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Electrical Machines

Electrical Machines
In an auto transformer, for what value of turn ratio, power transferred by inductively and conductively are same?

 0.5
 any of the above
 1
 0

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Electrical Machines
Which of the following relation is correct?

None of these
 Xd = Xq.
 Xd < Xq.
 Xd > Xq.

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Electrical Machines
A generator may loose residual magnetism due to

  heating.
  any of these.
  over excitation.
  vibrations.

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Electrical Machines
Two generators G1 and G2 are to be operated in parallel to deliver a total current of 60 A. Generator one has a terminal voltage of 280 V on no load and 240 V when supplying 40 A current. Similarly the second generator has a voltage of 300 V when on no load and 240 V when supplying of 50 A of current. The output voltage of each generator will be

  256.4 V.
 238.2 V.
 271.7 V.
 240 V.

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Electrical Machines
Which 1 - Φ motor does operate at high power factor?

  Capacitor start.
  Split phase.
  Capacitor run.
  Shaded pole.

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Electrical Machines
Hysteresis loss will depends on

 f²
 f1.6
 f³
 f

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