Distinguish between Primary, Secondary, Tertiary and working standards of length.
[ marks]Describe errors and sources of errors.
[5 marks]Give classification of comparators and explain dial indicator with neat sketch.
[ marks]Compare comparator and measuring instrument.
[5 marks]Describe with sketch the construction and working of sigma comparator.
[5 marks]Explain adverse effect of poor surface finish.
[5 marks]Define : (1) primary texture and (2) secondary texture
[5 marks]Explain following methods of specifying roughness value: Peak-to- valley height method; Centre-line-average method; Root mean square method.
[5 marks]Sketch and describe the construction and working of Tomlinson surface05 roughness tester.
[ marks]Explain construction , working and principle of vernier height gauge.
[5 marks]Enlist various instruments used for thread and gear measurement and05 explain any one in detail.
[ marks]Explain bourdon tube type pressure gauge.
[5 marks]Explain construction and use of vernier bevel protractor.
[5 marks]Describe defects likely to occur in measuring instruments and their remedies.
[ marks]Explain thermocouple in detail.
[5 marks]Explain construction , working and principle slip gauge.
[5 marks]Construction and working of auto collimator.
[5 marks]