ELECTRICITY FOR TRADES
ELECTRICITY FOR TRADES
3rd Edition
ISBN: 9780078118630
Author: Petruzella
Publisher: RENT MCG
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Chapter 7.2, Problem 20RQ

A 400-W 4-Ω public address speaker is to be fused for overload protection. What maximum current rating of a fuse should be used? (Hint: P = I2R.)

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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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