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Electrical Machines

Electrical Machines
Which of the following is not a part of transformer?

  Commutator.
 Radiator.
 Conservator tank.
 Tap changer.

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Electrical Machines
Induction motors have the advantage of

  all of below.
  less maintenance.
  less cost.
  simple in construction.

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Electrical Machines
In a DC Shunt Motor if the load current increases then field flux

 remains constant.
 decreases.
 increases.
 decreases

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Electrical Machines
In DC generator, brushes are always placed along

  magnetic neutral axis.
 geometrical neutral axis.
 armature axis.
 load axis.

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Electrical Machines
To get the speed of DC motor is more than normal without wastage of electrical energy _____________ is used.

  Ward Leonard control.
  Rheostatic control.
  Any of above method.
  None of above.

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Electrical Machines
An auto transformer having a transformation ratio of 0.8 supplies a load pf 10 KW. The power transfered inductively from the primary to secondary is

 10 KW.
 8 KW.
  2 KW.
 0.

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