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Electrical Machines

Electrical Machines
Hysteresis loss is proportional to

 f2.
 f3.
  f.
 f1.5.

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Electrical Machines
Scott connections are used for

 three phase to two phase transformation.
 three phase to single phase transformation.
 single phase to three phase transformation.
 any of the above.

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Electrical Machines
The armature MMF waveform of a DC machine is

  rectangular.
  pulsating.
  triangular.
  sinusoidal.

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Electrical Machines
In double cage induction motor, the outer cage offers

  high resistance and low reactance.
  high resistance and high reactance.
  low resistance and high reactance.
  low resistance and low reactance.

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Electrical Machines
In case of DC shunt motor if load is reduced

 The speed will increase in proportion to reduction in load.
  The speed will remains almost constant.
 The speed will increase abruptly.
 DC Shunt Motor

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Electrical Machines
In an induction motor, air gap power is 10 Kw and mechanically developed power is 8 Kw. What are the rotor ohmic losses?

 2KW
 0.5Kw
 1.5KW
 3KW

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MORE MCQ ON Electrical Machines

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