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Electrical Machines

Electrical Machines
If we increase the rotor reactance value, the maximum torque will

 increase
 not changed
None of these
 decrease

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Electrical Machines
The voltmeter connected across a generator reads voltage same at no load and at full load (rated). The generator is of the type

  short - shunt generator.
  level compound.
 series generator.
  shunt generator.

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Electrical Machines
If the field connection of a DC Shunt Motor is changed then

 it will run in opposite direction.
 motor will not run.
 it will run in same direction by slowly.
 it will run in same direction.

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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

  2 KW.
 10 KW.
 8 KW.
 0.

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Electrical Machines
Alternator operates on the principle of

  mutual induction.
  self or mutual induction.
  self induction.
  electromagnetic induction.

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Electrical Machines
Armature coil is short circuited by brushes when it lies

  along field axis.
  in none of above positions.
  in any of above positions.
  along neutral axis.

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MORE MCQ ON Electrical Machines

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