Machine Design
In a horizontal flat belt drive, it is customary to use

Idler pulley
Top side of belt as slack side
None of these
Bottom side of belt as slack side

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Machine Design
In composite or reverse laid 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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Machine Design
Form coefficient of spring is

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

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