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How would you use MATLAB to solve a system of linear equations?
In the above circuit, find the value of resistance between points A & B. | Electrical Engineering
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Solve the second-order homogeneous differential equation y'' - 5y' + 6y = 0.
Evaluate int1(2x-x^2)dx | Electrical Engineering
Given n resistors each of resistance R, how will you combine them to get the (i) maximum (ii) minimum effective resistance? What is the ratio of the maximum to minimum resistance? Answer : The two fundamental ways to combine resistors are in **series** and in **parallel**. These two configurations yield the maximum and minimum possible resistances, respectively. --- ### (i) Maximum Effective Resistance To obtain the * ... {min} = R/n$ | | **Ratio** | $R_{max} / R_{min}$ | $n^2$ |...
Mesh Analysis for Circuits Explained | Electrical Engineering
Why is a 3D CAD model more than just a "digital drawing" when used for engineering simulation, and what key information must be added to this geometric model to perform a meaningful analysis like a stress test? Answer : This question highlights the fundamental difference between defining an object's **form** (CAD) and predicting its **function** (Simulation). While a 3D CAD model is the essential starting point, it ... gradients, enabling them to identify and fix design flaws before a single piece of metal is cut....
Daisy chain arbitration | Electrical Engineering
Use Kirchhoff's Voltage Law (KVL) to find the current in a simple series circuit.
Alternating Current Production | Electrical Engineering
When to Use Star Connection and When to Use Delta ? Answer : ![][1] ![][2] [1]: https://electrical-engineering.app/?qa=blob&qa_blobid=2709696531258548398 [2]: https://electrical-engineering.app/?qa=blob&qa_blobid=3165450322949766875 ### **Part ... and single-phase) and unbalanced currents. | Balanced, high-power loads where reliability is critical. |...
Electrical Engineering Facts 8
In the circuit below, use a source transformation to determine Vo. ![][1] [1]: https://electrical-engineering.app/?qa=blob&qa_blobid=15669083920906828389 Answer : ![][1] [1]: https://electrical-engineering.app/?qa=blob&qa_blobid=4854655767405747567 --- ### **How to Use Source Transformation to Find Vo in a Circuit: A Step-by-Step Guide* ... voltage `Vo`. This example highlights why source transformation is an essential tool in **circuit analysis**....
Analysis of a Series RC Circuit | Alternating Current | Electrical Engineering
How are Fourier series used to analyze non-sinusoidal waveforms in electrical circuits?
1N34 Germanium Diode | Electrical Engineering
What is the greenhouse effect and how does it contribute to global warming?
3 Pin Plug #electricalengineering
How can the Internet of Things (IoT) be used to create a smart home automation system?
Maximum power transfer theorem with dependent source | Electrical Engineering
Why is "active listening" considered a skill that requires conscious effort, and how does it fundamentally differ from simply hearing someone speak or waiting for your turn to talk? Answer : The difference is one of **intent and engagement**. Hearing is a passive, physiological process of perceiving sound. Waiting for your turn to talk is a self-centered debate tactic. Active ... You gain a much deeper and more accurate understanding of the problem, leading to better solutions....
Current Divider Rule | Electrical Engineering
From a physics perspective, what makes a semiconductor like silicon fundamentally different from a conductor like copper or an insulator like glass, and how is this difference exploited to create the essential electronic component, the diode? Answer : The fundamental difference lies in the **electron energy band structure** of the materials, specifically the size of the **band gap**. This unique property of semiconductors allows us to precisely ... and off at will is the foundation of all digital logic and the entire modern electronics industry....
Using Thevenin's theorem, find the equivalent circuit to the left of the terminals in the circuit.
What are the fundamental limitations of traditional "hard-switched" PWM converters, and how do resonant or "soft-switching" techniques like Zero Voltage Switching (ZVS) and Zero Current Switching (ZCS) overcome these limitations to achieve higher efficiency and power density? Answer : This question addresses the critical challenge of **switching loss**, the primary barrier to increasing the operating frequency, and therefore the power density, of modern power converters. ** ... state-of-the-art applications like server power supplies, EV chargers, and renewable energy inverters....
How to Choose the Right Electrical and Electronics Equipment for Your Business | Business
If potential difference V applied across a conductor is increased to 2V , how will the drift velocity of the electron change? Answer : ### Short Answer If the potential difference V applied across a conductor is increased to 2V, the **drift velocity of the electrons will also double**. ### Detailed Explanation Let's ... the electric field, which doubles the force on the electrons, which doubles their average drift velocity....
SCADA (Supervisory Control and Data Acquisition) MCQs | Electrical Engineering
How to calculate winding of transformer? Answer : --- ### Part 1: The Core Concepts (The "Why") Before we jump into calculations, let's understand the key principles. #### 1. The Universal EMF Equation This is the heart of all transformer ... and between the windings and the core. If you are a beginner, start with low-voltage projects first....
Digital Electronics | Decimal with Fraction to Octal Number Example
Why is Fourier analysis important in applied mathematics? Answer : Fourier analysis decomposes complex signals into simpler sinusoidal components. It is crucial in signal processing, image compression (JPEG), solving partial differential equations (heat equation, wave equation), and data analysis....
Electric power formula | Electrical Engineering
State Maxwell's equations and briefly explain the physical significance of one of them.
Circuit Analysis: Impedances, Voltage, and Currents with Vector Diagram | Parallel AC Circuit
In designing an IoT application, what are the key trade-offs between processing data in the Cloud versus at the Edge, and can you provide a real-world example where each approach is clearly superior? Answer : This question addresses the fundamental architectural choice of "where the thinking happens" in an IoT system. The decision between Cloud and Edge computing directly impacts an application's ... data analytics, and centralized device management. This combination provides the best of both worlds....
