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Electrical Machines

Electrical Machines
The emf induced in a conductor rotating in a bipolar field is

 AC.
 both of above.
 DC.
None of these

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Electrical Machines
A compound motor has

  only series field winding.
  only shunt field winding.
  both shunt and series field winding.
  tertiary winding.

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Electrical Machines
DC series motor is best suited for electric traction as

 It runs at very high speed at light load.
 It consume less power.
  It develops high starting torque.
 It is cheaper in cost.

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

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

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Electrical Machines
The use of higher flux density in the transformer design

 reduces the weigh per KVA
 increases the weigh per KVA
None of these
 has no relation with the weight of transformer

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Electrical Machines
The efficiency of a transformer is mainly dependent on

 dielectric losses.
 copper losses.
 stray losses.
 core losses.

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MORE MCQ ON Electrical Machines

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