A 4400V, 3-ph, Y- connected synchronous motor has an effective resistance and synchronous reactance of 3Ω and 19Ω per phase respectively. If the open–circuit generated emf is 4800V between lines,...

A 4400V, 3-ph, Y- connected synchronous motor has an effective resistance and synchronous reactance of 3Ω and 19Ω per phase respectively. If the open–circuit generated emf is 4800V between lines, calculate

The current .........amper *
P.F at Maximum mechanical power
Total Cu losses.........watt *
Input power to motor