brittle materials

ductile materials

plastic materials

non-ferrous materials

same

double

one-half

one-fourth

One side of the actual size

One side of the nominal size

Both sides of the actual size

Both sides of the nominal size

Force acting in the opposite direction to the motion of the body is called force of friction

The ratio of the limiting friction to the normal reaction is called coefficient of friction

A machine whose efficiency is 100% is known as an ideal machine

The velocity ratio of a machine is the ratio of load lifted to the effort applied

Increases the power transmitted

Decreases the power transmitted

Has no effect on the power transmitted

Is equal to maximum tension on the belt