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Electrical Machines

Electrical Machines
Hysteresis loss is proportional to

  f.
 f3.
 f1.5.
 f2.

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Electrical Machines
Which of the following induction motor has maximum speed?

 8 pole.
 4 pole.
  2 pole.
 6 pole.

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Electrical Machines
Commutator pitches of duplex and simplex lap windings are respectively

 4 and 2
 4 ang 1
 2 and 2
 2 and 1

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Electrical Machines
In an induction motor, air gap power is 10 Kw and mechanically developed power is 8 Kw. What are the rotor ohmic losses?

 0.5Kw
 3KW
 1.5KW
 2KW

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Electrical Machines
stepped cores are used in transformers in order to reduce

 reluctance of core.
 volume of iron.
 volume of copper.
 iron loss.

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Electrical Machines
If we increase the rotor reactance value, the maximum torque will

 decrease
None of these
 not changed
 increase

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MORE MCQ ON Electrical Machines

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