FIRST GRADING
NARRATIVE REPORT ON LESSON 1 and 2
I gained knowledge from the classes in several ways. Our instructor went into greater detail on the fundamentals of electricity and provided us with exercises that allowed us to apply what we had learned. We also comprehended the fundamental electrical principles that underlie many modern, useful applications of electricity. I was able to retain the basic electrical quantities like resistance (R), voltage (V), and current (I) from this session. In this lecture, Ohm's law was also brought to my mind. The foundational concepts of circuit theory serve as the foundation for electrical engineering. The behavior of electrical components and circuits is described by these relationships, which enables engineers to create and evaluate intricate systems.
I recalled two laws in this topic. Ohm's Law, which asserts that the current through a conductor is directly proportional to the voltage applied across it, is the most fundamental relationship in circuit theory. Understanding the behavior of resistors, capacitors, and inductors in circuits is based on this law. Kirchhoff's Laws, which outline how currents and voltages are distributed throughout a circuit, are another significant relationship. Engineers can predict the behavior of intricate circuits with numerous components according to these rules.
Also, I learned that understanding the fundamental relationships in circuit theory is crucial to comprehending the behavior of electrical components in circuits. This serve as the cornerstone for developing and deciphering the intricate systems that drive our contemporary world.
Moreover, I realized that electrical engineering's essential ideas include direct current circuits, Ohm's Law, and power energy. An electrical circuit type known as a direct current circuit has a unidirectional flow of electric charge. On the other side, Ohm's Law explains how voltage, current, and resistance interact in a circuit. According to this law, a conductor's current is inversely proportional to its resistance and directly proportional to the voltage put across it.
The amount of work an electrical system performs in a given amount of time is referred to as power energy. Ohm's Law can be used in direct current circuits to determine power energy by multiplying voltage and current. This connection illustrates how variations in voltage or resistance can have an impact on power usage.
Direct current circuits and Ohm's Law can be compared and contrasted as crucial elements for comprehending power energy in electrical systems. While Ohm's Law sheds light on how many circumstances affect this flow, direct current circuits only describe the passage of electric charge in one direction. In the end, these ideas assist engineers in creating effective electrical systems that optimize production while avoiding waste.
The resistance of a material is a crucial factor in determining its usefulness in various applications. The resistance of a material is affected by several factors, including the type of material, its dimensions, and temperature. Firstly, the type of material plays an essential role in determining its resistance. Materials with high resistivity such as ceramics and glass have higher resistance than metals like copper and aluminum. Secondly, the dimensions of the material also affect its resistance. As the length of a wire increases, so does its resistance. Lastly, temperature also affects the resistance of materials. In general, as temperature increases, so does the resistance of most materials. This is due to increased collisions between electrons and atoms at higher temperatures.
In conclusion, understanding the factors that affect the resistance of materials is crucial for selecting appropriate materials for various applications. By considering these factors carefully, engineers can design systems that are efficient and reliable while minimizing energy losses due to resistive heating.
MIDTERM GRADING
NARRATIVE REPORT ON LESSON 3
In this lesson, we studied the basic concepts of alternating current circuits and related them to the previous topics that we have already studied. The inductor, capacitor, and resistor—three fundamental parts that serve as the foundation for modern technological advancements, particularly in the electrical and electronic domains—were joined, and their features were further investigated.
The idea of energy flowing in two directions, as opposed to simply one, captivated me. Our instructor discussed how AC power is more effective than DC power at transmitting electricity over long distances. I was very fascinated by the science as we learned more about the subject. The various parts of an AC circuit, including resistors, capacitors, and inductors, were covered in class. In order to fully comprehend how AC circuits operate, we also learned the mathematical equations that control them. There were definitions of key concepts as well as comparisons and contrasts of some of them. Electrical circuits using direct current (DC) and alternating current (AC) operate in distinct ways. While AC circuits use a sinusoidal waveform, DC circuits use a constant voltage. While it regularly changes in AC circuits, the direction of the current is constant in DC circuits.
