Delmar's Standard Textbook of Electricity (MindTap Course List)
6th Edition
ISBN: 9781285852706
Author: Stephen L. Herman
Publisher: Cengage Learning
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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 24 Solutions
Delmar's Standard Textbook of Electricity (MindTap Course List)
Ch. 24 - What is the phase angle relationship of current...Ch. 24 - What is the phase angle relationship of current...Ch. 24 - What is the phase angle relationship of current...Ch. 24 - An AC circuit has a frequency of 400 Hz. A 16-...Ch. 24 - If 440 V are connected to the circuit, how much...Ch. 24 - Prob. 6RQCh. 24 - What is the true power of the circuit in Question...Ch. 24 - What is the apparent power of the circuit in...Ch. 24 - What is the power factor of the circuit in...Ch. 24 - How many degrees are the voltage and current out...
Ch. 24 - You are an electrician working in a plant. A...Ch. 24 - Prob. 1PPCh. 24 - The circuit is connected to a 400-Hz line with an...Ch. 24 - The circuit is connected to a 60-Hz line. The...Ch. 24 - This circuit is connected to a 1000-Hz line. The...Ch. 24 - A series RLC circuit contains a 4-k resistor, an...Ch. 24 - A series RLC circuit contains a resistor with a...Ch. 24 - Is the power factor in Question 6 a leading or...Ch. 24 - A series RLC circuit contains a resistor with a...Ch. 24 - A series RLC circuit has an applied voltage of 240...Ch. 24 - A series RLC circuit is connected to a 60-Hz power...
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