If a D.C. shunt motor is working at full load and if shunt field circuit suddenly opens
A)this will make armature to take heavy current, possibly burning it
B)this will result in excessive speed, possibly destroying armature due to excessive centrifugal stresses
C)nothing will happen to motor
D)motor will come to stop

Question

Quizplus · Accepted Answer

If the shunt field circuit suddenly opens, the field current will drop to zero and the motor will lose its excitation. This will cause the armature current to increase dramatically, possibly burning out the armature.

If a DC Shunt Motor Is Working at Full Load and If