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A 220 V, DC shunt motor is operating at a speed of 1440 rpm. The armature resistance is 1.02 and armature current is 10
A 220 V, DC shunt motor is operating at a speed of 1440 rpm. The armature resistance is 1.02 and armature current is 10 A. of the excitation of the machine is reduced by 10%, the extra resistance to be put in the armature circuit to maintain the same speed and torque will be (A) 1.79 2 (C) 18.9 (B) 2.19 (D) 3.1
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Electric Machinery
Authors: Charles Kingsley, Jr, Stephen D. Umans
6th Edition
71230106, 9780073660097, 73660094, 978-0071230100
