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Electrical Machines

Electrical Machines
Larger values of air flux density is taken while designing IM for

  none.
  larger bore diameter.
  both.
  larger output.

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Electrical Machines
An ideal DC generated is one that has _____________ voltage regulation.

 low.
 negative.
 positive.
  zero.

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Electrical Machines
The maximum possible speed at which an alternator can be driven to generate 50 Hz and 4000 V is

  3000 rpm.
  1500 rpm.
  3600 rpm.
  4000 rpm.

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Electrical Machines
Capacitor start capacitor run provides

  high power factor only.
  high staring torque only.
  high staring torque and high power factor.
  none.

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Electrical Machines
The inertia constant H of a synchronous condenser is

  none of these.
 greater than that of turbo alternator.
 equal to that of the effective length of the line.
 greater than that of hydro generator.

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Electrical Machines
Speed of DC motor can be controlled by varying

 applied voltage.
 its flux oer pole.
 all of these.
 resistance of armature culture.

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MORE MCQ ON Electrical Machines

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