Theory of Machine
Which of the following governor is used to drive a gramophone?

Hartnell governor
Watt governor
Porter governor
Pickering governor

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Theory of Machine
Hammer blow

Is the maximum horizontal unbalanced force caused by the mass provided to balance the reciprocating masses.
Varies inversely with the square of the speed
Is the maximum vertical unbalanced force caused by the mass added to balance the reciprocating masses
Varies as the square root of the speed

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