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Electrical Machines

Electrical Machines
In a dc machine 6 pole wave winding is used. The number of parallel paths are?

 2
 1
 6
 4

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Electrical Machines
At slip s = 1 torque developed in machine is

  maximum torque.
  electromagnetic torque.
  starting torque.
  none.

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Electrical Machines
Universal motor have which of the following application?

  Domestic pump.
  Traction.
  Food mixer.
  Lift.

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Electrical Machines
Armature resistance control method is used for the _______ ?

 above rated speed
None of these
 both 1 and 2
 below rated speed

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Electrical Machines
The heat generated in the transformer is dissipated mainly by

 radiation.
All of these
 conduction.
  convection.

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Electrical Machines
When Flemings right hand rule to find the direction of induced emf, the thumb points towards

 direction of motion of the conductor.
 opposite to the direction of motion of the conductor.
 direction of flux.
 direction of induced emf.

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