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Electrical Machines

Electrical Machines
Maximum power developed depends on

 load angle
 reactance
 both 1and 2
 voltage

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Electrical Machines
The air gap between stator and the rotor of the 3 - φ induction motor is kept

  air gap does not matter.
  as small as possible.
  as wide as possible.
  depends on the material of stator and the rotor.

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Electrical Machines
Flux density under leading pole tips in case of generator will

 decrease
 increase
 either increase or decrease
None of these

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Electrical Machines
The field divertor resistance for a DC series motor is of order of

 100 Ω
 50 Ω
 10 Ω
 0.1 Ω

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Electrical Machines
Which of the DC Motor use flywheel?

 Shunt motor.
 Cumulatively compound motor.
 Series motor.
 Differently compared motor.

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Electrical Machines
In dc machines, the field-flux axis and armature-mmf axis are respectively along

 direct axis and interpolar axis
 quadrature axis and direct axis
 direct axis and indirect axis
 quadrature axis and interpolar axis

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