Delmar's Standard Textbook Of Electricity
7th Edition
ISBN: 9781337900348
Author: Stephen L. Herman
Publisher: Cengage Learning
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Chapter 30, Problem 11RQ
To determine
The type of compound-motor connection that should be avoided.
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10pts: Matlab:
From Problem 1 of homework 6, repeated below:
Generate a random binary PAM transmit signal of -1 and + 1 volts of length 100.
Simulate the transmit signal being sent over a channel with AWGN with an Eb/No of 3 dB.
Plot the received signal constellation using a red o to represent when a logical 0 was sent and a
blue * to represent a logical 1 was sent
Question (1) Increase the Eb/No to 7 dB. Approximately what length of the signal do you need to get
consistently within ~5% of the theoretical value for the bit error rate?
a) Guess without doing any simulations
b) Estimate by trial and observing the results.
(1) A baseband PAM communication channel bandwidth is 100 KHz and has a noise power spectral density
of 10^-9 W/Hz. The channel loss between the transmitter and receiver is 25dB. The application requires a
bit rate of 500 Kbps and BER of less than 10^-5. The system uses raised cosine pulses with a roll-off factor
of 0.25. Determine the minimum transmit power required.
(2) Continuing problem 1. Everything for the previous problem stays the same BUT the best Power
Amplifier you can afford has a maximum output power of 10 Watts. What will be estimated BER for the
system?
Explain magnetic hysteresis and give examples of some calculations
Chapter 30 Solutions
Delmar's Standard Textbook Of Electricity
Ch. 30 - Prob. 1RQCh. 30 - Prob. 2RQCh. 30 - Prob. 3RQCh. 30 - Prob. 4RQCh. 30 - What type of motor is known as a constant-speed...Ch. 30 - What is CEMF?Ch. 30 - Prob. 7RQCh. 30 - Prob. 8RQCh. 30 - Prob. 9RQCh. 30 - What type of motor should never be operated at no...
Ch. 30 - Prob. 11RQCh. 30 - What is the most common way of changing the...Ch. 30 - Prob. 13RQCh. 30 - Prob. 14RQCh. 30 - What device is used to disconnect power to the...Ch. 30 - Prob. 16RQCh. 30 - Who was the first person to establish a...Ch. 30 - One horsepower is equal to how many W?Ch. 30 - A motor is operating a load that requires a torque...Ch. 30 - The motor in Question 19 is connected to a 250-VDC...Ch. 30 - Prob. 1PA
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- EXAMPLE 6.8 Suppose the samples of the nonideal received pulse are as follows: 0. m1 Design a three-tap ZF equalizer.arrow_forwardAssume a JFET device with VGS(0) = -1.3 and ipss = 20 mA. Design a self-biased (Fig. 2) JFET common-source amplifier with the gain of -2 and a DC biasing that allows the largest swing in ip. Note that you can choose Vcc to arrive at a desired RD to meet the gain requirement. Since you are designing for a given gain, you may have to check to see if JFET is biased correctly. (Hint: First find Rs for correct VGs and then use the gain to compute RD. Finally, use RD and Rs to determine Vcc). Assume that the amplifier is to interface a source that expects a load of 50 . Also, assume that the amplifier circuit is AC coupled at both ends with 3 dB corner frequency of 15 kHz. Rearrange the circuit in step 1 to implement a common-drain amplifier. Do note that the output capacitor (C2) must be redesigned as the output impedance of common-drain is different from that of common-source amplifier. What is the actual gain? What is the input impedance?arrow_forwardAssume a JFET device with VGS(0) = -1.3 and ipss = 20 mA. Design a self-biased (Fig. 2) JFET common-source amplifier with the gain of -2 and a DC biasing that allows the largest swing in ip. Note that you can choose Vcc to arrive at a desired RD to meet the gain requirement. Since you are designing for a given gain, you may have to check to see if JFET is biased correctly. (Hint: First find Rs for correct VGs and then use the gain to compute RD. Finally, use RD and Rs to determine Vec). Assume that the amplifier is to interface a source that expects a load of 50 2. Also, assume that the amplifier circuit is AC coupled at both ends with 3 dB corner frequency of 15 kHz.arrow_forward
