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Electrical Machines

Electrical Machines
DC shunt motors are suitable for

  All of this.
 Lathes.
 Centrifugal pumps
 Blowers and fans.

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

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

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Electrical Machines
The armature shaft must be able to with stand

 Bending moment due to weight of the armature.
All of these
 Any unbalanced magnetic pull on the armature core.
 Twisting stains due to transmission of torque.

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Electrical Machines
Capacitor fitted with ceiling / table fans is of the value of

  2 - 3 µF.
  1 - 2 µF.
 0.1 µF.
 5 - 10 F.

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Electrical Machines
Equalizer rings are used in which of the followings?

 wave winding
 both 1 and 2
 lap winding
None of these

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Electrical Machines
For a specific open-circuit voltage of a DC generator, the short-circuit electric current will be maximum when it is

  shunt connected.
  separately excited.
 differentially compounded.
  cumulatively compounded.

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MORE MCQ ON Electrical Machines

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