Machine Design
The face of the tooth is the

Surface of the tooth above the pitch surface
Surface of the top of the tooth
Width of the tooth measured along the pitch circle
Surface of the tooth below the pitch surface

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Machine Design
Form coefficient of spring is

Its capability of storing energy
Load required to produce unit deflection
Ratio of coil diameter to wire diameter
Concerned with strength of wire of spring

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Machine Design
Pitch point of a cam is

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

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Machine Design
In composite or reverse laid ropes

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

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