Page 184 - Solutions Manual to accompany Electric Machinery Fundamentals

grid on;
The resulting plot is shown below:

6-21. A 460-V, 10 hp, four-pole, Y-connected, Insulation class F, Service Factor 1.15 induction motor has the
following parameters
R = 0.54  R 2 = 0.488  X M = 51.12 
1
X = 2.093  X 2 = 3.209 
1
P F&W = 150 W P misc = 50 W P core = 150 kW
For a slip of 0.02, find
(a) The line current I L

(b) The stator power factor
(c) The rotor power factor

(d) The rotor frequency
(e) The stator copper losses P SCL

(f) The air-gap power P AG

(g) The power converted from electrical to mechanical form P conv

(h) The induced torque  ind

(i) The load torque  load
(j) The overall machine efficiency 

(k) The motor speed in revolutions per minute and radians per second
(l) Sketch the power flow diagram for this motor.
178