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If ‘V’ is vehicle speed(in metres/min) and ‘R’ is radius of driving wheel(in metres) then the rpm of the driving wheel is given by _______

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If ‘V’ is vehicle speed(in metres/min) and ‘R’ is radius of driving wheel(in metres) then the rpm of the driving wheel is given by _______

(a) rpm = V/2πR

(b) rpm = 2πV/R

(c) rpm = πR/V

(d) rpm = πV/R

This question was posed to me at a job interview.

This question is from Performance of an Automobile in portion Introduction of Automobile Engineering

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Correct choice is (a) rpm = V/2πR

The explanation is: The rpm of the driving wheel can be expressed as rpm = V/2πR.

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