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ELECTRICAL MACHINES

Electrical Machines
Drop in speed from no load to full load is very high in

 Cummulative compound motor with interpoles.
 Series motor with interpoles.
 Shunt motor with interpoles.
  Series motor without interpoles.

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Electrical Machines
For standing a DC motor a starter is required because

  it limits the starting current to a safe value.
None of these
  It starts the motor.
  it limits the speed of the motor.

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Electrical Machines
To get the speed of DC motor is more than normal without wastage of electrical energy _____________ is used.

  None of above.
  Rheostatic control.
  Any of above method.
  Ward Leonard control.

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Electrical Machines
The three point starter is used for

  Shunt, compound and series motor.
  Shunt motor as well as compound motors.
  Series motor.
  Shunt motor.

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Electrical Machines
Ward Leonard control is provides speed control

  Above rated speed.
  Below rated speed.
  In both direction.
  In one direction only.

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