A surface-mount permanent-magnet synchronous machine, which has the following ratings and parameters, is running as a motor in maximum torque per ampere operation mode at 800 r/min. The torque of the machine is 10 N-m, and the drive system is in the steady state.
(1) Calculate the angular frequency of the stator voltage, ωe(red/s).
(2) Calculate the line-to-line voltage in rms and the line current in rms.
(3) Calculate the power factor at the terminal of the machine.
(4) Calculate the load angle d.