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Electrical Machines

Electrical Machines
We can apply source transformation to voltage source when a resistance is connected to it in

  13 HP.
 14 HP.
  10 HP.
 15 HP.

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Electrical Machines
Voltage regulation can be determined by which of the following?

 MMf method.
 Synchronous impedance method.
 ZPF method.
All of these

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Electrical Machines
If the number of rotor slots is equal to number of stator slots, then motor refuses to start. Hence it is known as

  crawling.
  cogging.
  relative speed.
  air gap.

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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

 8 KW.
  2 KW.
 10 KW.
 0.

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Electrical Machines
The effect of ------------------ on main field flux is armature reaction?

 armature mmf
 armature current
All of these
 armature flux

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Electrical Machines
In synchronous motor the torque is proportional to

 Power P
 1/P
 P²
 1/P²

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MORE MCQ ON Electrical Machines

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