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Electrical Machines

Electrical Machines
In DC generator on no-load, the air gap flux distribution in space is

  sinusoidal.
 triangular.
  pulsating.
  flat topped.

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Electrical Machines
Series field consists of--------number of turns and ---------- conductors respectively

 large and thick
 large and thin
 less and thick
 less and thin

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Electrical Machines
The flux is maximum in the following part of a DC motor:

 under trailing pole tip.
 under leading pole tip.
 pole core.
 under the interpole.

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

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

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Electrical Machines
The emf induced in a conductor rotating in a bipolar field is

 both of above.
None of these
 AC.
 DC.

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Electrical Machines
Regenerative braking is not found in which motor?

 DC shunt.
  DC series.
 DC compound.
 Induction motor.

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