The RF amplifier of a receiver has an input resistance of 1 kΩ, and equivalent shot noise resistance of 2 kΩ, a gain of 25, and a load resistance of 125 kΩ. Given that the bandwidth is 1.0 MHz and the temperature is 20 °C. If this receiver is connected to an antenna with an impedance of 75 Ω, calculate the noise figure. (in dB)
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[2307 AT, 1.18 x 107 AT/Wb]
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In: Electrical Engineering
Please provide a tutorial on what balance realization means in control systems engineering.
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4- a) Draw a 4-Bit Shift Register that shifts from right to left instead of left to right using D-Flip flops.
b) Draw the serial transfer from shift register A on the right to the shift register B on the left in block form including the timing diagrammes.
c) Draw the serial transfer table in the following form, assuming an initial value of 1101 in the register A and 0110 in the register B.
Timing Pulse Shift Register B Shift Register A
Initial Value
After T1
After T2
After T3
After T4
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A system description that reveals whether a system is stable or not stable without consideration of other system attributes.
A. Stable system
B. Absolute Stability
C. Marginally stable
D. Optimum control system
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In: Electrical Engineering
How do we know which relay contact is actuated by which relay coil? How does this convention differ from that of standard electrical/electronic schematic diagrams, where the relay coil is shown as an actual coil of wire
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Directly copy the source code and paste into the Word file. Screenshot of running result must be presented.
1. (20 points) Write the “Hello, world!” program.
2. (30 points) Write a program to calculate the sum from -5 to10. Use the for loop to do the calculation.
3. (20 points) Write a complete C++ program that asks the user to enter the necessary information about the cylinder, calculate the volume in a function (named as calculate_vol, using reference to pass the volume value out), then display the cylinder volume in main function. The volume of cylinder is:
Vol_Cylinder = πr2h
Where π is 3.14159265, r is the radius, and h is the height.
4. (30 points) Declare a vector container. Using keyboard to input several integer numbers, say at least six integer numbers; find the smallest number and display the result.
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BY Using MATLAB software:
Exercise 3: Calculation of the parameters of a dipole.
% M-File: ML0804
%
% Perform numerical integration to find
% beam solid angle, directivity, and the
% maximum power function for a given length
% dipole.
%
% Variables
% L dipole length (in wavelengths)
% bL2 phase constant * length/2
% N number of theta points
% th,thr angle theta in degrees,radians
% dth differential theta
% num,den temporary variables
% F un-normalized power function
% Fmax maximum power function (W/m^2)
% omegaP beam solid angle (sr)
% D Directivity
clc %clears the command window
clear %clears variables
% Initialize variables
L=1.5;
bL2=pi*L;
N=90;
% Perform calculations
i=1:1:N;
dth=pi/N;
th(i)=i*pi/N;
num(i)=cos(bL2.*cos(th(i)))-cos(bL2);
den(i)=sin(th(i));
F(i)=((num(i)).^2)./den(i);
Fmax=max(F);
Pn=F./Fmax;
omegaP=2*pi*dth*sum(Pn)
D=4*pi/omegaP
Fmax
Question 3: Run this program for different choices of the dipole length.
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Consider a wind turbine comprised of two blades, with a radius of 63 ft., which delivers maximum power when the wind speed is above 16 knots (18.4 mph). The wind turbine is designed to produce 135 hp with an efficiency of 74%. The rotor is designed to operate at a constant speed of 45 rpm in winds over 5 knots (5.8 mph) by controlling system load and adjusting blade angles.
Estimate the blade speed and power coefficient for the maximum power condition.
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In: Electrical Engineering
Explain the role of forward resistance in PN junction diode . Differentiate the approximate and simplified diode models on the basis of forward resistance.
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Q1Explain with your own words the function of a voltage divider and list 3 applications (include the reference/swith your answer)
Q2Explain with your own words the function of a current divider and list 3 applications (include the reference/s with your answer)
Q3Explain the function of dependent or controlled voltage and current sources and list 3 applications (include the reference/s with your answer)
Q4Explain the meaning of Passive Reference Configuration.
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Describe the starting curves of asynchronous motors, with direct start, star-delta start and soft start. (graph and explain)
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