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Electrical Machines

Electrical Machines
Which of the following relation is correct?

 Xd > Xq.
None of these
 Xd = Xq.
 Xd < Xq.

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Electrical Machines
In a transformer the magnetic coupling between the primary and secondary winding can be increased by

 using transformer oil of better quality.
 using the magnetic core of low reluctance.
 using soft material for winding.
 increasing the number of turns.

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Electrical Machines
In above question, the output power delivered by generator G1 and G2 will be

 5.7 kW, 8.7 kW.
 9.6 kW, 12 kW.
 9.3 kW, 9.3 kW.
  6.3 kW, 9.3 kW.

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Electrical Machines
Which of the following motors has low ratings only?

 Shaded pole
 Capacitor run
 Capacitor start
 Resistance split phase

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Electrical Machines
Which of the following is/are not a self starting motor?

 both 1 and 2
None of these
 3-phase induction motor
 1-phase induction motor

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Electrical Machines
Synchronous reactance of an alternator represents

 armature reactance and leakage reactance
All of these
 field winding reactance
 a reactance operating at synchronous speed

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