Homework answers / question archive / ELECTRICAL AND ELECTRONIC ENGINEERING PROGRAMME Assignment: Analyse DC & AC circuits using kirchhoff’s laws and network theorems   SAFETY REGULATIONS AND GUIDELINES FOR STUDENTS   Students performing experimental work in the Engineering laboratory must follow and abide by the following safety regulations and guidelines

ELECTRICAL AND ELECTRONIC ENGINEERING PROGRAMME Assignment: Analyse DC & AC circuits using kirchhoff’s laws and network theorems   SAFETY REGULATIONS AND GUIDELINES FOR STUDENTS   Students performing experimental work in the Engineering laboratory must follow and abide by the following safety regulations and guidelines

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ELECTRICAL AND ELECTRONIC ENGINEERING PROGRAMME

Assignment: Analyse DC & AC circuits using kirchhoff’s laws and network theorems

 

SAFETY REGULATIONS AND GUIDELINES FOR STUDENTS

 

Students performing experimental work in the Engineering laboratory must follow and abide by the following safety regulations and guidelines. Students must complete a safety declaration form before they are allowed to work in the laboratory.

 

GENERAL

• Students are not allowed to enter the laboratory without the permission of the lecturer or laboratory assistant.
• Unauthorized experimental work in the laboratory is strictly forbidden.
• Prior to the use of laboratory out of timetabled periods, students must apply for usage from relevant laboratory staff.
• Students are not allowed to work alone in the laboratory.
• Bags and books must not be left on benches or on stools and should be placed in designated area. Do not block passageways or fire exits.
• All working spaces must always be kept clean.
• Long hair, ties, jewellery and clothing must never be allowed to hang loose, since any of these items can easily become entangled in the moving parts of machinery, and hence cause serious injury.
• Suitable clothing must be worn; long trousers or jeans are recommended for boys and dresses, slacks or jeans for girls. In particular, sleeveless t-shirts and sleeveless blouses are prohibited. 
• Students must wear covered footwear during laboratory and workshop sessions. Sandals, open-toed shoes, slippers or similar footwear are prohibited. Students may be refused entry to the laboratory or workshop if not in proper footwear.
• Storage and/or consumption of food and drink, smoking and the application of cosmetics in the laboratory are not allowed.
• Indiscipline in the laboratory or workshop (e.g., whistling, horseplay etc.) will not be tolerated.
• No reagent, solution or apparatus is to be removed from the laboratory without approval from the lecturer.
• Do not pour waste down the sink unless authorized to do so by your lecturer.
• Defective equipment or broken glassware must be reported to the lecturer or lab assistant.
• Do not run in the laboratory or along corridors. Exercise care when opening and closing doors on entering and leaving the laboratory.
• Laboratory doors must be kept closed at all times during practical classes.

OBJECTIVES:

After completing the assignment, you should be able to:

 

? Design an AC Circuit and analyse using kirchhoff’s laws and network theorems.

 

INTRODUCTION:

In this assignment, you will  design an AC Circuit with some design criteria and explore the kirchhoff’s laws and network theorems for the AC Circuit. Then, validate the Thevenin’s and Norton’s Theorem. The design circuit will be constructed and measured in the virtual  laboratory TinkerCad. The theorical calculation of the circuit  and measured circuit response values will then be compared. Next, the Thenenin’s and Norton’s Theorem is used to find the Thevenin and Norton equivalent circuit and this circuit is constructed. The Thevenin and Norton equivalent simulation circuit response will then be compared with the design circuit where the real, reactive, and apparent power at the load is calculated.

 

EQUIPMENTS / MATERIALS:

In view of COVID-19 Pandemic, the assignment this semester (August 2021) will be conducted online. Please create a free account at https://www.multisim.com and www.tinkercad.com. You can use any of the following components from the website provided: 

• Resistors with any determine values 
• Capacitors with any determine values • Inductor with any determine values
• Function generator.
• DC Power Supply.
• Oscilloscope.
• Multimeter.
• Breadboard.

 

ASSIGNMENT:

Design a circuit that consists of resistors, inductors, capacitors, and an AC power source with the following criteria:

1. Contains at least 2 components in parallel and 3 components in series. This does not include the power source.
2. No component or group of components are in parallel with a short circuit.
3. No two component should have the same value or a zero value.

Next, choosing one component as the load, analyze the circuit designed and determine:

1. The voltage across the load using Thevenin’s theorem.
2. The current through the load using Norton’s theorem.
3. The real, reactive, and apparent power at the load.

Show the calculation used to obtain each of the values and construct your circuits in TinkerCad to validate your results in a practical domain.

REPORT:

Assignment should be submitted online in a standard report format in PDF filetype, including the following sections:

1. Cover Page: Name, student ID, title of assignment, date of submission
2. Second Page: Marking Rubric
3. Abstract (less than 200 words)
4. Introduction
5. Materials and Methods
   1. Your design circuit
   2. Procedure on all the construction of your circuit
   3. Discussion of design procedures / methods
6. Results and Discussions
   1. Theoretical calculation of the circuits and the practical attained results.
   2. The voltage across the load using Thevenin’s theorem.
   3. The current through the load using Norton’s theorem.
   4. The real, reactive, and apparent power at the load.
   5. Screenshot of implementated circuit from TinkerCad
   6. Provide your Multisim and TinkerCad link for examination purpose.
   7. Discussion of design results 
7. Conclusion
8. References

• Penalty of 10% final score will be applied on each day for late submission of the report.

 

MARKING RUBRICS:

The total score of the assignment will be 100, which will be then converted to 20% of the final grade. The assignment will be assessed with the following rubrics:

 

REPORT	Score	Outstanding	Mastering	Developing	Beginning
Format	/ 10	9-10	7-8	5-6	0-4
Abstract and Introduction	/ 20	17-20	13-16	9-12	0-8
Materials and Methods	/ 20	17-20	13-16	9-12	0-8
Results and Discussions	/ 40	33-40	25-32	17-24	0-16
Conclusions	/ 10	9-10	7-8	5-6	0-4
ASSIGNMENT SCORE	/ 100
FINAL SCORE	/ 20

 

• Please insert this rubric after the cover page in your report.