange-ability? Discuss fully interchangeableassembly and selective assembly.

5. What is gauge? What are the limit gauges and state their classification.6. Explain Taylors Principal of gauge design.7.

Explain and give uses of plug gauge, ring gauge , snap gauge and combination sets.8. Write short notes on:

Sine bar Sine centre Slip gauges V-block Universal surface gauges Feeler gauges Angle gauges

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Give the names of linear and angular measurement devices and their application.10.What is comparator? What are their uses? How is it different from measuringinstrument? State the classification of comparators.

11.Discuss the following comparators: Sigma comparator. Johansson Mikrokrator.

Unit IV

1.Define straightness and enumerate the various methods available for itsmeasurement. Also describe at least two of them in brief.

2. Define flatness and enumerate the various methods available for its measurement.Also describe at least two of them in brief.

3. Sketch and describe the working principle of auto-collimator. Also state the uses ofauto-collimator.

4. Define circularity and roundness. What are the errors associated with them? State thevarious methods for measuring roundness/circularity and describe at least two of

them in brief.

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5. Explain the principle of interferometry. State the uses of interferometry principle inmeasurement. Describe flatness measurement measurement by interferometry

principal with neat sketch?

6. What are interferometer? What are their advantages over optical flats? Describe theworking principal of Michelson Interferometer.7. Describe surface texture and its elements with neat sketch. Also enumerate thevarious methods for measuring surface roughness.

8. Discuss different numerical methods to find(or represent or quantitative evaluation)surface roughness. Name the stylus methods of measuring surface finish and explain

any of them with neat sketch

Tomlinson surface measurement method Talysurf surface measurement method.

9. Explain the working principle andapplication of Tool Makers microscope or Profileproject autocollimator with neat sketch.

10.What are the elements of screw thread measurement? Enumerate the various methodsto measure those elements of screw thread.

11.Explain two wire , three wire and thread micrometer method of measuring effectivediameter of screw thread.

12.Name the various methods for measuring gear tooth thickness. Explain the working ofgear tooth vernier calliper.

13.Describe the bench micrometer method for measuring major and minor diameter ofscrew thread.

SECTION-A

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