Allen bolts are___________________?

A. Self locking bolts
B. Designed for shock load
C. Used in aircraft application
D. Provided with hexagonal depression in head

I.S. specifies following total number of grades of tolerances__________________?

A. 18
B. 16
C. 20
D. 22

In composite or reverse laid ropes___________________?

A. Direction of twist of wires in strands is opposite to the direction of twist of strands
B. Direction of twist of wires and strands are same
C. Wires in two adjacent strands are twisted in opposite direction
D. Wires are not twisted

Basic shaft is one__________________?

A. Whose upper deviation is zero
B. Whose lower deviation is zero
C. Whose lower as well as upper deviations are zero
D. Does not exist

Whether any core is required in wire ropes________________?

A. Yes
B. No
C. Sometimes
D. Rarely

In standard taper roller bearings, the angle of taper of outer raceway is___________________?

A. 5°
B. 8°
C. 15°
D. 25°

Three different weights fall from a certain height under vacuum. They will take______________?

A. Same time to reach earth
B. Times proportional to weight to reach earth
C. Times inversely proportional to weight to reach earth
D. Unpredictable

In oilness bearings________________?

A. The oil film pressure is generated only by the rotation of the journal
B. The oil film is maintained by supplying oil under pressure
C. Do not require external supply of lubricant
D. Grease required to be applied after some intervals

Oil in journal bearing should be applied at the point where load is________________?

A. Nil or lightest
B. Maximum
C. Average
D. Any one of the above

The usual clearance provided in hydrodynamic bearing per mm of diameter of shaft is___________________?

A. 0.01 micron
B. 0.1 micron
C. 1 micron
D. 10 microns