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Electrical Machines

Electrical Machines
Normally for the design of transformer the ambient temperature is taken as

 32°C.
 35°C.
 27°C.
  45°C.

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Electrical Machines
In dc machines, the space distribution of air-gap flux density wave at no load is

 sinusoidal
 flat-topped
 rectangular
 co- sinusoidal

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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
 96 V
 384 V
 768 V

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Electrical Machines
The current drawn by a 220 V DC series motor of armature resistance 0.5Ω and back back emf 200 V is

 400 A.
 440 A.
 44 A.
  40 A.

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Electrical Machines
Which of following motor is preferred for belt conveyor?

  Slip ring induction motor.
  Universal motor.
  Synchronous motors.
  Reluctance motor.

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Electrical Machines
Ward Leonard control provides speed control

 in one direction only.
 below rated speed.
 in both direction.
 above rated speed.

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MORE MCQ ON Electrical Machines

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