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Q. |
If a D.C. shunt motor is working at no load and if shunt field circuit suddenly opens |
A. | nothing will happen to th£ motor |
B. | this will make armature to take heavy current, possibly burning it |
C. | this will result in excessive speed, possibly destroying armature due to excessive centrifugal stresses |
D. | motor will run at very slow speed |
Answer» C. this will result in excessive speed, possibly destroying armature due to excessive centrifugal stresses |
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