Discussion Forum : Polyphase Induction Motors
Question - . The torque of a rotor in an induction motor under runing condition is maximum
Options:
A .  at the unit value of slip
B .  at the zero value of slip
C .  at the value of the slip which makes rotor reactance per phase
D .  at the value of the slip which makes the rotor reactance half of the rotor resistance
Answer: Option C

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