ELECTRICITY FOR TRADES
3rd Edition
ISBN: 9780078118630
Author: Petruzella
Publisher: RENT MCG
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Textbook Question
Chapter 4.2, Problem 2RQ
What is the basic unit used to measure electric power?
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2. a) Given the circuit shown below in figure P2, compute the inductor current, iL(t), for t≥ 0 utilizing the
generalized equation method presented in lecture. Assume the switch shown in figure P2 is ideal and
opens in zero time at t=0[s]. The current and voltage conventions shown must be used in the analysis
to receive any credit.
b) Use your answer to part 2(a) above and the relationship between the inductor current, iL(t), and the inductor
voltage, VL(t), shown below in equation P2 to compute VL(t) for t≥0.
Equation P2: V(t)
= L
di(t)
dt
+
Vs = 100[V]
t=0
I₁
R₁ = 100[2]
w
V₁
A
||iz(t)
V2(t)
R₂ = 200[2]
↓iL(t)
|
iz(t)
V3(t)
R3 = 200[2]
VL(t)
L = 1[H]
B
Figure P2
I WANT THIS PART BELWO ONLY2. For the system above the input is v(t) = 2 + 4 sin(0.25t +20°) + 5cos (t -25°)a) Determine the output signal vo (t).b) Determine the input normalized power pertaining to vt(t)c) Determine the percent of input normalized power that is transferred to the outputVo(t)
Chapter 4 Solutions
ELECTRICITY FOR TRADES
Ch. 4.1 - What is the practical unit of electric charge?Ch. 4.1 - Prob. 2RQCh. 4.1 - Prob. 3RQCh. 4.1 - Explain what a current flow of 1 ampere can be...Ch. 4.1 - Account for the fact that electric current travels...Ch. 4.1 - Prob. 6RQCh. 4.1 - Prob. 7RQCh. 4.1 - Prob. 8RQCh. 4.1 - Prob. 9RQCh. 4.1 - Prob. 10RQ
Ch. 4.1 - Prob. 11RQCh. 4.1 - Prob. 12RQCh. 4.1 - What is the cause and effect of resistance?Ch. 4.1 - When using an ohmmeter to measure resistance, what...Ch. 4.1 - Convert the following data: a. 12,000 A to kA b....Ch. 4.1 - Prob. 16RQCh. 4.2 - Define electric power.Ch. 4.2 - What is the basic unit used to measure electric...Ch. 4.2 - A toaster draws 8 amperes when connected to a...Ch. 4.2 - Prob. 4RQCh. 4.2 - Prob. 5RQCh. 4.2 - Prob. 6RQCh. 4.2 - Prob. 7RQCh. 4.2 - Compare a closed and an open electric circuit.Ch. 4.2 - Prob. 9RQCh. 4.2 - What does Ohms law tell us about current flow in a...Ch. 4.2 - Ohms law is applied to a circuit using what three...Ch. 4.2 - Prob. 12RQCh. 4.2 - Prob. 13RQCh. 4.2 - Prob. 14RQCh. 4.2 - Prob. 15RQCh. 4.2 - Prob. 16RQCh. 4.2 - Prob. 17RQCh. 4.2 - Prob. 18RQ
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