EBK ELECTRIC CIRCUITS
10th Edition
ISBN: 9780100801790
Author: Riedel
Publisher: YUZU
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Chapter 6.3, Problem 4AP
a.
To determine
Calculate the equivalent inductance of the given parallel inductances.
b.
To determine
Calculate the initial current and the reference direction of current in the equivalent inductor.
c.
To determine
Calculate the current
d.
To determine
Calculate the currents
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I need a detailed solution to a
problem.
The far-zone electric field intensity (array factor) of an end-fire two-element array
antenna, placed along the z-axis and radiating into free-space, is given by
E=cos (cos - 1)
Find the directivity using
(a) Kraus' approximate formula
(b) the DIRECTIVITY computer program at the end of this chapter
Repeat Problem 2.19 when
E = cos
-jkr
0505π
$[
(cos + 1)
(a). Elmax = Cost (case-1)] | max"
= 1 at 8-0°.
0.707 Emax = 0.707.(1) = cos [(cose,-1)]
(cose-1) =
± 0,= {Cos' (2)
= does not exist
(105(0)=
90° = rad.
Bir
Do≈ 4T
ar=2() =
=
Bar
4-1-273 = 1.049 dB
T₂
a. Elmax = cos((cose +1)),
0.707 = cos (Close,+1))
= 1
at 6 = π
Imax
(Cose+1)=== G₁ = cos(-2) does not exist.
Girar=2()=π.
4T
\cos (0) + 90° + rad
Do≈ = +=1.273=1.049dB
IT 2
I need an expert mathematical solution.
The E-field pattern of an antenna. independent of , varies as follows:
0° ≤ 0≤ 45°
E = 0
45°
{1
90°
90° < 0 ≤ 180°
(a) What is the directivity of this antenna?
(b) What is the radiation resistance of the antenna at 200 m from it if the field is equal
to 10 V/m (rms) for Ø
=
0° at that distance and the terminal current is 5 A (rms)?
Chapter 6 Solutions
EBK ELECTRIC CIRCUITS
Ch. 6.1 - The current source in the circuit shown generates...Ch. 6.2 - Prob. 2APCh. 6.2 - The current in the capacitor of Assessment Problem...Ch. 6.3 - The initial values of i1 and i2 in the circuit...Ch. 6.3 - Prob. 5APCh. 6.4 - Write a set of mesh-current equations for the...Ch. 6 - Prob. 2PCh. 6 - Prob. 3PCh. 6 - The current in a 200 mH inductor is
The voltage...Ch. 6 - Evaluate the integral
for Example 6.2. Comment on...
Ch. 6 - Prob. 7PCh. 6 - Prob. 8PCh. 6 - Prob. 9PCh. 6 - Initially there was no energy stored in the 5 H...Ch. 6 - The voltage across a 5 μF capacitor is known to...Ch. 6 - The triangular voltage pulse shown in Fig. P6.15...Ch. 6 - Prob. 16PCh. 6 - The expressions for voltage, power, and energy...Ch. 6 - The initial voltage on the 0.5 μF capacitor shown...Ch. 6 - Prob. 21PCh. 6 - Use realistic inductor values from Appendix H to...Ch. 6 - Prob. 24PCh. 6 - For the circuit shown in Fig. P6.24, how many...Ch. 6 - Prob. 27PCh. 6 - Use realistic capacitor values from Appendix H to...Ch. 6 - Derive the equivalent circuit for a series...Ch. 6 - Derive the equivalent circuit for a parallel...Ch. 6 - Prob. 31PCh. 6 - The four capacitors in the circuit in Fig, P6.32...Ch. 6 - For the circuit in Fig. P6.32, calculate
the...Ch. 6 - Prob. 34PCh. 6 - Prob. 35PCh. 6 - Show that the differential equations derived in...Ch. 6 - Prob. 37PCh. 6 - Let υg represent the voltage across the current...Ch. 6 - Prob. 39PCh. 6 - Prob. 40PCh. 6 - Prob. 41PCh. 6 - Prob. 42PCh. 6 - Prob. 44PCh. 6 - Prob. 45PCh. 6 - Prob. 46PCh. 6 - Prob. 47PCh. 6 - Prob. 48PCh. 6 - Prob. 49PCh. 6 - The self-inductances of two magnetically coupled...Ch. 6 - Prob. 51PCh. 6 - Prob. 52PCh. 6 - Prob. 53P
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