A 460-V d.c. motor drives a hoist which raises a load of 100 kg with a velocity of 15 m/s. Calculate :(i) The power output of the motor assuming the hoist gearing to have an efficiency of 0·8.(ii)...

A 460-V d.c. motor drives a hoist which raises a load of 100 kg with a velocity of 15 m/s. Calculate : (i) The power output of the motor assuming the hoist gearing to have an efficiency of 0·8. (ii) The motor current, assuming the motor efficiency to be 0·75.