Theory of Machine
The indicator using Watt mechanism is known as

Thomson indicator
Simplex indicator
Richard indicator
Thompson indicator

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

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

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Theory of Machine
A body is said to be under forced vibrations, when

None of these
A body vibrates under the influence of external force
There is a reduction in amplitude after every cycle of vibration
No external force acts on a body, after giving it an initial displacement

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