ELECTRIC CIRCUITS-W/MASTERINGENGINEERING
11th Edition
ISBN: 9780134894300
Author: NILSSON
Publisher: PEARSON
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Chapter 9, Problem 81P
a.
To determine
Show the impedance
b.
To determine
Show the impedance
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A wattmeter is connected with the positive lead on phase “a” of a three-phase system. The negative lead is connected to phase “b”. A separate wattmeter has the positive lead connected to phase “c”. The negative lead of this wattmeter is connected also to phase “b”. If the input voltage is 208 volts line-to-line, the phase sequence is “abc” and the load is 1200 ohm resistors connected in “Y”, what is the expected reading of each of the wattmeters? (Hint: draw a phasor diagram)
a
b
1 ΚΩΣ
56002
82092
470Ω
Rab, Rbc, Rde
d
e O
470Ω Σ 5 Ω
25$
5602 3 4 Ω
MY code is experiencing a problem as I want to show both the magnitude ratio on low pass, high pass, and bandbass based on passive filters:
Code:
% Define frequency range for the plot
f = logspace(1, 5, 500); % Frequency range from 10 Hz to 100 kHz
w = 2*pi*f; % Angular frequency
% Parameters for the filters (you can modify these)
R = 1e3; % Resistance in ohms (1 kOhm)
C = 1e-6; % Capacitance in farads (1 uF)
L = 10e-3; % Inductance in henries (10 mH)
% Transfer function for Low-pass filter: H_low = 1 / (1 + jωRC)
H_low = 1 ./ (1 + 1i*w*R*C);
% Transfer function for High-pass filter: H_high = jωRC / (1 + jωRC)
H_high = 1i*w*R*C ./ (1 + 1i*w*R*C);
% Transfer function for Band-pass filter: H_band = jωRC / (1 + jωL/R + jωRC)
H_band = 1i*w*R*C ./ (1 + 1i*w*L/R + 1i*w*R*C);
% Plot magnitude responses
figure;
subplot(3,1,1);
semilogx(f, 20*log10(abs(H_low))); % Low-pass filter
title('Magnitude Response of Low-pass Filter');
xlabel('Frequency (Hz)');
ylabel('Magnitude (dB)');
grid…
Chapter 9 Solutions
ELECTRIC CIRCUITS-W/MASTERINGENGINEERING
Ch. 9.3 - Prob. 1APCh. 9.3 - Prob. 2APCh. 9.4 - Prob. 3APCh. 9.4 - Prob. 4APCh. 9.5 - Four branches terminate at a common node. The...Ch. 9.6 - A 20 resistor is connected in parallel with a 5...Ch. 9.6 - The interconnection described in Assessment...Ch. 9.6 - Prob. 9APCh. 9.7 - Find the steady-state expression for vo (t) in the...Ch. 9.7 - Find the Thévenin equivalent with respect to...
