Mindtap Electrical, 4 Terms (24 Months) Printed Access Card For Herman's Delmar's Standard Textbook Of Electricity, 6th (mindtap Course List)
6th Edition
ISBN: 9781305634312
Author: Herman, Stephen L.
Publisher: Cengage Learning
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Chapter 3, Problem 7RQ
A thundercloud has a negative charge, and an object on the ground has a positive charge. Will the lightning discharge be from the cloud to the ground or from the ground to the cloud?
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Please confirm that my solution is correct, especially the block diagram. Please DRAW (not type) what the block diagram would look like if it's incorrect.
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use this code on the bottom to answer the question in the photo
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.
Chapter 3 Solutions
Mindtap Electrical, 4 Terms (24 Months) Printed Access Card For Herman's Delmar's Standard Textbook Of Electricity, 6th (mindtap Course List)
Ch. 3 - Why is static electricity considered to be a...Ch. 3 - If electrons are removed from an object, is the...Ch. 3 - Why do static charges accumulate on insulator...Ch. 3 - What is an electroscope?Ch. 3 - An electroscope has been charged with a negative...Ch. 3 - Can one thundercloud contain both positive and...Ch. 3 - A thundercloud has a negative charge, and an...Ch. 3 - Name two devices used for lighting protection.Ch. 3 - What type of material is used to coat the aluminum...Ch. 3 - What special property does this material have that...
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