In digital circuits, MOSFETs are used as switches. What are the key features of an ideal switch? Provide your own argument as to whether MOSFETs are ideal switches based on their I-V curves and why.

Draw the waveform and eye diagram of BPSK and BFSK and from this diagram find the bit spacing.

Describe the challenges of GaN material. Explain why it can be applied in 5G communication.

Consider the following periodic signal : x(t)=∑∞n=−∞Π(t−4n2). 1. Determine and plot the spectrum Fourier Transform of signal x(t) ( For plot : Use only interval n=-2 to n=2). 2. Based on the result obtained in part one. Determine Complex Exponential Fourier Series, and trigonometric Fourier Series. 3. Evaluate the energy spectral density of the periodic signal x(t) in rang (n=-2 to n=2)

Both the knee voltage and knee current of a Zener diode are two critical parameters marking the onset

of Zener breakdown. How to you incorporate these two parameters in the equivalent circuit of Zener

diode (The equivalent circuit of Zener diode that we developed in lectures does not take into account

of the knee voltage and knee current)

A) Given an electric field:

Ei = ˆx100e^{−γ z} V/m                       Find the associated magnetic field. ( Note: Ei is vector, and ˆx = x hat)

B) if this field is normally incident on a uniform lossy medium with Er = 3.0, tan δ = 0.1, and μ = μ0

Initially propagating in air, find both the reflection and transmission coefficients.

122-A galvanometer shows a deflection of 36 degrees for a current of 3,6mA when a rectangular coil of area 30cm x 30cm with 100 turns of wire is suspended with the value of B=4x10^{-2 , find the torsional constant of the suspension wire}

^{122B-A delta network has the following values R}_AB =120ohms, R_BC=150ohms, R_CA=200ohms

calculate the values of the equivalent star network

Consider the message ‘is he it she is this is it is’. (Include space between each word also as a symbol)

Obtain:

1. Binary equivalent of each symbol  
2. Average code length
3. Information content for each symbol
4. Coding efficiency η in %   

A 400V, 50 Hz , 80 hp eight pole Δ connected synchronous motor has a reactance of 0.6 and negligible armature resistance. Its friction, windage and core losses are 1.2KW, 0.5KW and 1KW respectively .

1. What is the speed of this motor?
2. If this motor is initially supplying rated hp at 0.82 PF lagging . What are the magnitudes and angles of ?
3. What is the power factor of the motor?
4. How much induced torque and load torque is produced by this motor ?
5. If is increased by 30 percent ,what is the new magnitude of the armature current?
6. What is the motor’s new power factor?

I am working on an IOT BASED HOME AUTOMATION PROJECT...I want to make use of a camera in this system to be able to capture movements or happenings in the house...
Can this be accomplished by using NODEMCU,ARDUINO,RASPBERRY PIE..
if yes...I need detailed ways on how to do it using each of them.

2) (a) Calculate the Capacitance per unit area of a MOSCAP with an oxide thickness of 2 , when it is biased in inversion. The oxide is Silicon dioxide, the semiconductor is silicon, and the metal is Copper. (b) Does your answer depend on if the silicon substrate is p-type or n-type? (c) Does your answer depend on the type of metal used.

Magnetic Circuits

Q1: What are concept needed to solve Magnetic circuit problems

Q2: how to draw phasor diagram of the magnetic circuit?

Q7.1    The normalized passband edge angular frequency Wp is - 0.2
   The normalized stopband edge angular frequency Ws is - 0.4
   The desired passband ripple Rp is - 0.5 dB
   The desired stopband ripple Rs is - 40 dB

In Matlab:

Q7.X1 Design a fixed window FIR filter satisfying the specifications in Q7.1. Plot the magnitude and phase responses. Also include magnified plots of passband and stopband showing how well the filter satisfies the design specifications.

EENG 1910: Project I – Introduction to Electrical Engineering Assignment-8

1. Create a MATLAB function that will take as inputs the radius

(r) and height (h) of a cone and calculate its volume. The formula to compute the volume of a cone is as follows.

1

? = 3 ??2ℎ

Write a descriptive comment on the use of the function so that

the user by typing help nameofyourfunction has all the necessary information to use your function.

In each of the following questions (2. & 3.), first, evaluate the given MATLAB code for each of the test cases without using MATLAB. Then, using MATLAB, check the answers you obtained first.

2.

end

3.

switch letter                a. letter = ‘p’ case ‘x’       b. letter = ‘y’ disp(‘Hello’)         c. letter = ‘q’ case{‘y’, ‘Y’}          d. letter = ‘Q’

disp(‘Yes’)           e. letter = ‘x’ case ‘Q’

disp(‘Quit’)

otherwise

disp(‘Error’)

end

Note: When you copy and paste codes into MATLAB, some characters may not correctly translate. As a result, you may have to correct them for the script to run properly.

4. A switch statement can often be used in place of a nested if- else or an if statement with many elseif clauses. Switch statements are used when an expression is tested to see whether it is equal to one of several possible values.

The script pickPizzaCase.m posted on Canvas is written using a case statement. Analyze it and convert it to if-elseif-else statement.

5. Write MATLAB script that will prompt the user for a temperature in degrees Celsius, and then a letter ‘F’ for Fahrenheit or ‘K’ for Kelvin. The script should work weather a capital or small case letter is entered. The script will then print the corresponding temperature in the scale specified by the user. For example, the outputs might look as follows.

>> conversioncode

Please enter a temperature value in Celsius: 45 Do you want K or F? k

The temperature in Kelvin is: 318.15.

Please enter a temperature value in Celsius: 29.3 Do you want K or F? f

The temperature in Fahrenheit is: 84.74.

>> conversioncode

Please enter a temperature value in Celsius: 78 Do you want K or F? K

The temperature in Kelvin is: 351.15.

>> conversioncode

Please enter a temperature value in Celsius: 74 Do you want K or F? P

Please enter F or K!

Note: Lesson-8 has a sample code that could simply be modified. Also, conversioncode is simply the name that I have given to my script. The conversions can be performed using the formulas below.

? = ? + 273.15

? = 9 ? + 32

5

6. Use a for loop to sum the elements in the following vector: V=[10, 27, -66, 43, 72, 87, 56,98, 33, 23.5, 8.5, 77.7, 36, 24,11, 85, 55, 63, 4, 39, 100, -96, 4, 41, 189, -9,78.3, -83]. You will need to first determine the size (length) of the vector. Check your answer using the MATLAB sum function.

7. Repeat the previous problem, this time using a while loop.

8. Create a function called “isInt” to check whether an input number is an integer. The function should display a sentence of the form: “22.5 is not an integer!” or “99 is an integer!” if the inputs were respectively 22.5 and 99.

9. In chemistry, the pH of an aqueous solution is a measure of its acidity. The pH scale ranges from 0 to 14, inclusive. A solution with a pH of 7 is said to be neutral, a solution with a pH greater than 7 is basic, and a solution with a pH less than 7 is acidic. Write a script that will prompt the user for the pH of a solution, and will print whether it is neutral, basic, or acidic. If the user enters an invalid pH, an error message should be printed.