Theory of Machine
Transmission of power from the engine to the rear axle of an automobile is by means of

Hooke's joint
Worm and wheel method
Crown gear
Compound gears

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Theory of Machine
In a single slider crank chain

One is a turning pair and three are sliding pairs
Each of the four pairs is a turning pair
Two are turning pairs and two are sliding pairs
Three are turning pairs and one is a sliding pair

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