- help on this question about induction motors?arrow_forwardThe MATLAB code is going well but the last part in bandpass, the legend that is supposed to tell the color of both lower and upper-frequency cutoff does not align with each other. As such I need help My Matlab 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 R = 1e3; % Resistance in ohms (1 kΩ) C = 1e-6; % Capacitance in farads (1 μF) L = 0.1; % Inductance in henries (chosen for proper bandpass response) % Compute cutoff frequencies f_cutoff_RC = 1 / (2 * pi * R * C); % RC low-pass/high-pass cutoff f_resonance = 1 / (2 * pi * sqrt(L * C)); % Resonant frequency of RLC Q_factor = (1/R) * sqrt(L/C); % Quality factor of the circuit % Band-pass filter cutoff frequencies f_lower_cutoff = f_resonance / (sqrt(1 + 1/(4*Q_factor^2)) + 1/(2*Q_factor)); f_upper_cutoff = f_resonance / (sqrt(1 + 1/(4*Q_factor^2)) - 1/(2*Q_factor)); % Define Transfer Functions H_low =…arrow_forwardThe MATLAB code is going well but the last part in bandpass, the legend that is supposed to tell the color of both lower and upper-frequency cutoff does not align with each other. As such I need help My Matlab 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 R = 1e3; % Resistance in ohms (1 kΩ) C = 1e-6; % Capacitance in farads (1 μF) L = 0.1; % Inductance in henries (chosen for proper bandpass response) % Compute cutoff frequencies f_cutoff_RC = 1 / (2 * pi * R * C); % RC low-pass/high-pass cutoff f_resonance = 1 / (2 * pi * sqrt(L * C)); % Resonant frequency of RLC Q_factor = (1/R) * sqrt(L/C); % Quality factor of the circuit % Band-pass filter cutoff frequencies f_lower_cutoff = f_resonance / (sqrt(1 + 1/(4*Q_factor^2)) + 1/(2*Q_factor)); f_upper_cutoff = f_resonance / (sqrt(1 + 1/(4*Q_factor^2)) - 1/(2*Q_factor)); % Define Transfer Functions H_low =…arrow_forward
- 1° ⑤ Aa "Human-written solution required" 2. Using the characteristics of Fig. 6.11, determine ID for the following levels of VGs (with VDS > VP): a. VGs = 0V. b. VGs=-1 V. c. VGs -1.5 V. d. VGS -1.8 V. e. VGS = -4 V. f. VGs=-6V. 3. Using the results of problem 2 plot the transfer characteristics of ID vs. VGS- 4. a. Determine Vps for VGs = 0V and Ip = 6 mA using the characteristics of Fig. 6.11. b. Using the results of part (a), calculate the resistance of the JFET for the region Ip = 0 to 6 mA for VGs =0V. c. Determine Vps for VGS = -1 V and ID = 3 mA. d. Using the results of part (c), calculate the resistance of the JFET for the region ID = 0 to 3 mA for VGs -1 V. e. Determine Vps for VGs = -2 V and ID = 1.5 mA. f. Using the results of part (e), calculate the resistance of the JFET for the region ID = 0 to 1.5 mA for VGS-2 V. g. Defining the result of part (b) as ro, determine the resistance for VGs -1 V using Eq. (6.1) and compare with the results of part (d). h. Repeat part (g)…arrow_forward① Esterfication + R'on R Hydrolysis OH Alcohol A. 0-R Carboxylic Acid Ester NOD-10arrow_forward4. a. Determine VDs for VGS = 0 V and ID = 6 mA using the characteristics of Fig. 6.11. b. Using the results of part (a), calculate the resistance of the JFET for the region ID = 0 to 6 mA for VGS = 0 V. c. Determine VDs for VGS = -1 V and ID = 3 mA. d. Using the results of part (c), calculate the resistance of the JFET for the region ID = 0 to 3 mA for VGS = -1 V. e. Determine VDs for VGS = -2 V and ID = 1.5 mA. f. Using the results of part (e), calculate the resistance of the JFET for the region ID = 0 to 1.5 mA for VGS = -2 V. g. Defining the result of part (b) as ro, determine the resistance for VGS = -1 V using Eq. (6.1) and compare with the results of part (d). h. Repeat part (g) for VGS = -2 V using the same equation, and compare the results with part (f). i. Based on the results of parts (g) and (h), does Eq. (6.1) appear to be a valid approximation?arrow_forward
- A. Using D flip-flops, design a logic circuit for the finite-state machine described by the state assigned table in Fig. 1. Present Next State State Output x=0 x=1 Y2Y1 Y2Y1 YY Z 00 00 01 0 01 10 11 888 00 10 0 00 10 1 00 10 1 Fig. 1arrow_forwardAthree phase a.c. distributor AB has: A B C The distance from A to B is 500 m. The distance from A to C is 800 m. The impedance of each section is (6+j 8) /km. The voltage at the far end is maintained at 250 volt. Find: sending voltage, sending current, supply power factor and 80A 60 A total voltage drop. 0.8 lag. P.f 0.6 lead. p.farrow_forwardengineering electromagnetics Subjectarrow_forward
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