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Question2: Calculate the total machine losses under this condition: A 415V, 50Hz, 2790rpm, 3 phase, star-connected...

Question2: Calculate the total machine losses under this condition: A 415V, 50Hz, 2790rpm, 3 phase, star-connected induction motor has the following equivalent circuit parameters (all referred to the stator winding) : stator leakage reactance X1= 0.3 ohm, stator resistance R1= 0.2 ohms, rotor leakage reactance X2' = 0.3 ohm, rotor resistance R2' = 0.16 ohm, magnetising reactance XM = 12 ohm, core-loss resistance = 150 ohms. Use the simplified equivalent circuit for the following calculations. Under a certain operating condition the motor is operating at rated voltage and the rotor current referred to the stator is 77A. Calculate the total machine losses under this condition.

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