Answer / jords

it depend on what kind of load.
but the real thing is,
as we increase frequency,the RPM of the motor also
increases.
high frequency can cause motor burning.
low frequency can reduce speed of the motor.

Answer / shinde

Assume motor having torque of 'X' Nm is of frequency 50Hz and voltage of 400V . if the frequency of the motor increased to 60Hz , in order to achieve same torque the V/F ratio should be same in either case. so motor may take more current in higher frequency to achieve same torque.

what types of fault occurred in transmission line ? which protection function senses the fault?

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What are gain margin and phase margin?

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Why current transformer is earthed??

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1.What is the range of stator resistance of 3-phase induction motor? 2.Two electrically operated vibro motors are foxed in parallel direction in vibrating feeders. what is the direction of both vibro motors?

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