Engineering Electromagnetics
9th Edition
ISBN: 9780078028151
Author: Hayt, William H. (william Hart), Jr, BUCK, John A.
Publisher: Mcgraw-hill Education,
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Chapter 6, Problem 6.26P
Given the spherical symmetric field in free space, V=Ve0e-r/a, find. (a) Pv at r=a; (b) the electric field at r=a; (c) the total charge
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per kilometre.
Example 10.4. Estimate the distance over which a load of 15000 kW at a p.f. 0.8 lagging can be
delivered by a 3-phase transmission line having conductors each of resistance 19
The voltage at the receiving end is to be 132 kV and the loss in the transmission is to be 5%.
Solution.
or
Power delivered
Line current,
I
√√3 × line voltage × power factor
15000 × 10³
√√3 x132 × 103 x 0.8
= 82 A
Line losses = 5% of power delivered = 0.05 × 15000 = 750 kW
Let RQ be the resistance of one conductor.
Line losses = 31²R
750 × 10³ = 3 × (82)² × R
.
R =
750 × 10³
3 × (82)²
How was H
= 37-18 Ω
Resistance of each conductor per km is 1 (given).
; calculated 2
..
Length of line
37.18 km
Could assistance be given to find the correct R1, R2 and Rs values to design an oscillator circuit which can make an LED flash at a frequency perceivable by human eyes. Two 10M resistors are available along with the other components listed.
?Can you explain the steps clearly using diagrams and equations
A 3-phase, 50 Hz, overhead line has conductors diameter of 4 cm. If the line length is 100 km, Calculate the
inductance, capacitance per phase, assuming complete transposition.
6 m
a1
b₁
a₂
bz
8 m
5m
3 m
C2
Chapter 6 Solutions
Engineering Electromagnetics
Ch. 6 - Prob. 6.1PCh. 6 - Let S = 100 mm2. d= 3 mm, and er = 12 for a...Ch. 6 - Capacitors tend to be more expensive as their...Ch. 6 - Prob. 6.4PCh. 6 - Prob. 6.5PCh. 6 - A parallel-plane capacitor is made using two...Ch. 6 - For the capacitor of Problem 6.6, consider the...Ch. 6 - Prob. 6.8PCh. 6 - Prob. 6.9PCh. 6 - A coaxial cable has conductor dimensions of a =...
Ch. 6 - Prob. 6.11PCh. 6 - (a) Determine the capacitance of an isolated...Ch. 6 - With reference to Figure 6.5, let b=6m, h=15m, and...Ch. 6 - Two=16 copper conductor (1.29 mm diameter) are...Ch. 6 - Prob. 6.15PCh. 6 - Prob. 6.16PCh. 6 - Construct a curvilinear-square map for a coaxial...Ch. 6 - Prob. 6.18PCh. 6 - Construct a curvilinear- square map of the...Ch. 6 - Prob. 6.20PCh. 6 - The inner conductor of the transmission line shown...Ch. 6 - Prob. 6.22PCh. 6 - Prob. 6.23PCh. 6 - A potential field in free space is given in...Ch. 6 - A capacitor is formed from concentric spherical...Ch. 6 - Given the spherical symmetric field in free space,...Ch. 6 - Let V=z(x,y)=4e2xf(x)3y2 in a region of free space...Ch. 6 - Show that in a homogeneous medium of conductivity...Ch. 6 - What total charge must be located within a unit...Ch. 6 - Prob. 6.30PCh. 6 - For the parallel-plate capacitor shown in Figure...Ch. 6 - Prob. 6.32PCh. 6 - The functions V1 (p, , z) and V2(p, , z) both...Ch. 6 - Prob. 6.34PCh. 6 - Prob. 6.35PCh. 6 - Prob. 6.36PCh. 6 - Prob. 6.37PCh. 6 - Prob. 6.38PCh. 6 - Prob. 6.39PCh. 6 - Prob. 6.40PCh. 6 - Prob. 6.41PCh. 6 - Prob. 6.42PCh. 6 - Prob. 6.43PCh. 6 - Prob. 6.44PCh. 6 - Prob. 6.45PCh. 6 - By appropriate solution of Laplaces and Poissons...
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