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Electrical Machines

Electrical Machines
In an induction motor, the no-load slip is generally equal to

  less than 1 %.
 4 %.
  zero.
 1.5 %.

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Electrical Machines
A shaded pole single phase induction motor can be used for

 personal computers as cooling fan
 tape recorders
 food mixers
 wet grinders

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Electrical Machines
On which of the following factor/factors the speed of a DC motor depends upon?

 Applied voltage.
 Armature current.
 Field flux.
 All of these.

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Electrical Machines
In case the conditions for maximum power for DC motor are established, the efficiency of the motor will be

 Around 90 %
 Around 100 %.
 Less than 50 %
 Any where between 75 % and 90 %.

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Electrical Machines
The stator core of a 3 - Φ induction motor is laminated in order to reduce the

  weight of the stator.
  eddy current loss.
  hysteresis loss.
  both of the above.

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Electrical Machines
What is power factor of a 3 - φ induction motor at no load?

  Same as full load.
  High.
  Low.
  Equal to 1.

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MORE MCQ ON Electrical Machines

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