7.57 The wire that connects an antenna on your roof tothe TV set in your den is a 300-2 wire, as shown inFigure P7.57(a). This means that the impedance seenby the connections on your set is 300 s. Your TV,however, has a 75-2 Impedance connection, as shownin Figure P7.57(b). To achieve maximum powertransfer from the antenna to the television set, youplace an ideal transformer between the antenna and theTV as shown in Figure P7.57(c). What is the turnsratio, N = 1/n, needed to obtain maximum powertransfer?300 2(a)75 2AntennaconnectionsRear view oftelevision(b)300 2n:1V.antenna75 2V,signalD.ellaell

Here, consider the cable impedance as the source impedance and the impedance of the antenna…

Answered: 7.57 The wire that connects an antenna…

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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6-10) Using what you have learned constructing the phasor diagram for the LRC series circuit, construct a diagram for the LRC parallel circuit. Derive an expression for the circuit impedance Z and the phase angle φ between the applied emf and the current supplied by the emf. HINT: in the series circuit, the current through all four components was the same. Ask yourself what the components in this arrangement have in common.
3.n Figure 3P.2 shows two capacitor banks, C, and C2, in a substation C is enercized, but C, is discharged. The three-phase, 60 Hz ratings of the banks are: C,, 5 MVA; C,, 3 MVA, on a 13.8 kV base. The source has a short circuit rating of 20 kA rms at 13.8 kV. The inductance of the loop between C, and C,, represented by L, is 30 µH. 13.8 kV V3 L L2 o to C2 Source Capacitor banks ouG OL 19 Fig. 3P.2. Calculate the peak transient voltage that will appear on C, and the peak transient current that will flow in L,, if the switch S is closed at the peak of the voltage cycle. Point out any assumptions you make.
Solve!
Q2: Write a lecture for teaching the complex power fed to an (R-L) load fed from an AC power source of sinusoidal voltage and current waveforms, describing its three components, their waveforms, their power triangle, and units.
In the DC circuits, due to the .................... frequency, the capacitance will be ...................., while the inductor equal to ........................ circuit.
A sinusoidal voltage source V = 53 /67o Vrms feeds an impedance with a current I = 5 /33o Arms. The apparent power generated by the source is: Select one: a. 118.64 VA b. 80.02 VA c. 286.2 VA d. 265 VA e. 71.55 VA
8.49 In the circuit shown in Fig. P8.49, a generator is connected to a load via a transmission line. Given that : (4 + j2) №2, and Zload = (40+ j30) 2: = Rs = 102, Zline S
For the ac network of Figure Q5, calculate the following; i. The total impedance; ii. The inductance and capacitance values; ii. The total current drawn from the source: iv. Voltage VL and Vc. Xc 120 %3D R =90 X = 62 %3D ll + VL + VR VC E=30L-60° Frequency=50HZ ZT Figure Q5
Add the two voltages below together (phasor voltages are RMS). ?ଵ =60 ? ∠ 0° ?ଶ =80 ?∠ 270° a) What is the resultant as a phasor using RMS voltage and degrees? b) What is the resultant voltage as a sinusoidal equation if the frequency is 100 Hz?
NOTE: Polar form for Voltage & Current. Rectangular form for Impedance Find the total impedance of the circuit, total power (apparent) delivered by the current source, Draw the phasor diagram of the voltage and current at the source, the current passing through the R2 and L1 branch, Draw the phasor diagram of the voltage and current at the R2 and L1 branch. Also, is the circuit inductive, capacitive, or neither (resistive)?
The following is given for a series R-L-C circuit: resistor (R) = 8 Ohms, an inductor (L) = 32 mH and a capacitor (C) = 800uF. The circuit is supplied by a voltage source of e = 120 sin (125t) Volts. What is the angular frequency of the ac source? What is the period of ac source? What is the circuit impedance? What is the power factor? What is the real power of the circuit? What is the rms value of the circuit current?
Q22222 (BBBBB)

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