Ch. 9.8 - Use the node-voltage method to find the...Ch. 9.9 - Use the mesh-current method to find the phasor...Ch. 9.10 - Prob. 14APCh. 9.11 - The source voltage in the phasor domain circuit in...Ch. 9 - Prob. 1PCh. 9 - A sinusoidal voltage is given by the...Ch. 9 - Prob. 3PCh. 9 - Prob. 4PCh. 9 - Prob. 5PCh. 9 - Prob. 6PCh. 9 - Prob. 7PCh. 9 - Find the rms value of the half-wave rectified...Ch. 9 - Verify that Eq. 9.7 is the solution of Eq. 9.6....Ch. 9 - Prob. 10PCh. 9 - Use the concept of the phasor to combine the...Ch. 9 - The expressions for the steady-state voltage and...Ch. 9 - Prob. 13PCh. 9 - A 50 kHz sinusoidal voltage has zero phase angle...Ch. 9 - Prob. 15PCh. 9 - A 10 Ω resistor and a 5 μF capacitor are connected...Ch. 9 - Three branches having impedances of , and ,...Ch. 9 - Prob. 18PCh. 9 - Prob. 19PCh. 9 - Show that at a given frequency ω, the circuits in...Ch. 9 - Show that at a given frequency ω, the circuits in...Ch. 9 - Prob. 22PCh. 9 - Prob. 23PCh. 9 - Prob. 24PCh. 9 - Find the admittance Yab in the circuit seen in...Ch. 9 - Find the impedance Zab in the circuit seen in Fig....Ch. 9 - For 1he circuit shown in Fig. P9.27 find the...Ch. 9 - Prob. 28PCh. 9 - Prob. 29PCh. 9 - The circuit in Fig. P9.30 is operating in the...Ch. 9 - Find the steady-state expression for vo in the...Ch. 9 - Prob. 33PCh. 9 - Find the value of Z in the circuit seen in Fig....Ch. 9 - Find Ib and Z in the circuit shown in Fig. P9.35...Ch. 9 - The circuit shown in Fig. P9.36 is operating in...Ch. 9 - The frequency of the sinusoidal voltage source in...Ch. 9 - The frequency of the sinusoidal voltage source in...Ch. 9 - The frequency of the source voltage in the circuit...Ch. 9 - The circuit shown in Fig. P9.40 is operating in...Ch. 9 - The source voltage in the circuit in Fig. P9.41 is...Ch. 9 - Find Zab for the circuit shown in Fig P9.42.
Ch. 9 - Use source transformations to find the Thévenin...Ch. 9 - Use source transformations to find the Norton...Ch. 9 - The sinusoidal voltage source in the circuit in...Ch. 9 - Find the Norton equivalent circuit with respect to...Ch. 9 - Prob. 47PCh. 9 - Find the Norton equivalent with respect to...Ch. 9 - Find the Norton equivalent circuit with respect to...Ch. 9 - Find the Thévenin equivalent circuit with respect...Ch. 9 - Prob. 51PCh. 9 - Find Zab in the circuit shown in Fig. P9.52 when...Ch. 9 - The circuit shown in Fig. P9.53 is operating at a...Ch. 9 - PSPICEMULTISIM Use the node-voltage method to find...Ch. 9 - Use the node-voltage method to find V0 in the...Ch. 9 - PSPICEMULTISIM Use the node-voltage method to find...Ch. 9 - Use the node-voltage method to find V0 and I0 in...Ch. 9 - Use the node-voltage method to find the phasor...Ch. 9 - Use the mesh-current method to find the...Ch. 9 - Use the mesh-current method to find the...Ch. 9 - Use the mesh-current method to find the...Ch. 9 - Use the mesh-current method to find the...Ch. 9 - Use the mesh-current method to find the branch...Ch. 9 - Use the mesh-current method to find the...Ch. 9 - Prob. 65PCh. 9 - Prob. 66PCh. 9 - For the circuit in Fig. P9.67, suppose
What...Ch. 9 - For the circuit in Fig. P9.68, suppose
What...Ch. 9 - The op amp in the circuit in Fig. P9.69 is...Ch. 9 - Prob. 70PCh. 9 - Prob. 71PCh. 9 - Prob. 72PCh. 9 - Prob. 73PCh. 9 - Find the steady-state expressions for the currents...Ch. 9 - Prob. 75PCh. 9 - Prob. 76PCh. 9 - The sinusoidal voltage source in the circuit seen...Ch. 9 - Prob. 78PCh. 9 - Prob. 79PCh. 9 - Prob. 80PCh. 9 - Prob. 81PCh. 9 - Prob. 82PCh. 9 - Prob. 83PCh. 9 - Prob. 84PCh. 9 - Prob. 86PCh. 9 - Prob. 87PCh. 9 - Prob. 88PCh. 9 - Prob. 89PCh. 9 - Prob. 90PCh. 9 - Prob. 91P
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