Theory of Machine
Crowning on pulleys helps

For automatic adjustment of belt position so that belt runs centrally
Increase belt and pulley life
In increasing velocity ratio
In decreasing the slip of the belt

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Theory of Machine
The steering of a ship means

Movement of a complete ship up and down in vertical plane about transverse axis
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

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