Electric Motor Control
Electric Motor Control
10th Edition
ISBN: 9781133702818
Author: Herman
Publisher: CENGAGE L
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Chapter 42, Problem 10SQ

Why is a control relay (CR1) used in Figure 42–6?

Chapter 42, Problem 10SQ, Why is a control relay (CR1) used in Figure 426? FIG. 426 Line diagram for automatic operation of

FIG. 42–6 Line diagram for automatic operation of synchronous motor using polarized field frequency relay.

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The values ​​of the circuit elements in the circuit shown in the figure are given below.The initial energies of the capacitors and the coil are zero.Accordingly, how many volts is the voltage vo at t=0.55 seconds? vs(t) = 2cos(4000t)u(t) VR = 19 ohmL = 20 HC1 = 1/5 FC2 = 1/2 F
could you please show steps on how the answer was derived. Vo(t)=3.922 cos(1000t-71.31')V
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