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Electrical Machines

Electrical Machines
In a dc machine 6 pole wave winding is used. The number of parallel paths are?

 4
 6
 1
 2

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Electrical Machines
In a dc machine 72 number of coils are used. Find the number of commutator segments required?

 72
 36
 37
 74

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Electrical Machines
If the excitation is critical, the power factor of the alternator is

None of these
 lagging power factor.
 leading power factor.
 unity power factor.

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Electrical Machines
The armature resistance of the dc motor is generally of the range

 100 ohm.
  0.5 ohm.
 50 ohm.
  0.1 ohm.

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Electrical Machines
Voltage regulation can be determined by which of the following?

All of these
 Synchronous impedance method.
 MMf method.
 ZPF method.

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Electrical Machines
In above question, find rms line voltage for delta connection?

 399 V.
  230.2 V.
 100 V.
 50 V.

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MORE MCQ ON Electrical Machines

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