"By adding external resistance to rotor till it becomes equal to rotor reactance, the maximum torque can be achieved at start"

Q.  “By adding external resistance to rotor till it becomes equal to rotor reactance, the maximum torque can be achieved at start”. This statement holds for
- Published on 23 Oct 15

a. Slip ring induction motor
b. Squirrel cage induction motor
c. Both a and b
d. Neither a nor b

ANSWER: Slip ring induction motor

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