Machine Design
A double strap butt joint (with equal straps) is

Any one of these
Either in single shear or double shear
Always in single shear
Always in double shear

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Machine Design
When the belt is transmitting maximum power,

None of these
The tension in tight side is thrice the centrifugal tension
The tension in tight side is twice the centrifugal tension
The tension in slack side is equal to the centrifugal tension

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