The speed of a dc shunt motor can be raised above its rated value by
Inserting an additional resistance in the field circuit
The speed of a dc shunt motor can be raised above its rated value by inserting an additional resistance in the field circuit.
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