Letter of Introduction:

Mark-Jason Amevor

40 W Mosholu Pkwy

New York, NY 10468

Professor Santonyo Bangali

The City College of New York (CUNY)

English Department 6/219

160 Convent Ave

New York, NY 10031

Dear Professor Bangali,

I hope you’re doing well. I’m writing this letter to introduce my partner, Brandon Barrales. He’s a second-year student majoring in Electrical Engineering. He’s taking Writing for Engineering mainly because it’s a requirement for his major, but nevertheless, he appreciates the skills he will learn from the course.

In high school, there weren’t many opportunities specifically relating to engineering for Brandon, but he still managed to have a fulfilling experience in his time spent there. He was the captain of his soccer team, a role that taught him the importance of leadership and teamwork. In addition, he tutored students in algebra. Brandon is interested in EE because of its practicality in terms of the job market, as in other fields, more education is needed in order to secure a job.

On his own time, Brandon has made a mousetrap racecar and his own Rubix cube. He also conducted research over the summer on three-bladed wind turbines and their effectiveness under certain conditions, like in water and with obstacles. These projects taught him that engineering was more than just math and physics: You also need skills regarding technology, you need to experiment, see where your model can be improved on, and implement those changes.

As for his future goals, Brandon intends to continue his education, working his way to a master’s degree and ultimately, his PhD. While pursuing his degrees, he plans to work at the Redmond, Washington branch of Microsoft. Working there would fulfill his love of quantum computing and mathematics with the work being conducted there. He plans to build up to these goals during his time at CCNY by researching topics and getting internships that align with these goals.

All in all, Mr. Barrales is a very motivated student who is glad to be in your class, and I thank you for taking the time to read this letter on his behalf.

Wishing you the best,

Mark-Jason Amevor

SOP 1:

SOP: Nodal Circuit Analysis

ENGL 21007 – Writing for Engineering

Mark-Jason Amevor, Allen Ayriev, Brandon Barrales, Yakov Herz, Suly Jose

Approved by:  Brandon Barrales

Purpose: The purpose of this SOP is to provide a universal technique for analyzing circuits, including those with complex configurations and multiple elements such as resistors, capacitors, and inductors.

Scope: This SOP applies to all circuit/integrated circuit designers

Definitions:

• Node: a point on the circuit that connects two or more elements those elements being resistors, inductors, capacitors, voltage sources (like batteries) current sources (AC OR DC
• Ground: a location where there is OV going through a reference point of sorts
• Mesh: a loop formed between branches and nodes
• Kirchoff current law (KCL): total current entering node equals current leaving node
• Kirchoff voltage law (KVL): if you were to add up the voltages in a closed loop they would add to zero 
• Resistor: opposes flow of electric current converts Electrical energy into heat
• Capacitors: stores energy in an electric field
• Inductors: stores energy in a magnetic field

Responsibility: Identify smallest closed loop mesh in a circuit and use Kirchhoff’s voltage law to solve for a system of equations

Materials/Equipment: Pen/Paper. If working on a complex/large-scale circuit, use of a SPICE circuit simulator may be needed.

Safety Precautions: N/A, not working on a live circuit

Procedure:

1. Given a circuit, first choose one node to be a ground.
2. For each node with an unknown voltage, apply Kirchhoff’s Current Law (KCL).
   1. Label the voltage of each node with respect to your ground node.
   2. The total current entering the node must be equal to the total current leaving the node, so first you must find the currents entering and leaving the node.
   3. Guess the directions of the flow of current.
   4. Once you do, you can apply Ohm’s Law (Current = Voltage/Resistance) and solve for the unknown voltage.
3. After the unknown voltage is found, you can find the voltage drop across each resistor leading to the node, as well as the actual current by using Ohm’s Law.

Troubleshooting Tips:

• Label a node as ground otherwise equations will become unsolvable.
• Check sign conventions if it’s negative it just means the positive direction is opposite this comes down to personal preference either convention works
• KCL sum for each individual node should be 0
• Before writing a set of equations see if you could condense a circuit where its parallel or in series it makes analyzing circuits much simpler

Conclusion:

Ultimately, the purpose of analyzing this complex circuit was to demonstrate how Kirchhoff’s Current Law (KCL) and Kirchhoff’s Voltage Law (KVL) work together within the overall framework of circuit analysis. KCL ensures that the flow of current is properly balanced at each node, while KVL confirms that the sum of voltages around each loop is consistent. When combined, these laws provide a universal technique for systematically solving even the most complex circuits, reinforcing the idea that every circuit—no matter how intricate—follows the same fundamental principles.

Revision History:

Date:	Version:	Changes Made By:	Approved By:
Sep. 2, 2025	1.0	Mark-Jason Amevor	Mark-Jason Amevor
Sep. 3, 2025	2.0	Brandon Barrales	Brandon Barrales

SOP 2:

SOP: Motor Control Panel Inspection

ENGL 21007 – Writing for Engineering

Mark-Jason Amevor

Approved By: Mark-Jason Amevor

Purpose: The purpose of this SOP is to provide a methodology to examine an MCP’s systems and make sure it is safe and ready to use.

Scope: This SOP is meant to be used by any inspector/ electrician

Definitions:

•  Motor Control Panel: Also known as an MCP, it is a device that provides power to multiple electrical motors
• Bus: A communication system that transfers data between components.
• Megger test: A test performed to check insulation resistance.

Responsibility: It is the responsibility of the inspector to ensure the functional and structural integrity of the system, panel and any related equipment.

Materials/Equipment:

• Proper protection from electrical shock
• Wire stripper

Safety Precautions: There is risk of electrical shock if the SOP if proper protection is not used.

Procedure:

• Phase 1: Visual Inspection
  • Inspect the MCP, making sure to check for any potential flaws or damage.
  • Test the MCP to make sure all indicator lights are functional.
  • Inspect the bus for any wear, damage, or missing insulation.
  • Check to make sure each component is clean and undamaged.
• Phase 2: Mechanical Inspection
  • Examine the alignment and flexibility of the breakers
    • Repeat for the rails, guides, and shutters.
  • Unplug the breakers and test their compatibility.
• Phase 3: Electrical Inspection
  • Perform a Megger test on the main bus for Phase to Phase and Phase to Ground insulation resistance.
  • Test the protection relays for functionality

Troubleshooting Tips: If any component fails the visual or mechanical inspection, a report should be filed.