Assume an overall efficiency of the motor and gears

Posted on 2014-01-20 12:05:00 in Engineering by BENTON.%

A motor is being self started against a resistance torque of 60 N – m and at each start, the engine is cranked at 75 r.p.m for 8 seconds. For each start, energy is drawn from a lead from acid battery. If the battery has a capacity of 100 wh, calculate the number of starts that can be made with such a battery. Assume an overall efficiency of the motor and gears as 25%.

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