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Electrical Machines

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

 Conservator tank.
  Commutator.
 Tap changer.
 Radiator.

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Electrical Machines
What type of dielectric material is used in capacitors used for fans and for power factor correction?

  Oil impregnated paper.
  Vacuum.
  Mica.
  Glass.

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Electrical Machines
The flux involved in the emf equation of a transformer has

 rms value.
  maximum value.
 average value.
 total value.

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Electrical Machines
Skewing of cage rotors offers the following advantages

  less noise.
  uniform torque.
  locking tendency is reduced.
  all of below.

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Electrical Machines
What type of connection is made in between the inter-pole and the field winding?

  Series.
 Parallel.
 Compound.
 None of the options.

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Electrical Machines
Which of the following motor has the highest power factor at full load?

 Resistance split phase
 Capacitor start
 Shaded pole
 Capacitor run

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