STUPIDSID
1 (a)
Define metrology. what are the objectives of metrology.
5 M
1 (b)
Explain "Imperial standard yard" and "International prototype meter", with neat sketches.
10 M
1 (c)
A calibrated meter end bar has an actual length of 1000.0002 mm. It is used in calibration of two bars A and B, each having a basic length of 500 mm. When compared with the meter bar LA+ LB was found to be shorter by 0.0003 mm. In comparing A and B, it was found thatA was 0.0004 mm longer than B. Find the actual length of A and B.
5 M
2 (a)
Differentiate : i) unilateral and bilateral tolerances ii) clearance fit and interference fit.
6 M
2 (b)
Determine the dimensions of shaft and hole for a fit 30 H⊂7f ⊂ 8. The given data are: \[ i=0.45 \sqrt[3]{D}+0.001D \] microns. Fundamental deviation for f shaft is -5.5D ⊃ 0.41 at microns, 30 mm falls in the diameter step of 18 and 30. Tolerance grade for IT⊂ 7 and IT⊂8 are 16i and 25i respectively. Also design plug gauge to check the above hole. Take wear allowance as 10% of the gauge tolerance.
10 M
2 (c)
Explain : i) Shaft basis system ii)Hole basis system.
4 M
3 (a)
With a neat sketch, explain the construction and working of Johannson Mikrokator comparator
8 M
3 (b)
Explain with a neat sketch, the working of Solex pneumatic comparator. What are its advantages?
8 M
3 (c)
Explain the principle of sine bar.
4 M
4 (a)
With a neat sketch, explain the working principle of an autocollimator.
6 M
4 (b)
Define "Effective diameter". Explain the 3-wire method of finding the effective diameter of screw threads.
8 M
4 (c)
Explain with a sketch, how the chordal thickness is measured by using gear tooth vernier calliper.l
6 M
5 (a)
Define measurement. With a block diagram,explain the generalized measurement system explain the with a suitable example.
8 M
5 (b)
Define the following terms : i) precision ii) hysteresis iii) sensitivity.
6 M
5 (c)
Explain the principle of capacitive type electrical transducer. With a skech explain any one type of capacitive transducer.
6 M
6 (a)
Explain th inherent problems present in mechanical modifying system.
6 M
6 (b)
With a block diagram, explain the general telemetering system.
6 M
6 (c)
Explain with neat sketches : i) stylus type oscillograph ii) x - y ? plotter.
8 M
7 (a)
Sketch and explain the analytical balance (equal arm balance).
8 M
7 (c)
Describe the working principle of pirani gauge with a sketch.
6 M
7(b)
Explain how the torque is measured using Prony brake dynamometer. What are its disadvantages?
6 M
8 (a)
State the laws of thermocouples.
4 M
8 (b)
Explain the construction and working of optical pyrometer.
8 M
8 (c)
Define gauge factor. Explain the wheat stone bridge arrangement for stain measurement.
8 M
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