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Electrical Machines

Electrical Machines
The 3 - Φ induction motor with rotor circuit open will

  get over heated.
  make noise.
  not run.
  run normally.

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Electrical Machines
A single phase, 2 KV alternator has an armature resistance of 0.8 ohms and 4.94 ohms respectively. The voltage regulation of the alternator at 100 a load 0.8 loading power factor is

 7%.
  8.9%.
 0%.
 14%.

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Electrical Machines
A DC generator without commutator is a

 DC motor
 AC generator
 induction motor
 DC generator

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Electrical Machines
Series generators are used in which of the following applications?

 Arc welding.
 Air crafts.
All of these
 Used as boosters in dc distribution or transmission.

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Electrical Machines
A three phase induction motor has a synchronous speed of 1500 rpm the machine runs at 1460 rpm at a particular load. The slip at this load is ___________.

 1.5 %.
  30 %.
  2.67 %.
 5 %.

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Electrical Machines
In above question, the output power delivered by generator G1 and G2 will be

 9.6 kW, 12 kW.
  6.3 kW, 9.3 kW.
 5.7 kW, 8.7 kW.
 9.3 kW, 9.3 kW.

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