Machine Design
A fast and loose pulley drive is used when

Shafts are arranged parallel and rotate in the same directions
Shafts are arranged parallel and rotate in the opposite directions
Shafts are arranged at right angles and rotate in one definite direction
Driven shaft is to be started or stopped whenever desired without interfering with the driving shaft

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Machine Design
Pitch point of a cam is

A point on the pitch curve having maximum pressure angle
A point on the pitch curve having minimum pressure angle
Any point on the pitch circle
Any point on the pitch curve

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Machine Design
In cross or regular lay ropes

Wires are not twisted
Wires in two adjacent strands are twisted in opposite direction
Direction of twist of wires in strands is opposite to the direction of twist of strands
Direction of twist of wires and strands are same

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