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

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
The Ackerman steering gear is most economical
Both (A) and (B)

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Theory of Machine
The maximum fluctuation of speed is the

Variations of speed above and below the mean resisting torque line
Difference of the maximum and minimum speeds
Sum of maximum and minimum speeds
Difference of minimum fluctuation of speed and the mean speed

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