Theory of Machine
When brakes are applied to all the four wheels of a moving car, the distance traveled by the car before it is brought to rest, will be

Minimum
Maximum
None of these
Zero

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Theory of Machine
The contact ratio is given by

(Length of the arc of approach)/cosφ
(Length of the arc of contact)/(Circular pitch)
(Length of the path of approach)/(Circular pitch)
(Length of path of recess)/(Circular pitch)

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