A differentially compounded dc motor is running at rated speed, if the series field winding of the motor gets short circuited, the speed of the motor will
Decrease
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