Question: A 1 0 0 - HP 4 4 0 v , 0 . 8 pf - leading, Delta connection synchronous motor has an armature resiistance

A 100-HP 440 v,0.8 pf-leading, Delta connection synchronous motor has an armature resiistance of 0.3 and a synchronous reactance of 4.0. Its efficiency at full load 96%
a. What is the input power to the motor at rated conditions
b. What is the reactive power consumed by or supplied by the motor at rated conditions?
c. If EA is decreased by 10% percent, how much reactive power will be consumed by or supplied by the motor, here we ignore the resistance of armature

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