A 2-pole wound rotor three-phase asynchronous motor is connected to a three-phase 380 V compound voltage network. The stator and rotor are star connected. The transformation ratio of voltages...

A 2-pole wound rotor three-phase asynchronous motor is connected to a three-phase 380 V compound voltage network. The stator and rotor are star connected. The transformation ratio of voltages coincides with that of currents and is equal to 2.5. The parameters of the equivalent circuit of the motor per phase are: R1 = 0.5 [Ohm], X1 = 1.5 [Ohm], R2 = 0.625 [Ohm], X2 = 1.25 [Ohm], RFE = 360 [Ohm], XM = 40 [ Ohm]. The mechanical losses are 250 [W]. If the slip at full load is 5 [%], it is ordered using the approximate equivalent circuit of the motor:

a) Stator current, rotor current, magnetizing current.

b) Loss of iron, active and reactive power absorbed by the network motor.

c) Internal power and mechanical power in the shaft.