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Q8. A. List the factors that determine the starting torque of the three-phase induction motor. How does this torque generally compare with the value of the rated torque?

B. A three phase induction motor is wound for four poles and is supplied from a 50 Hz system. Calculate.

i. The synchronous speed;

ii. The speed of the rotor when the slip is 4 per cent;

iii. The motor frequency when the speed of the rotor is 600 r.p.m