a 3 phase, 50 hz induction motor with its rotor star-connected give 500 V at standstill between

a 3 phase, 50 hz induction motor with its rotor star-connected give 500 V at standstill between slip rings on open circuit. calculate the current and power factor in each phase of the rotor windings at standstill when joined to a star connected circuit, each limb of which has a resistance of 10 ohms and an inductance of 0.03 henry. the resistance per phase of the rotor windings is 0.2 ohms and inductance 0.03 henry. calculate also the current and power factor in each rotor phase when the rings are short circuited and the motor is running with a slip of 4 percent.


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