Principles Of Electric Circuits
10th Edition
ISBN: 9780134879482
Author: Floyd, Thomas L.
Publisher: Pearson,
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Chapter 6, Problem 3ST
A 330 Ω resistor, a 270 Ω resistor, and a 68 Ω resistor are all in parallel. The total resistance is approximately
- 1. 668 Ω
- 2. 47 Ω
- 3. 68 Ω
- 4. 22 Ω
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clc; clearvars;
% Read the file [y, Fs] = audioread('106miles.wav'); N = length(y); Nfft = 2^nextpow2(N); dt = 1/Fs; t = (0:dt:(N-1)*dt)'; % Ensure t is a column vector y = y - mean(y); % Remove DC component (if not already zero-mean)
% Carrier signal (25 kHz) fc = 25000; % Carrier frequency in Hz carrier = cos(2 * pi * fc * t);
% DSB-SC Modulation modulated_signal = y .* carrier;
% Plot Time Domain Signal figure; subplot(2,1,1); plot(t, y); title('Original Signal (Time Domain)'); xlabel('Time (s)'); ylabel('Amplitude');
subplot(2,1,2); plot(t, modulated_signal); title('DSB-SC Modulated Signal (Time Domain)'); xlabel('Time (s)'); ylabel('Amplitude');
% Frequency Domain (FFT) Y = fft(y, Nfft) / Nfft; Modulated_Y = fft(modulated_signal, Nfft) / Nfft; f = Fs * (0:(Nfft/2)) / Nfft; % Frequency vector
% Plot Frequency Domain Signal figure; subplot(2,1,1); plot(f, abs(Y(1:Nfft/2+1))); title('Original Signal…
5-9 A 230 V shunt motor has a nominal arma-
ture current of 60 A. If the armature resist-
ance is 0.152, calculate the following:
a. The counter-emf [V]
b. The power supplied to the armature [W]
c. The mechanical power developed by the
motor, [kW] and [hp]
5-10 a. In Problem 5-9 calculate the initial start-
ing current if the motor is directly con-
nected across the 230 V line.
b. Calculate the value of the starting resistor
needed to limit the initial current to 115 A.
how to solve this?
Chapter 6 Solutions
Principles Of Electric Circuits
Ch. 6 - Five resistors are positioned on a protoboard as...Ch. 6 - How would you connect all of the resistors in...Ch. 6 - If a third branch is added to the circuit in...Ch. 6 - Determine IT and I2 if a fourth branch is added to...Ch. 6 - How much current will an ammeter measure when it...Ch. 6 - When the brake lights are applied, the total...Ch. 6 - If a 33 resistor is connected in parallel in...Ch. 6 - Calculate the total resistance connected to the...Ch. 6 - If two of the speakers are removed, what is the...Ch. 6 - The basic circuit for a rear window defroster can...
Ch. 6 - If you need to obtain a total resistance of 130 ,...Ch. 6 - Sometimes a direct measurement of resistance is...Ch. 6 - Determine the current through RL in Figure 6-0...Ch. 6 - Figure 6-35 Determine the current through each...Ch. 6 - Determine the total amount of power in the...Ch. 6 - The amplifier in one channel of a stereo system as...Ch. 6 - In Figure 6-51, there is a total current of 31.09...Ch. 6 - Your ohmmeter indicates 9.6 k between pin 2 and...Ch. 6 - A 330 resistor, a 270 resistor, and a 68 ...Ch. 6 - Refer to Figure 6-83 If R7 opens, the resistance...Ch. 6 - Determine whether or not all the resistors in...Ch. 6 - The following currents are measured in the same...Ch. 6 - There is a total of 500 mA of current into five...Ch. 6 - In the circuit of Figure 6-65, determine the...Ch. 6 - The electrical circuit in a room has a ceiling...Ch. 6 - The following resistors are connected in parallel:...Ch. 6 - What is the total current in each circuit of...Ch. 6 - Find the values of the unspecified quantities...Ch. 6 - What is the current through each resistor in...Ch. 6 - Determine all of the resistor values in Figure...
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