EBK ELECTRIC CIRCUITS
10th Edition
ISBN: 9780100801790
Author: Riedel
Publisher: YUZU
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Chapter 1, Problem 15P
a.
To determine
Find the name of car that has dead battery.
b.
To determine
Find the value of energy transferred to dead battery if the value of time is
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b)
Another waveform g(t) is defined by
=0
t≥0, α>0
otherwise
g(t)= At exp(-at)
and is plotted in Figure 1 (for representative values of 4 = 1 and α = 1).
g(t)
0.4T
0.3+
0.2
0.1+
2
0
2
Figure 1
8
c)
Show that its amplitude spectrum is |G(@)| = -
A
(a²+0²)²
Describe briefly, with the aid of labelled sketches, how changing a affects
the waveform in both the time and frequency domains.
d) Deduce the Fourier transform H(@) of h(t) = g(t)+g(t+b)+g(t-b) and
calculate its DC amplitude H(0).
"I need an expert solution because
the previous solution is incorrect."
An antenna with a radiation impedance of 75+j10 ohm, with 10 ohm loss resistance, is
connected to a generator with open-circuit voltage of 12 v and an internal impedance of 20 ohms via
a 2/4-long transmission line with characteristic impedance of 75 ohms.
(a) Draw the equivalent circuit
(b) Determine the power supplied by the generator.
(c) Determine the power radiated by the antenna.
(d) Determine the reflection coefficient at the antenna terminals.
--3/5-
b) g(t) =
3
1441
g(t+mT) = g(t)
-31
(i) Complex fourier coefficient Cn.
(ii) Complex fourier coefficients - real fourier coefficient (the first 5 non-zero terms)
of
(iii) sketch the amplitude spectrum g(t)
|Cal against n. n= -3 ⇒n=3 (labelling the axis).
Chapter 1 Solutions
EBK ELECTRIC CIRCUITS
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