Question

1, Explain the relation between reactive and real power in squirrel cage induction motor with load...

1, Explain the relation between reactive and real power in squirrel cage induction motor with load and with no load. ( just explain no need formulas)
2, in squirrel cage induction motor with load , what is the relation of Torque -speed curve , line current vs rated load and slip Vs rated load.
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Answer #1

Solution 1.- Relation between real and reactive power in squirrel cage induction motor varies with load. AT no load reactive power required by the shunt branch to set up field and real power requirement is low at no load. Due to reactive power high and real power low the power factor of the induction motor is very low at no load.

At load real power requirement increased to match the load torque and that time some more reactive power required compared to no load for the series reactive component. Due to high real power at load and reactive power requirement is low compared to no load. the power factor of the squirrel cage induction motor is high.

solution 2

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