Page 21 - Solutions Manual to accompany Electric Machinery Fundamentals

SOLUTION The magnetizing intensity applied to this core is

H  F  Ni  200 t 0.3 A   394 A t/m


l c c  l 6 in 0.0254 m/in 
From the magnetization curve, the flux density in the core is
B  1.35 T

The total flux in the core is

   BA  1.35 T 0.25 in 2    0.0254 m   2  0.000218 Wb
 1 in 

1-16. The core shown in Figure P1-2 has the flux  shown in Figure P1-12. Sketch the voltage present at the
terminals of the coil.

15