Theory of Machine
In elliptical trammels

All four pairs are turning
Three pairs turning and one pair sliding
One pair turning and three pairs sliding
Two pairs turning and two pairs sliding

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Theory of Machine
The steering of a ship means

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

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