Q1: Design a 9th order low-pass filter with cut-off ?? /2 using the Hanning window. a) Plot its frequency response. b) Express the Input/ Output relation. c) let ??[??]{ 0    ??or ??=0,1,2…..,10

{1 ??or ??=11,12,…..30 Calculate ??=????. Plot and comment on the shape of y.

Q2: Design a 9th order high-pass filter with cut-off ??/ 4 using the Hanning window. a) Plot the frequency response. b) Express the Input/ Output relation. c) let ??[??]={ 0    ??or ??=0,1,2…..,10

{1    ??or ??=11,12,…..30             Calculate ??=????. Plot and comment on the shape of y.

HARDWORK

In this lab, you will make a digital thermometer using the SEN-11931 breakout board as well as the 4-bank seven-segment LED display. Design the hardware connection of the SEN-11931, reuse the 4-bank 7-segment LED connection from Lab 4 for the mbed to read the temperature from the SEN-11931 and display the temperature in Fahrenheit degrees on the LED display in the format of xxx.x. Build your circuit and include all the required information about your hardware design in your lab report. You will also need to make the decision on whether pull-up resistors are needed. Based on the hardware you designed, write a code that takes temperature measurement every 5 seconds and display the temperature in Fahrenheit degrees in the format of xxx.x (for example: 098.6 or 104.8) on the 4-bank seven-segment LED display.

Compare a wireless radio system with a fiber-optic communication system for digital data communications over a distance of 1 km. Assume a desired data rate of 75 Mbps. Give pros and cons, advantages and disadvantages of each. Which one would be better, all factors being considered?

matlab

Q1)

a) create a vector that starts at a, ends at b, and has a spacing of c (allow the user to input all of these parameters)

b)create an inches vector using a,b and c

c) calculate the corresponding values of feet in another vector (1feet=12 inches)

d) group the inch vector and the feet vector together into a table matrix

e)use the disp command to create a title for a table that converts inches to feet

f)use the disp command to create column headings for your table

g)use fprintf command to send your table to the command window

(a) For a ±10V digital-to-analog 10-bit converter, what is the analog equivalent of digital number 183?

(b) For a ±10V digital-to-analog 10-bit converter, what is the analog equivalent of digital number 1301?

(c) For a 0 − 10V analog-to-digital 10-bit converter, what is the digital equivalent of an analog 2.355V?

(d) For a ±5V analog-to-digital 12-bit converter, what is the digital equivalent of an analog 4.265V?

You are trying to model an unknown system that provides power through two output terminals (a and b). You have no information on the system inside the box. You follow the same steps in the lab(measure the open-circuit voltage and short-circuit current) to model the system as a Thevenin equivalent. Will this model be accurate? Explain your answer.

Ethics and professional responsibility:

1. Who are electrical engineers professionally or ethically responsible to?

2. What are some of the responsibilities that electrical engineers have to these groups?

3. What pressures exist to tempt an electrical engineer to neglect their professional and ethical responsibilities?

4. What problems might result from diligently fulfilling your professional and ethical responsibilities in your work?

5. What problems might result from neglecting your professional and ethical responsibilities in your work?

6. Is it important for a professional society, like IEEE, to have a code of ethics? ________Why or why not?

Impact of engineering solutions:

7. Name some electrical engineering solutions or developments that have had a significant impact on society?

8. What were some of the benefits? In what ways were new problems created?

Contemporary Issues:

9. What are some of the most critical issues facing society today?

10. Do you think electrical engineers will be able to offer any help in resolving these issues?

11. What new technologies will be important for electrical engineers to be knowledgeable about over the next five years?

Frequency Divider: Use a count-for-50M counter and some glue logics to construct a 1 Hz clock frequency. Construct a frequency divider of this kind. 2.1 Write the specification of the frequency divider. 2.2 Draw the block diagram of the frequency divider.

The neutral point of 25MVA, 11kW alternator is grounded through a resistance of 5Ω, the relay is set of operate when there is an out of balance current of 2A. The CTs used have a ratio of 1000/5. Calculate (neglect resistance of alternator):
i. The percentage of stator winding protected against earth fault.
ii. The minimum value of earthing resistance to protect 95% of the winding.

A 4-quadrant is known as a versatile singe-phase converter that can generate any periodic output voltage of almost any frequency, phase angle, amplitude and wave shape. Explain how this can be achieved?

Can you explain the difference between the following two methods:

1)zero padding

2)periodic extension

when computing DFT of finite extend signals.

Create a program that stores the information of up to 50 containers loaded on ship. The program should contain a menu to do the following:

A or a     to add a container.

R or r      to retrieve the information of one container.

T or t      to retrieve the information of all containers.

W or w   to retrieve the total weight of the loaded containers.

X or x      to exit the program

Ask the user for the number of containers to be loaded, create an array of floats with five rows and a number of columns equal to the number of containers provided by the user.

Option A: for this option check if the array has an empty column to enter the information for a container, if not, output a message indicating that array is full. If array is not full, ask the user for the ID number, length in meters, width in meter, height in meters, and weight in Kg of the container and store them in the array.

Option R: Ask the user for the desired ID number to be searched. If found, output the ID number, length in meters, width in meter, height in meters, weight in Kg, and volume in cubic meters of the container each on a line. If not found, display a message to that effect.

Option T: retrieve the info for all containers in the array with a dotted line separating one another. The info retrieved and calculated should be the same as the above step.

Option W: display the total weight of all the containers in the array.

Option X: Exit the program.

how does lighting affect worker productivity

. What does each line of the following code do?

fsrPin = ‘A4’; ledPin = ‘D4’;

anArduinoObj = arduino();

forceVoltage = readVoltage(anArduinoObj, fsrPin);

if forceVoltage > 4.0

writeDigitalPin(anArduinoObj, ledPin, 1);

end

Based on the Adafruit pages related to their round FSR sensor, what is the required force to read a voltage greater than 4V?