EBK DELMAR'S STANDARD TEXTBOOK OF ELECT
6th Edition
ISBN: 9781305537125
Author: Herman
Publisher: YUZU
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Chapter 20, Problem 2PP
Two capacitors having values of 80
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Answer the following questions:
1- Write radiation resistance (R.) equation for infinitesimal dipole antenna.
2- Write the angle expression form of first null beam width (FNBW) for 2/2 dipole.
3- Define the Directivity of antenna.
4- Write radar cross section equation.
5- Write the input impedance (Z) expression of lossless transmission line.
The input reactance of an infinitesimal linear dipole of length 1/60 and radius
a = x/200 is given by
[In(/2a) - 11
X-120-
tan(kl/2)
Assuming the wire of the dipole is copper with a conductivity of 5.7 × 10'S/m.
determine at f = 1 GHz the
(a) loss resistance
(b) radiation resistance
(c) radiation efficiency
input impedance
Q4- a) For the block diagram of control system shown below with its unit step response. Determine
(K, a,damping ration, Maximum overshoot, Wn, Wd,ẞ, ts, tp, td, tr, and overall transfer function?
C(1) ↑
1.4
1.2
1
0.8
0.6
0.4
0.2
R(s)
E(s)
K
C(s)
$(s + α)
0.05
0.1
0.15
0.2
+2%
-2%
Chapter 20 Solutions
EBK DELMAR'S STANDARD TEXTBOOK OF ELECT
Ch. 20 - 1. What is the dielectric?
Ch. 20 - List three factors that determine the capacitance...Ch. 20 - A capacitor uses air as a dielectric and has a...Ch. 20 - 4. In what form is the energy of a capacitor...Ch. 20 - Four capacitors having values of 20 F, 50 F, 40 F,...Ch. 20 - f the four capacitors in Question 5 were to be...Ch. 20 - A 22-F capacitor is connected in series with a...Ch. 20 - 8. A 450-pF capacitor has a total charge time of...Ch. 20 - Can a nonpolarized capacitor be connected to a DC...Ch. 20 - Explain how an AC electrolytic capacitor is...
Ch. 20 - What type of electrolytic capacitor will be...Ch. 20 - A 500-nF capacitor is connected to a 300-k...Ch. 20 - A film-type capacitor is marked 253 H. What are...Ch. 20 - A postage stamp mica capacitor has the following...Ch. 20 - A postage stamp capacitor has the following color...Ch. 20 - You are changing the starting relay on a central...Ch. 20 - You are an electrician working in an industrial...Ch. 20 - You find that a 25-F capacitor connected to 480...Ch. 20 - Fill in all the missing values. Refer to the...Ch. 20 - Two capacitors having values of 80 F and 60 F are...Ch. 20 - Three capacitors having values of 120 F, 20 F, and...Ch. 20 - Three capacitors having values of 2.2 F, 280 F,...Ch. 20 - A 470-F capacitor is connected in series with a...
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