ELECTRICAL ENGINEERING QUESTIONS

From Here: 1. Carefully read this entire document. 2. Watch the pre-lab tutorial videos for exercise 1 and exercise 2, available on the course YouTube channel. This video will teach you how to represent block diagrams in simulink and how to write functions which provide to simulink the model parameters and simulation settings. 3. As a practice run, replicate the pre-lab examples on your own. Be confident that you understand all aspects of the process before starting the assessment. 4. Download the assessment template folder from blackboard. Unzip the folder and rename it using your student ID, name and surname (use only letters and numbers). Complete each of the two exercises by setting this folder as your working directory in MATLAB and modifying the appropriate templates within this unzipped folder. Do not modify the filenames or directory structure. When you are finished, you will re-zip and submit this folder. 5. Check your results against the sample outputs provided. 6. Follow the submission instructions to submit your results to blackboard. Unfortunately, MATLAB Grader is not compatible with Simulink.

Exercise 1 — Construct a Simulink Model which will be simulated by provided MATLAB Code. For exercise 1, you will construct a simulink model for the RLC circuit we met in class: We found that for the following choice of states and input: z1(t) = λ(t) z2(t) = q(t) u1(t) = Vi(t) We obtain the state-space equations: z˙1(t) = u1 − R L z1 − 1 C z2 z˙2(t) = 1 L z1. Your Task 1. Construct the block diagram for this state-space model on paper. 2. Represent your block diagram in Simulink, by constructing it within the nearly-blank rlc.slx template file provided within the template folder. 3. Connect the provided to-workspace blocks in order to send the relevant signals (simulation time via the clock block, and the states) to the workspace. 4. Simulate your system by running the lab2 ex1.m main script. 5. A sample output has been provided for you to compare your results against. Exercise 1 Files There are 4 files relevant to Exercise 1: 1. lab2 ex1.m, the ‘main’ script for this exercise, which you must not modify. This script calls setupsim ex1.m to import the simulation parameters, then calls the MATLAB built-in sim function to simulate rlc.slx, which you will modify. Finally, it calls plotresulst ex1.m to plot the results of the simulation. You should run this file to verify that your simulink model is correct. 2. setupsim ex1.m, a function which defines the model parameters and simulation setings, which you must not modify. 3. plotresults ex1.m, a function which extracts the state and time vectors from the simulation results structure and plots these, which you must not modify. 4. rlc.slx, a nearly-blank simulink model which you SHOULD modify to complete this exercise.

Exercise 2 — Write MATLAB Code to simulate a given Simulink model. For exercise 2, you will simulate a simple 1-link robotic manipulator system shown below: Tm !m Va Ra La e + + + + The idealised model in the figures shows of a DC motor coupled to a pendulum through a gear box. The total inertia of the system is represented by Jm, and a linear friction b is considered in the shaft of the motor. The pendulum produces a torque Tp to the motorgear-box system that has the following characteristic: Tp = l m g sin(θp), where θp is the angle of the pendulum. The angular velocity of the pendulum is ωp, which is related the angular velocity of the motor ωm by the gear-box ratio N = N2 N1 . The armature inductance, resistance and input voltage are represented by La, Ra and Va respectively. The state-space model of the system is: z˙1 = u − Ra La z1 − Km Jm z2 z˙2 = Km La z1 − b Jm z2 − `mg N sin  1 N z3  z˙3 = 1 Jm z2 y = 1 N z3 where z1 = λa, z2 = Lm and z3 = θm are the states, u = Va is the input, and y is the output. To solve this exercise, we propose an alternative Simulink block diagram that is useful to build general class of models. The state-space equations are represented by the Simulink block diagram model given in rob manipulator.slx and the function ss model.slx. Your Task 1. Complete the nearly-empty functions setupsim ex2.m and plotresults ex2.m provided to you as templates. The provided function headers should guide you on what these functions need to do. 2. Run the main script lab2 ex2.m to verify that your functions correctly define the parameters required to simulate the simulink model and plot the results. You should simulate for the following parameter values: La = 0.1 H, Ra = 1 Ω, Km = 0.4 v s, N = 7, b = 0.2 N m s, Jm = 0.1 kg m2 , m = 5 kg, ` = 1 m, g = 9.8 m s−2 , u = 2 v, z(0) = [0 0 0]T , tfinal = 4 seconds. 3. A sample output has been provided for you to compare your results against. Exercise 2 Files There are 4 files relevant to Exercise 2: 1. lab2 ex2.m, the ‘main’ script for this exercise, which you must not modify. This script calls setupsim ex2.m (a function you will write) to import the simulation parameters, then calls the MATLAB built-in sim function to simulate rob manipulator.slx,

