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why frequency should be constant?

Answer Posted / nithi

In the power system most of the loads are induction motor
(nearly about 60%).so,apply this question for induction
motor.

For rated voltage,

below rated freq.: speed variation,high intake
current,over heating,insulation failure,core
saturation,harmonics production.

above rated freq.:drastic reduction in torque
production,speed variation.
so,frequency should be maintained constant.

Is This Answer Correct ?    8 Yes 5 No



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