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Electrical Machines

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

 6
 2
 1
 4

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Electrical Machines
In DC machine shape of main field flux distribution is?

 peaky in nature
 saddle shape
 flat tapped or trapezoidal
 triangular

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Electrical Machines
Rotating magnetic field is produced in an induction motor because of

  stator winding.
  rotor winding.
None of these
  either stator winding or rotor winding.

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Electrical Machines
The rotor electromotive force of the IM is observed to make 100 complete alterations per minute, calculated slip

None of these
 3 %.
 0 .001 %.
  3.33 %.

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Electrical Machines
The slot edges in a DC machine are made of

 Silicon steel.
 Mild steel.
  Fibre.
 Cast iron.

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Electrical Machines
If s is the slip and f is the supply frequency of an induction motor, the frequency of rotor current is given by

  s2.
  sf / 2.
  f / s.
  sf.

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MORE MCQ ON Electrical Machines

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