Texts: Use the information below to answer questions 1 to 3: A 415-V, 3-phase, 50-Hz, star-connected induction motor has the following parameters in ohms per phase: R = 0.04, X = 0.15. R = 0.05, X = 0.15. Ignore the magnetizing branch.
1. Calculate the starting current in amps.
2. Calculate the starting torque in newton-meters, if the synchronous speed is 104.72 rad/s.
3. Calculate the value of the resistance that should be added to the rotor circuit to increase the starting torque to maximum.