The ability of AC circuitry to send signals over long distances with less energy loss than DC circuitry is one of its benefits. This is so that AC power may be more easily transmitted over long distances since transformers can be used to raise or lower the voltage. Additionally, it is simple to transform AC power into other types of energy, such as heat or mechanical energy. DC circuitry, on the other hand, is more effective for several uses, including batteries and electronic gadgets. This is so that they can function properly, which necessitates a consistent voltage.
In conclusion, based on the intended usage, both AC and DC circuitry offer advantages and disadvantages. DC power is more effective for electrical devices and batteries, whereas AC power is better suited for long-distance transmission and conversion into various types of energy.
The most thrilling aspect of our studies on AC power was when we got to do our exercises as we applied the principles of the lesson . We created straightforward circuits out of resistors and capacitors, and we observed the alternating current they generated. It was incredible to witness something that appeared to be so abstract come to life in front of my eyes. All things considered, learning about alternating current was a very eye-opening experience that piqued my interest in electrical engineering.
I recall my first exposure to AC loads, reactance, and impedance as an engineering student. It was a difficult subject that took a lot of work to comprehend. But once I understood the idea, it became one of my favorite subjects. I can still picture myself in class, listening to my professor explain how reactance distinguishes AC loads from DC loads. Reactance is an AC circuit's resistance to current flow caused by capacitance or inductance. Impedance is the complete resistance that an AC circuit provides to the passage of current. I can still picture myself working for hours on problems involving impedance and reactance calculations for various kinds of circuits. It was amazing how a small adjustment to the circuit's design could change the impedance.
I now realize how much I learned about perseverance and hard effort from studying AC loads, reactance, and impedance. Additionally, it assisted me in acquiring problem-solving abilities that have served me well in my engineering profession.
FINAL GRADING
NARRATIVE REPORT ON LESSON 4 and 5
We learned about alternating current circulatory applications and, in particular, the fundamental ideas that guide the operation of a transformer. For the generation, distribution, and transportation of electricity, engineers utilize design. A poorly constructed electrical system has the drawback of being harmful to both human and material wellbeing. An engineer's top priority is safety because we are in charge of the design. To be effective in our area of expertise, it is crucial that we comprehend electric generation.
Whether it is power from a home or a substation, it is simple to convert it into the finished product. You will have a good electronic system if this is thoughtfully built and designed. I learned that power generation is the process of creating electricity from a variety of sources, including renewable energy sources like wind and solar power, natural gas, coal, and nuclear energy. The growth of contemporary society has been significantly influenced by our ability to produce energy. We are now able to use technology to communicate with one another, power our devices, and light our homes. The first commercially successful electric light bulb was created by Thomas Edison in the late 19th century, which marks the beginning of modern power generation. Since then, there have been tremendous technological breakthroughs that have made it possible for techniques of electricity generation to become more effective and environmentally friendly.
Electrical safety is a crucial component of everyday life. It entails using and maintaining electrical equipment properly to avoid mishaps and injury. Electrical safety can be divided into two categories: electrical safety in the home and electrical safety in the workplace. The safe usage of home appliances including refrigerators, washing machines, and televisions is the main focus of home electrical safety. To avoid electric shocks or fires, it entails making sure that these items are placed, grounded, and maintained appropriately.
On the other side, workplace electrical safety focuses on the secure usage of commercial machinery and equipment. This entails making certain that workers are instructed in proper handling practices, that protective equipment is worn as required, and that equipment is routinely inspected for flaws or failures.
While preventing accidents and injuries is a goal shared by both types of electrical safety, their scope and focus are different. While workplace electrical safety focuses on protecting workers in an industrial context, home electrical safety is primarily concerned with safeguarding people in a domestic environment. To provide a secure workplace for everyone engaged, electrical safety must be prioritized regardless of the situation.