918. A sine bar is specified by
A.Its total length
B.The centre distance between the two rollers
C.The size of the rollers
D.The distance between rollers and upper surface

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919. Profile of a gear tooth can be checked by
A.Sine bar
B.Bench micrometer
C.Optical pyrometer
D.Optical projector

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920. Gear tooth caliper is used to find the chordal thickness of following type of gear tooth
A.Spur gears
B.Helical gears
C.Worm gears
D.Bevel gears

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921. All the thread characteristics can be measured precisely with
A.Screw pitch gauge
B.Micrometer with V anvil
C.Tool room microscope
D.Thread gauge

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922. The advantage of vernier caliper over micrometer is that it
A.Is easier and quicker to use
B.Is more accurate
C.Can be used to make both inside and outside measurements over a range of sizes
D.All of the above

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923. The combination set can be used to
A.Check angular surfaces
B.Draw circles and arcs
C.Scribe lines
D.All of the above

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924. Before drilling at a point, it should be ensured that
A.Punch mark has been made at the point
B.Position of point has been marked by two intersecting lines
C.Centre drill has been used at the point
D.Diameters have been located

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