A dc motor is to drive a load which is almost nil for certain part of the load cycle and peak value for short duration. The most suitable dc motor is
Cumulative compound
A dc shunt motor is driving a constant torque load with normal excitation. If the filed current is halved then the motor will run at
A dc shunt motor is driving a mechanical load at rated voltage with normal excitation. If the load torque is increased to double of the normal one, the speed of the motor will