Why the Voltage rises when Leading Power Factor is occurs?

shobhit bansal

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• Apr 3rd, 2009

When there is a case of leading power factor, that means synchronous generator works in over excitation mode, reactive power will be generated, and as we know that change in voltage is directly prop...

SURAJTHEGREAT

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• Mar 18th, 2009

We know flux is 90 degree ahead of voltage...If leading p.f. load is connected,the armature flux and main flux aid each other,Bcoz current(field current=flux)is 90 degree ahead of voltage. (Thus 2 fluxes aid each other)and since voltage propotional to flux,voltage increases..

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We know synchronous machine run at a constant speed.Consider Synchronous motors, If you load the machine, will the speed reduce? If it does so, then it prohibits the property of synchronism. So Explain What is happening?

maverick

• Mar 28th, 2015

In synchronous machine speed always remains constant even when load on it changes. For increased load motor develops increased torque because of rotor falling out of phase by large angle delta; which...

bittu123

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• Nov 10th, 2011

Even if you increase the load on synchronous motor upto specified limit, SPEED will NEVER fall down(unlike dc or induction motor), while maintains synchronous speed. BUT why??? It takes more current ...

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