GTU Mechanical Measurement And Metrology - December 2014 Exam Question Paper

GTU Mechanical Engineering (Semester 4)
Mechanical Measurement And Metrology
December 2014

Total marks: --
Total time: --

INSTRUCTIONS
(1) Assume appropriate data and state your reasons
(2) Marks are given to the right of every question
(3) Draw neat diagrams wherever necessary

1 (a) Differentiate the followings briefly.
(i) Precision and Accuracy
(ii) Line and End Standards
(iii) Systematic Error and Random Error
(iv) Instrument and Measurement

7 M

1 (b) Explain the following characteristics of measurement system:
(i) Dead zone (ii) Drift (iii) Sensitivity (iv) Threshold (v) Fidelity (vi) Linearity (vii) Overshoot

7 M

2 (a) Classify measurement methods. Discuss Primary, Secondary and tertiary methods of measurement with suitable examples.

7 M

Answer any two question from Q2 (b) or Q2 (c)

2 (b) Define detector-transducer. Discuss briefly different types of mechanical detector-transducer with neat sketch.

7 M

2 (c) Define LVDT. Explain its working with neat sketch. Also state its practical application.

7 M

Answer any two question from Q3 (a), (b) or Q3 (c), (d)

3 (a) Sketch micrometer. Label all important parts of it. Also explain least count of micrometer with suitable example.

7 M

3 (b) Describe followings with neat sketch.
(i) Slip Gauge (ii) Dial Indicator

7 M

3 (c) What is comparator? Why it required? Give its classification in detail.

7 M

3 (d) Explain principle of Auto-Collimator. Sketch Auto-Collimator and state its application.

7 M

Answer any two question from Q4 (a), (b) or Q4 (c), (d)

4 (a) Sketch two wire methods for measuring effective diameter of screw thread. Also give its limitation.

7 M

4 (a) Describe working and construction of Tomlinson surface tester for surface measurement.

7 M

4 (b) List out the various elements required to be check during inspection of gear. Describe methods of measurement of any two in detail.

7 M

4 (b) Discuss any three alignment test conducted on radial drilling machine.

7 M

Answer any two question from Q5 (a), (b) or Q5 (c), (d)

5 (a) Write short note on Thermister.

7 M

5 (b) Classify force balance pressure gauges. Explain any one in detail.

7 M

5 (c) Describe construction and working of optical pyrometer.

7 M

5 (d) Explain followings briefly.
(i) Stroboscope
(ii) Resonance (vibrating reed) tachometer

7 M

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