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Electrical Machines

Electrical Machines
In salient pole synchronous machine, the reluctance power varies as

 sinδ
 sin2δ
 cos2δ
 cosδ

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Electrical Machines
Iron losses in a DC machine are independent of variation in

  voltage.
 speed.
  load.
  speed and voltage.

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Electrical Machines
In a DC Shunt Motor if the load current increases keeping the terminal voltage constant, then flux will

 increase.
 remain constant.
 any of the above.
 decrease.

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Electrical Machines
DC machine windings are

 either of these
None of these
 short pitched
 full pitched

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Electrical Machines
In DC series motor the speed is ______________ proportional to the armature current.

 has no relation.
 inversely.
 none of these.
 directly.

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Electrical Machines
If B is flux density, l the length of the conductor and v the velocity of the conductor, then emf is given by

 Bl2v.
 Blv.
 Blv2.
 Bl2v2.

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MORE MCQ ON Electrical Machines

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