a simulink file which will be provided to you. Finally, it calls plotresults ex2.m (which you will also write) to plot the results of the simulation. You should run this file to verify that your functions are correct. 2. rob manipulator.slx, a complete simulink model of the 1-link robotic manipulator system. You must not modify this file. 3. ss model.m, a nearly-blank function you SHOULD complete. This function contains the state-space equations of the system. 4. setupsim ex2.m, a nearly-blank function you SHOULD modify. It must define the model parameters and simulation setings, 5. plotresults ex2.m, a nearly-blank function you SHOULD modify. It must plot the results of the simulation.

Write about one full page and discuss the AC vs DC distribution. Write your own conclusion and discuss your understanding.

Whether a d.c. machine runs as a generator or as a motor, which of the following quantity maintains the same direction?

Following the example in Section 3.10.1. numerically calculate the Fourier transform of the follow ing signals and compare them w ith the theoretical results in frequency domain:

Design a circuit to use an 800W device you bought from New York in Ankara. Calculate the voltages and currents that will occur with each step you design. Calculate the maximum reverse voltage values that the semiconductor materials you will use can withstand.

f we use a 3-phase half-wave controlled rectifier, how many percent can we control the output voltage, prove it mathematically.

1.Ethereum

 2.Dogecoin

Write a report covering and detailing two Blockchain applications while emphasizing on the

following aspects:

a. Main objective of the application

b. Operational architecture of the application

c. How much scalable?

d. Advantages and disadvantages

e. involvement of Socio-Technical aspects

Conclusion of the report by providing discussion on your findings plus could include the

powerful features of the applications by comparing it with other existing applications.

Further instructions:

- Do not use Wikipedia as neither source nor reference.

- Read articles from the books or the ones published in journals and conferences, or internet

articles for each topic and then rewrite those using your own words.

- Use IEEE style referencing, and make sure to properly reference any diagrams/

graphics.

The following task is to be demonstrated and assessed in in conditions that are safe and replicate the workplace. Noise levels, production flow, interruptions and time variances must be typical of those experienced in the telecommunications sustainability field of work and include access to:

Sites on which planning, design and integration of sustainability may be carried out. Relevant legislation, standards, guidelines, reports and equipment specifications and drawings.

A range of workplace documentation, personnel, information and resources including:

  • Compliance obligations.
  • Organisational plans.

For this task you are to complete the following activity to demonstrate your ability to integrate sustainability in ICT planning and design projects.

Prepare to integrate sustainability into the planning and design stages of an ICT project through completion of the following steps:

  1. Evaluate the suitable ICT projects into which sustainability can be integrated.
  2. Negotiate with the stakeholders to establish, and document, the extent to which sustainability is to be integrated.
  3. Conduct some research to identify the technology solutions that are suitable and applicable to the project.
  4. Based on the agreed standard, gather, and record, the power consumption data on the ICT equipment required for an energy audit.

Complete the following actions to devise strategies for incorporating sustainability into the ICT project:

  1. Determine short term technology solutions to achieve a reduction of power consumption, and oversee the implementation of these solutions.
  2. Initiate sustainable management principles that result in reduced environmental impact, and develop and implement policies and procedures to monitor and progress them.
  3. Establish KPIs on sustainability performance, and develop and apply policies for their regular review and improvement.
  4. Develop, document and incorporate policies and procedures for innovative planning and design rules for ICT projects, to ensure that they foster sustainability and environmental best practice.

To analyse energy audit data, complete the following actions:

  1. Within the scope of the ICT project, identify the energy usage and provide a detailed report.
  2. Estimate the potential energy savings and payback periods for recommended actions.
  3. Estimate, and record, the CO2 emissions for the nominated project.
  4. Evaluate the estimated CO2 emissions with comparable benchmarks.
  5. In order of priority, develop and document recommendations, giving the estimates of the implementation costs on the integration of sustainability for other ICT projects.

Determine the high-level output voltage of the RTL gate for a fan-out of 5. (b) Deter-mine the minimum input voltage required to drive an Rh . transistor to saturation when hrc = 20. (c) From the results in (a) and (b). determine the noise margin of the RTL gate when the input is high and the fan-out is 5.