Determine mechanical power developed


A 40hp, 50Hz, 2300V, 8-pole induction motor is operating at 80% rated load and 6% reduced voltage. The efficiency and power factor for these conditions are 85 and 90% respectively. The combined windage, friction, and stray power losses are 1011W, the rotor conduction losses are 969W, and the stator conductor losses are 1559W. Sketch the power flow diagram, enter values, and determine

(a) mechanical power developed;

(b) shaft speed;

(c) shaft torque;

(d) slip speed;

(e) line current;

(f) core loss