D.C. Motors

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
Answer: Option A.
Explanation: 

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