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Electrical Machines

Electrical Machines
Which of the following is not a part of transformer?

 Conservator tank.
 Radiator.
 Tap changer.
  Commutator.

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Electrical Machines
What is the actual arrangement of series wound generator?

 Armature winding is in series with load.
  Armature and field both are in series with the load.
 Armature and field both are parallel.
 Armature and field both are connected.

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Electrical Machines
Quadrature axis synchronous reactance is the ratio of

 Vmax to Imax.
 Vmax to Imin.
 Vmin to Imin.
 Vmin to Imax.

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Electrical Machines
Ideal value of voltage regulation of a device is?

 a finite negative value
 0
 ∞
 a positive finite value

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Electrical Machines
In salient pole synchronous machine, if direct axis reactance and quadrature axis reactance is equal, then power developed due to reluctance is

 zero
 any of the above
 maximum
 infinite value

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Electrical Machines
Copper brushes in DC machine are used

 where low voltage and high currents are involved.
 where high voltage and low current.
None of these
 in both of above cases.

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MORE MCQ ON Electrical Machines

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