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

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

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Theory of Machine
Angle of action of cam is defined as the angle

Moved by the cam from beginning of ascent to the termination of descent
Moved by the cam from the instant the follower begins to rise, till it reaches its highest position
Through which the cam rotates during the period in which the follower remains in the highest position
Of rotation of the cam for a definite displacement of the follower

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Theory of Machine
Inertia force acts

Along the direction of acceleration force
Opposite to the direction of acceleration force
Perpendicular to the acceleration force
None of the listed here

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