When a close coiled helical spring is compressed, its wire is subjected to________________?

A. Tension
B. Shear
C. Compression
D. All of the above

Belt slip may occur due to________________?

A. Heavy load
B. Loose belt
C. Driving pulley too small
D. All of the above

If two springs are in parallel then their overall stiffness will be_______________?

A. Half
B. Same
C. Double
D. Unpredictable

Antifriction bearings are__________________?

A. sleeve bearings
B. hydrodynamic bearings
C. thin lubricated bearings
D. ball and roller bearings

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

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

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

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

A. 5°
B. 8°
C. 15°
D. 25°

Whether any core is required in wire ropes________________?

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