An electric vehicle has its wheels driven directly using a 3 phase ,Y connected, 340 V (line to line ),4 pole induction motor powered from a battery bank through a motor speed controller at 50 Hz .The single phase for equivalent circuit parameters for the windings of the motor referred to the stator in (ohms/phase) R1=0.2 R2=0.2 X1=0.3 X2=0.3 .the core losses and the magnetization can be ignored.The total friction and windage losses may be assumed to be constant at 600 W.For a slip of 8%, calculate
the stator current ,power factor,real power and apparent power
the rotor real power losses
the mechanical power output and efficiency
the rotor speed and developed torque