Machine Design
When spring index increases, the value of Wahl's stress factor

Remains same
Increases linearly
Decreases linearly
Increases exponentially

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Machine Design
In cross or regular lay ropes

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

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