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Electrical Machines

Electrical Machines
In alternator, the rotary part is

  magnetic field poles.
 none of these.
 core.
 armature.

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Electrical Machines
DC series motor is best suited for electric traction as

 It is cheaper in cost.
  It develops high starting torque.
 It runs at very high speed at light load.
 It consume less power.

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Electrical Machines
In case of DC Shunt Motor, the speed will____ if the voltage increases, neglecting armature saturation.

 be unpredictable.
 decrease.
 increase
 remain the same.

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Electrical Machines
The voltage regulation of a DC generator at full load being zero implies that the generator is

  cumulatively compounded.
 shunt connected.
  deferentially compounded.
  series connected.

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Electrical Machines
Compensating windings is placed in which part of a D.C motor?

  On yoke in the pole faces.
None of these
 On yoke in the inter pole gap.
 On armature.

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Electrical Machines
The functions of inter poles are

 nullify reactance voltage and improve the commutation.
 reduce cross magnetization effect and improve commutation
 both 1 and 2
None of these

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