Page 83 - Solutions Manual to accompany Electric Machinery Fundamentals

SOLUTION Since τ ind  kB R  B , the induced torque is clockwise, opposite the direction of motion. The
net
machine is acting as a generator.
3-9. The flux density distribution over the surface of a two-pole stator of radius r and length l is given by
B  B cos  m t    (3-37b)
M
Prove that the total flux under each pole face is
 2rlB M

SOLUTION The total flux under a pole face is given by the equation
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