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Electrical Machines

Electrical Machines
Compensating winding is placed in the

 armature core
 pole shoe
All of these
 main field

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Electrical Machines
A 440 V, 3-phase, 10 pole and 50 HZ synchronous motor delivering a torque of 50 N-m, delivers a power of

 3000W
 1000W
 500W
 100W

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Electrical Machines
Find the number of poles required, when the frequency is 50Hz and speed of the motor is 500 rpm?

 24
 5
 12
 10

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Electrical Machines
In a DC machine, the angle between the stator and rotor fields is

 90o.
 180o.
 0o.
 dependent upon the load.

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Electrical Machines
Methods of synchronizing of alternator may be done by

  all of these.
 all bright lamp method.
 one dark two bright.
 all dark lamp method.

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Electrical Machines
Which of the following represents the pitch factor?

 sin (α/2)
 Cos α²
 Cos α
 Cos (α/2)

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MORE MCQ ON Electrical Machines

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