Resisting force
Mass
Friction
Inertia

## Theory of Machine A spring controlled governor is found unstable. It can be made stable by

Increasing the spring stiffness
Increasing the ball mass
Decreasing the spring stiffness
Decreasing the ball mass

## Theory of Machine In order to balance the reciprocating masses,

None of these
Primary forces and couples must be balanced
Secondary forces and couples must be balanced
Both (A) and (B)

Circle
Ellipse
Straight line
Parabola

## Theory of Machine Torsional vibrations are said to occur when the particles of a body moves

In a circle about its axis
Perpendicular to its axis
None of these
Parallel to its axis

## Theory of Machine The sense of Coriolis component 2 ωv is same as that of the relative velocity vector v rotated at

45° in the direction of rotation of the link containing the path
90° in the direction of rotation of the link containing the path
180° in the direction opposite to the rotation of the link containing the path
45° in the direction opposite to the rotation of the link containing the path