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Electrical Machines

Electrical Machines
Hysteresis loss is proportional to

  f.
 f3.
 f2.
 f1.5.

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Electrical Machines
3rd harmonics are eliminated in induction motor by using

  star connection.
  V connection.
  zig - zag connection.
  delta connection.

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Electrical Machines
The type of DC generator used for arc welding purpose is a

 differentially compounded generator
 cumulatively compounded generator
 series generator
 shunt generator

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Electrical Machines
The speed of a cumulatively compound DC motor can be controlled by varying

 Armature voltage control.
 Shunt field resistance control.
 Armature resistance control.
 Any of above.

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Electrical Machines
With the increases in field excitation of a DC generator, its generated emf

 increases.
  remains constant.
  increases upto a limit and then remains almost constant.
  decreases.

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Electrical Machines
Secondary winding of an auto transformer is also called

 tertiary winding.
  common winding.
 compensating winding.
 damping winding.

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MORE MCQ ON Electrical Machines

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