## Theory of Machine In higher pair, the relative motion is

Purely sliding
Purely turning
Purely rotary
Combination of sliding and turning

## Theory of Machine If the damping factor for a vibrating system is unity, then the system will be

Without vibrations
Over damped
Under damped
Critically damped

## Theory of Machine A spring controlled governor is said to be unstable when the controlling force

Increases as the radius of rotation increases
Remains constant for all radii of rotation
Increases as the radius of rotation decreases
Decreases as the radius of rotation increases

Circle
Ellipse
Straight line
Parabola

## Theory of Machine The critical speed of a shaft with a disc supported in between is equal to the natural frequency of the system in

All of these
Longitudinal vibrations
Torsional vibrations
Transverse vibrations

## Theory of Machine The example of successfully constrained motion is a

All of these
Piston reciprocating inside an engine cylinder
Motion of an I.C. engine valve
Motion of the shaft between a footstep bearing