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Electrical Machines

Electrical Machines
When flux density is constant in a transformer, hysteresis loss varies as

 V²
 V
 f
 f²

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Electrical Machines
What is the full form of MNP?

  Magnetic neutral pole.
  Magnetic neutral plane.
  Magnetic field neutral plane.
  Magnetic field neutral pole.

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

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

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Electrical Machines
In double cage induction motor, the outer cage offers

  low resistance and low reactance.
  low resistance and high reactance.
  high resistance and high reactance.
  high resistance and low reactance.

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Electrical Machines
At stand still condition the value of slip is

 finite value
 infinite value
 1
 0

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Electrical Machines
What is the highest possible speed of turbo alternators?

 3000 rpm
 4000 rpm
 1500 rpm
 1000 rpm

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MORE MCQ ON Electrical Machines

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