Theory of Machine
Which of the following is an inversion of Single slider crank chain?

Elliptical trammel
Rotary engine
Oldham’s coupling
Beam engine

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Theory of Machine
The Ackerman steering gear mechanism is preferred to the Davis steering gear mechanism, because

The Ackerman steering gear is most economical
Both (A) and (B)
Whole of the mechanism in the Ackerman steering gear is on the back of the front wheels
The Ackerman steering gear consists of turning pairs

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