Q.

The shunted armature speed control  method for dc shunt motor is 

  • ALess expensive 
  • BLess wasteful
  • CSuitable for rapidly changing loads
  • DNone of the above
Correct Answer : (C)

Suitable for rapidly changing loads

Hints :

The shunted armature speed control  method for dc shunt motor is Suitable for rapidly changing loads.

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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 

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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

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