A 3-phase, 381 v, 50-Hz, 50 HP, 4-pole, Y-connected induction motor has its per-phase equivalent circuit when referred to stator side as shown below. The total friction, windage, and core losses can be assumed to be constant at 1000 w, independent of load. For a per-unit slip of 0.05, when the motor is operated at rated voltage and frequency: (a) Find the shaft speed of the motor in RPM and in rad/sec; (b) Calculate the stator input current I1. (c) Find the electrical input power Pin- (d) What are the stator copper losses PsCL- (e) Find the air-gap power PAG- (1) What is the converted power from electrical to mechanical Peonv- (g) Calculate the induced torque tind- (h) Deduce the overall efficiency %n. R1=0.42 jX1=j2 2 jX2=j12 I2 Im R2 jXm3E1 0.12 = j24 2