A 2300V 400hp 60Hz fourpole Yconnected synchronous motor has
     A 2300-V 400-hp 60-Hz four-pole Y-connected synchronous motor has a rated power factor of 0.9 leading. At full load, the efficiency is 90 percent. The armature resistance is 0.4 ft, and the synchronous reactance is 4.4 Ohm. Find the following quantities for this machine when it is operating at full load (P_out = 400 hp):  Output torque tau_ioad  Input power P_im  Rotor speed n_m  E_A (per phase)  P_com   
  
  Solution
solution at the links:
http://postimg.org/image/kngtfdunr/
http://postimg.org/image/50pk20gvr/

