Question
Synchronous motors are generally not self-starting because the direction of rotation is not fixed the direction of instantaneous torque reverses after half cycle starters
Synchronous motors are generally not self-starting because the direction of rotation is not fixed the direction of instantaneous torque reverses after half cycle starters cannot be used on these machines O starting winding is not provided on the machines ...The efficiency of a transformer will be maximum when copper losses hysteresis losses = hysteresis losses = eddy current losses O eddy current losses = copper losses O copper losses = iron losses O
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Electric Machinery
Authors: Charles Kingsley, Jr, Stephen D. Umans
6th Edition
71230106, 9780073660097, 73660094, 978-0071230100
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