H(s)G(s) = 30(s+2)/(s^3+7s^2+12s)

In MATLAB, Use the function margin to plot log-magnitude, phase, gain margin, phase margin. Do not use the function bode.


I graphed it using margin, but how do I just get the phase? I got the gain margin, phase margin, and the cross over frequencies. Thanks

List down three ways of determination of good code.

Draw the schematic diagram of circuit which realizes function F=x'y'z+xz by using 3 input active-0 output DECODER and necessary AND, OR, EXOR and NOT gates.

A rectangular waveguide of width w and height h has cut-off frequencies for TE10 and TE11 modes in the ratio 1 : 2. The aspect ratio ?

How do the Gauss-Seidel, Newton-Raphson, and Fast-Decoupled-Newton-Raphson iteration methods differ from task layout, iteration terminations, and
from the point of convergence?
What does the Gauss-Seidel method acceleration factor means, how does it affect the calculation?

how an induction type Instrument can be used as an AC Voltmeter

Any microcontroller project with minimum requirement use switches, led, and 7-segment.

By using MATLAB software:

Exercise 2: Generate radiation pattern for a dipole as its length varies.

% M-File: ML0803

%

% Dipole antenna movie shows radiation

% pattern as dipole length grows from 0.1

% lambda to 2.1 lambda.

%

% Variables

% L dipole length (in wavelengths)

% bL2 phase constant * length/2

% N number of theta points

% th,thr angle theta in degrees,radians

% num,den temporary variables

% F un-normalized power function

clc %clears the command window

clear %clears variables

% Initialize variables

N=360;

th=1:1:N;

thr=th*pi./180;

% Generate Reference Frame

L=0.1;

polar(0,6); %sets scale for polar plot

T=num2str(L);

S=strvcat('Length',T,'wavelengths');

text(6,6,S)

axis manual

title('Linear Antenna Radiation Pattern')

hold on

pause

% Make the Movie

L=0.1:0.02:2.1;

for n=1:100

polar(0,6)

axis manual

title('Linear Antenna Radiation Pattern')

T=num2str(L(n));

S=strvcat('Length',T,'wavelengths');

text(6,6,S)

hold on

num=cos(pi*L(n)*cos(thr))-cos(pi*L(n));

den=sin(thr);

F=(num./den).^2;

polar(thr,F)

hold off

M(:,1)=getframe;

end

Question 2: Run this program for different choices of dipole length.

Three spherical surface charges σ1, σ2 and σ3 are arranged concentrically around the origin of a Cartesian coordinate system with the radii r1, r2 and r3.
It applies σ1=(-2Q)/(4πr1^2), σ2=(+2Q)/(4πr2^2) and σ3=(-2Q)/(4πr3^2), where Q >0 describes an initially unknown amount of charge. Furthermore, the following applies in the entire room: ε=ε0

A point charge with the charge +Q is located at a point with the distance R to the origin. R > r3 applies.
Determine the force F, which acts on the point charge due to the electric field, according to magnitude and direction.

A radar noncoherently integrates 18 pulses, each of uniform amplitude(the nonfluctuating case). The IF bandwidth is 100kHz.
a) If the average time between false alarms is 20 min, what must be the signal to noise ratio per pulse (S/N)n in order to achieve a probability od detection of 0.80?
b) what is the corresponding value of (S/N)1?

c) what would (S/N)1 be if the target cross section fluctuated according to a Swerling Case 1 model?

A source provides 250 Vrms to three loads.

Z1: P1 = 45 kW and Q1 = +63 kVAR

Z2: pf2 = 0.15 lagging and I2 = 100 A rms

Z3: S3= 15∠50º kVA

Determine the total complex power, average power, and reactive power delivered by the

source to the loads.

Design the load to minimize.

the source current magnitude. What is the impedance and the component value of this

load (assume operating frequency of 60Hz)? The source voltage and total average power

delivered by the source may not change.

Capacitive Reactance,Xc = 1/2πfc

Inductive Reactance,XL = 2πfL

Why there is no reactance in DC? Give answer in sentences.

What is Generic Array Logic (GLA) and Complex Programmable Logic Device (CPLD)?

1. A cellular system is allocated enough bandwidth for 200 channels. If the system has a re-use factor of 7 (each cell surrounded by six others with different channels), how many channels are allowed per cell? What if the re-use factor is 4? What if the re-use factor is 12?
2. If a 10km x 10km area is to be covered by hexagonal cells with a diameter of 1km, how many cells are needed (don't worry about overlaps on the edges of the square area)? Note: diameter is defined from corner to corner, and is twice the edge length. See wikipedia for area formulas.