a) An electrical engineer is assigned to analyze the generator specification that produces a sinusoidal wave with no phase angle. The maximum e.m.f value of the generator is 120V over the period, T = 250 ms. i. Calculate the e.m.f value at coil position 80° and 1.75x rad. Determine the generated e.m.f at t = 150 ms. ii. ii. If the phase angle of the generator shifted to –25° during the measurement process. Evaluate the time, to produce the instantaneous e.m.fof 67V .

a) An electrical engineer is assigned to analyze the generator specification that produces a sinusoidal wave with no phase angle. The maximum e.m.f value of the generator is 120V over the period, T = 250 ms. i. Calculate the e.m.f value at coil position 80° and 1.75x rad. Determine the generated e.m.f at t = 150 ms. ii. ii. If the phase angle of the generator shifted to –25° during the measurement process. Evaluate the time, to produce the instantaneous e.m.fof 67V .

Electric Motor Control

10th Edition

ISBN:9781133702818

Author:Herman

Publisher:Herman

Chapter39: Synchronous Motor Operation

Section: Chapter Questions

Problem 14SQ: Induction motors and welding transformers require magnetizing current, which causes a. lagging power...

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Question

a) An electrical engineer is assigned to analyze the generator specification that produces a
sinusoidal wave with no phase angle. The maximum e.m.f value of the generator is 120V over
the period, T = 250 ms.
i.
Calculate the e.m.f value at coil position 80° and 1.75x rad.
Determine the generated e.m.f at t = 150 ms.
ii.
ii.
If the phase angle of the generator shifted to –25° during the measurement process.
Evaluate the time, to produce the instantaneous e.m.fof 67V .

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