A six-pole, 60Hz synchronous motor is connected to an infinite bus of 15 kV through a transmission line. The synchronous reactance of the motor is 5Ω, and the inductive reactance of the transmission line is 2Ω. When Ef is adjusted to 16kV (line-to-line), the reactive power at the motor's terminals is zero:
a. Draw the phasor diagram of the system.
b. Calculate the terminal voltage of the motor.
c. Calculate the developed torque of the motor.