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QUESTION 3 A 30 star connected 6-pole 60 Hz induction motor draws 16.8A at a power factor of 80% lagging with the following parameters of per phase approximate equivalent circuit referred to the stator. Ri = 0.24 Ω R₂ = 0.14 02 Ω Χ, = 0.56 Ω 1 i) The speed in rpm ii) The rotor current iii) The copper losses iv) The rotor input power v) The output torque X,= 0.28 Ω 2 X = 13.25 Q m The total friction, windage, and core losses may be assumed to be constant at 450W. For a slip of 2.5% and when the motor is operated at the rated voltage and frequency, calculate