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Electrical Machines

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

 low.
  zero.
 positive.
 negative.

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Electrical Machines
Series booster is a

 shunt wound DC generator.
  series wound DC generator.
 separately excited DC generator.
 permanent magnet DC generator.

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Electrical Machines
Which of the following motor used in hair dryers?

  Synchronous motors.
  Split phase IM.
  Cage induction motor.
  Shaded pole IM.

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Electrical Machines
The direction of rotation of a DC compound motor can be reversed by interchanging

 shunt field connections.
 series field connections.
 armature or field connections.
 armature connections.

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Electrical Machines
If a shunt generator delivers 100 A at 200 V, and the resistances of the shunt field and armature are 100 ohms and 0.01 ohms respectively, the generator emf will be

  series.
  any one of the connection.
  parallel.
  no resistance is connected.

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Electrical Machines
A 3-phase, 50Hz, 4 pole induction motor is running at 1440 rpm and rotor input power is 2KW. Find the rotor output power?

 2000W
 1820W
 1920W
 1450W

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