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Electrical Machines

Electrical Machines
In DC generator on no-load, the air gap flux distribution in space is

  flat topped.
 triangular.
  sinusoidal.
  pulsating.

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Electrical Machines
In star-delta starting of squirrel cage induction motor compared to DOL starting the starting current and torque are

 1/√3, 1/√3
 1/3, 1/3
 1/3, 1/√3
 1/√3, 1/3

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
In shaded pole induction motors, the flux moves from ------------- region to ----------------- region respectively?

 shaded, shaded
 unshaded, unshaded
 unshaded, shaded
 shaded, unshaded

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Electrical Machines
A 8-pole, DC generator has a simplex wave-wound armature containing 32 coils of 6 turns each. Its flux per pole is 0.06 Wb. The machine is running at 250 rpm. The induced armature voltage is

 192 V
 768 V
 384 V
 96 V

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Which type of single phase induction motor is having the highest power factor at full load ?

 Split phase type.
  Capacitor run type.
 Capacitor start.
 Shaded pole type.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
If input of a transformer is square wave the output will be

 triangular wave.
 square wave.
 sine wave.
  pulsed wave.

ANSWER DOWNLOAD EXAMIANS APP
MORE MCQ ON Electrical Machines

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