If a D.C. shunt motor is working at no load and if shunt field circuit suddenly opens________?
Athis will result in excessive speed, possibly destroying armature due to excessive centrifugal stresses D. motor will run at very slow speed
Bthis will make armature to take heavy current, possibly burning it
Cnothing will happen to the motor
Correct answer
A. this will result in excessive speed, possibly destroying armature due to excessive centrifugal stresses D. motor will run at very slow speed
Explanation
The correct answer is this will result in excessive speed, possibly destroying armature due to excessive centrifugal stresses D. motor will run at very slow speed.