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Electrical Machines

Electrical Machines
If direct axis reactance Xd and quadrature axis reactance Xq are equal, then reluctance power is

 maximum
All of these
 minimum
 zero

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Electrical Machines
In an auto transformer, for what value of turn ratio, power transferred by inductively and conductively are same?

 1
 0.5
 0
 any of the above

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Electrical Machines
Dynamic braking is employed to brake

 both 1 and 2
None of these
 reversing drive
 non reversing drive

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Electrical Machines
Which of the following is/are effects of armature reaction?

 increase the iron loss
All of these
 increases the design cost
 increase the maintenance and repair

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Electrical Machines
The use of double squirrel cage winding on the rotor provides

 reduced starting torque.
  a large starting torque.
 higher efficiency.
 low noise.

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Electrical Machines
The ___________________ generator has the poorest voltage regulation.

  under-compounded.
  shunt.
  over compounded.
  differential compounded.

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MORE MCQ ON Electrical Machines

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