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A 3-phase, 400 V, 5 kW, star connected synchronous motor having an internal reactance of 10 is operating at 50% load, unity p.f. Now,
A 3-phase, 400 V, 5 kW, star connected synchronous motor having an internal reactance of 10 is operating at 50% load, unity p.f. Now, the excitation is increased by 1%. What will be the new load in percent, if the power factor is to be kept same? Neglect all losses and consider linear magnetic circuit. (A) 67.9% (B) 56.9% (D) 50% (C) 51%
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Vector Mechanics for Engineers Statics and Dynamics
Authors: Ferdinand Beer, E. Russell Johnston Jr., David Mazurek, Phillip Cornwell, Brian Self
11th edition
73398241, 978-0073398242
