43. The purpose of adjusting nut in a micrometer screw gauge is to
A.Take care of zero error
B.Impart slow motion
C.Compensate for wear between screw and nut
D.Take care of backlash
44. The taper of internal dovetail can be measured with the help of
A.Sine bar
B.Combination set
C.Balls of standard dimensions and slip gauges
D.Clinometer
45. External taper can be accurately measured with the help of
A.Sine bar and slip gauges
B.Dividing head
C.Precision balls and height gauge
D.Combination set
46. Stick micrometers are designed for measuring
A.Bore of cylinders
B.Longer external lengths
C.Cylindricity
D.Longer internal lengths
47. Differential screw micrometer is used
A.To give direct indication of difference between two readings
B.For very high degree of accuracy.
C.For digital readout
D.To measure diameter of inaccessible holes
48. 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
49. The diameter of very large bores can be, measured accurately by
A.Fiexibile graduated tape
B.Swinging a pin gauge in the bore.
C.Keilpart gauge
D.Four balls method
Page 7 of 32