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

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
Moved by the cam from beginning of ascent to the termination of descent

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Theory of Machine
The steering of a ship means

Turning of a complete ship in a curve towards right or left, while it moves forward
Movement of a complete ship up and down in vertical plane about transverse axis
Rolling of a complete ship sideways
None of these

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Theory of Machine
In a circular arc cam with roller follower, the acceleration in any position of the lift will depend only upon

Total lift, centre of gravity of the cam and cam speed
Mass of cam follower linkage, spring stiffness and cam speed
Radius of circular arc, cam speed, location of centre of circular arc and roller diameter
Total lift, total angle of lift, minimum radius of cam and cam speed

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