Holooly Plus Logo
Holooly Plus Logo

Question 9.86: The circuit shown in Fig. 9.86 is used in a television recei...

The circuit shown in Fig. 9.86 is used in a television receiver. What is the total impedance of this circuit?

The Blue Check Mark means that this solution has been answered and checked by an expert. This guarantees that the final answer is accurate.
Learn more on how we answer questions.
Y=1240+1j95+1−j84Y=4.1667×10−3−j0.01053+j0.0119Z=1Y=10004.1667+jl.37=10004.3861∠18.2∘Z=228∠−18.2∘Ω\begin{array}{l}{Y}=\frac{1}{240}+\frac{1}{j 95}+\frac{1}{-j 84} \\\\{Y}=4.1667 \times 10^{-3}-\mathrm{j} 0.01053+\mathrm{j} 0.0119 \\\\{Z}=\frac{1}{{Y}}=\frac{1000}{4.1667+\mathrm{jl} .37}=\frac{1000}{4.3861 \angle 18.2^{\circ}} \\\\{Z}={228} \angle {- 1 8 . 2}^{\circ} {\Omega}\end{array}

Related Answered Questions

Find vs(t) in the circuit of Fig. 9.56 if the current ix through the 1-Ω resistor is 0.5 sin 200t A

Verified Answer:
{Z}_{\mathrm{T}}=2+\mathrm{j} 2 \|(1-\mathr...

A power transmission system is modeled as shown in Fig. 9.92. Given the following; Source voltage Vs = 115 ∠ 0° V, Source impedance Zs = 1 + j0.5Ω , Line impedance Z1 = 0.4 + j0.3Ω , Load impedance ZL = 23.2 + j18.9Ω , find the load current IL

Verified Answer:
\begin{array}{l}{Z}={Z}_{\mathrm{s}}+2 {Z}_...

A transmission line has a series impedance of Z = 100 ∠75° Ω and a shunt admittance of Y = 450 ∠48° μS. Find: (a) the characteristic impedance Z0 = √Z / Y (b) the propagation constant γ = √Z Y .

Verified Answer:
(a) Z_{o}=\sqrt{\frac{Z}{Y}}=\sqrt{\frac{10...

Figure 9.91 shows a parallel combination of an inductance and a resistance. If it is desired to connect a capacitor in series with the parallel combination such that the net impedance is resistive at 10 MHz, what is the required value of C?

Verified Answer:
\begin{aligned}{Z}_{\text {in }} &=\fra...

An industrial coil is modeled as a series combination of an inductance L and resistance R, as shown in Fig. 9.90. Since an ac voltmeter measures only the magnitude of a sinusoid, the following measurements are taken at 60 Hz when the circuit operates in the steady state: |Vs| = 145 V, |V1| = 50 V,

Verified Answer:
\begin{aligned}&\text { Let } \quad {V}...

An industrial load is modeled as a series combination of a capacitance and a resistance as shown in Fig. 9.89. Calculate the value of an inductance L across the series combination so that the net impedance is resistive at a frequency of 50 kHz.

Verified Answer:
\begin{array}{l}{Z}_{\text {in }}=\mathrm{j...

A series audio circuit is shown in Fig. 9.88. (a) What is the impedance of the circuit? (b) If the frequency were halved, what would be the impedance of the circuit?

Verified Answer:
(a) {Z}=-\mathrm{j} 20+\mathrm{j} 30+120-\m...

The network in Fig. 9.87 is part of the schematic describing an industrial electronic sensing device. What is the total impedance of the circuit at 2 kHz?

Verified Answer:
\begin{array}{l}\mathrm{Z}_{1}=50+\frac{1}{...

The ac bridge circuit of Fig. 9.85 is called a Wien bridge. It is used for measuring the frequency of a source. Show that when the bridge is balanced, f= 1/2π √R2 R4 C2 C4

Verified Answer:
Let \quad {Z}_{1}=\mathrm{R}_{1}, \quad {Z}...

The ac bridge shown in Fig. 9.84 is known as a Maxwell bridge and is used for accurate measurement of inductance and resistance of a coil in terms of a standard capacitance Cs Show that when the bridge is balanced, Lx=R2R3Cs and Rx= R2/R1 R3 Find Lx and Rx for R1=40 kΩ, R2=1.6 kΩ, R3=4 kΩ, and

Verified Answer:
Let \quad {Z}_{1}=\mathrm{R}_{1} \| \frac{1...