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Electrical Machines

Electrical Machines
In dc motors, under leading pole tips flux density will--------?

None of these
 decrease
 increase
 either increase or decrease

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Electrical Machines
Commonly used starters of cage motor is

  DOL.
  both A and B.
None of these
  star delta.

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Electrical Machines
The principle of dynamically induced emf is utilized in

 choke.
 thermocouple.
 transformer.
 generator.

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Electrical Machines
In a synchronous generator, if mechanical input is increased with constant excitation, the load angle will

 decrease
 either increase or decrease
None of these
 increase

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Electrical Machines
In case of a compensated DC series motor, the compensating winding is provided

  In series with the armature winding.
 In parallel with the armature winding.
 In parallel with the field winding.
 As a separate unit.

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Electrical Machines
In an ideal DC generator the regulation is

 low.
 high.
 zero.
 positive.

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