Theory of Machine
Length of arc of contact is given by

Arc of approach / Arc of recess
Arc of approach + Arc of recess
Arc of approach × Arc of recess
Arc of approach - Arc of recess

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Theory of Machine
The steering of a ship means

None of these
Turning of a complete ship in a curve towards right or left, while it moves forward
Rolling of a complete ship sideways
Movement of a complete ship up and down in vertical plane about transverse axis

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