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Electrical Machines

Electrical Machines
In an ideal DC generator the regulation is

 high.
 low.
 positive.
 zero.

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Electrical Machines
The condition for maximum running torque is

 0.5 lagging
 R = S.X
 unity
 zero
 0.707 lagging

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Electrical Machines
A voltmeter gives 120 oscillations per minute when connected to the rotor of an induction motor. The frequency is 50Hz. The slip of the motor is

 5%
 25%
 2%
 4%

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Electrical Machines
If a DC Series motor is connected across an AC supply it will

 run at lower speed.
 run at normal speed.
 burn.
 not run.

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Electrical Machines
Which of the following are variable losses?

 eddy current loss
 armature copper loss
 shunt field copper loss
 hysteresis loss

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Electrical Machines
The basic function of a transformer is to change

 the power level
 the power factor
 the frequency
 the level of the voltage

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MORE MCQ ON Electrical Machines

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