GAS SENSOR Detector Module | Electrical Engineering
Explain the use of the following components in electrical wiring system and give specification of each: (i) MCB (ii) ELCB Answer : ### Introduction In any modern electrical wiring system, safety and protection are paramount. Devices like MCBs and ELCBs are critical safety components installed in a consumer unit (also known as a ... (lighting, sockets, etc.) | Protecting a group of circuits or an entire installation |...
International Day of Education: Recover and Revitalize Education for the COVID-19 Generation
Explain the use of following tools in carrying out electrical wiring installation: (i) Nose pliers (ii) Test lamps (iii) Crimping tools (iv) Cutter. Answer : General Introduction In electrical wiring, using the correct tool for the job is not just about efficiency; it is a fundamental requirement for safety and the quality of the finished installation. A poor ... Do not use them to cut steel wire or screws, as this will damage the cutting edges....
Rectangular to Polar form solved example | Electrical Engineering
Name any one material having a small value of temperature coefficient of resistance. Write one use of this material? Answer : **Material:** **Manganin** (an alloy of copper, manganese, and nickel) **Use:** Due to its very low temperature coefficient of resistance, it is used to make ** ... for electrical measuring instruments like ammeters and Wheatstone bridges, where a stable and predictable resistance is essential....
Problem on resistance and resistivity 1 | Electrical Engineering
Draw and explain the use of : (i) Combination plier (ii) Tester (iii) Wire Striper (iv) Hammer Answer : Cutter cum Insulation Remover : ![][1] [1]: https://electrical-engineering.app/?qa=blob&qa_blobid=7558183951160707100...
Norton's Theorem Example | Electrical Engineering
How does a wind turbine convert kinetic energy from the wind into electrical energy?
MCB (Miniature Circuit Breaker) Vs MCCB (Molded Case Circuit Breaker)
How does a smart grid differ from a traditional electrical grid in terms of communication and control?
Generation of Alternating Voltage | Electrical Engineering
How does a photovoltaic (PV) cell convert sunlight directly into electricity?
Alternating Current Waveform | Electrical Engineering
How is load flow analysis used in power system planning and operation?
Complex Conjugate | How to Find Conjugate of a Complex Number | 11 Class | Maths
How does an operational amplifier (Op-Amp) work as an inverting amplifier?
If the 12 Ohm resistor draws a current of 1 A as shown in the figure, the value of resistance R is
What is the basic principle behind how a RADAR system detects an object's range and velocity?
What is an Optocoupler and How Does It Work? | Electrical Engineering
How does a digital multimeter measure voltage, and what is its basic working principle?
What is Magnetic Flux Density (B) ? #magnetic #circuit #electricalengineering #physics
What is the multipath fading problem in wireless communication, and how does the Orthogonal Frequency-Division Multiplexing (OFDM) modulation scheme elegantly solve this problem, which was a major limitation for previous generations of mobile technology? Answer : This question addresses the single most challenging physical problem in mobile communication and the ingenious solution that underpins virtually all modern broadband wireless standards. --- ### **Part 1: The Problem - Multipath Fading and ... **4G LTE, 5G NR, and modern Wi-Fi (Wi-Fi 4/5/6/7)**....
Superposition Theorem Network Theory | Superposition Theorem Solved Example Problem | Circuits
How does a microcontroller, which operates exclusively with discrete digital values (1s and 0s), measure a continuous, real-world analog signal like the temperature from a sensor? Answer : The bridge between the analog real world and the digital world of a microcontroller is a crucial mixed-signal circuit called an **Analog-to-Digital Converter (ADC)**. Virtually all modern ... measurement like temperature, allowing a purely digital device to sense and react to the analog world....
Find the next two terms in the sequence. 31 , 32 , 37 , 62 , 187 , __ , __, ...
Explain with the help of a circuit diagram, how the value of an unknown resistance can be determined using a Wheatstone bridge? Answer : ![][1] [1]: https://electrical-engineering.app/?qa=blob&qa_blobid=407323477172242274 ### **Introduction** A Wheatstone bridge is an electrical circuit used for the precise measurement of an ... (R₃) at the balance point has been recorded, the unknown resistance Rₓ can be calculated precisely....
Alloy | Electrical Engineering
With suitable circuit diagram, show how emfs of 2 cells can be compared using a potentiometer? Answer : ![][1] [1]: https://electrical-engineering.app/?qa=blob&qa_blobid=16022041933233000659 ### **Principle of a Potentiometer** A potentiometer works on the principle that the potential drop ... -section. 4. The current in the primary circuit should be kept constant throughout the experiment....
BCD subtraction using 10's complement | Electrical Engineering
If the temperature of a good conductor decreases, how does the relaxation time of electrons in the conductor change? Answer : ### The Short Answer If the temperature of a good conductor decreases, the **relaxation time of electrons increases**. --- ### The Detailed Explanation To understand why, let's break ... **. This is why good conductors become even better conductors (less resistive) at lower temperatures....
AC circuits with resistance but no reactance | Electrical Engineering
What is Electromotive Force (EMF)? How is it different from potential difference? Answer : ### The Water Pump Analogy Imagine a water circuit with a pump and a water wheel. * **The Pump:** The pump does work on the water, lifting it up and giving it potential energy. It's the ... from a battery if you draw no current from it. The moment you use it, the terminal voltage drops slightly....
Electrical Engineering | Electrical Machine | DC motor | MCQ 5 | Electrical Engineering
Describe an experiment to determine the acceleration due to gravity (g) using a simple pendulum.
Basic Circuit Elements | Resistor, Inductor, Capacitor, Load Resistor, Variable Resistor, Battery
What are the standard safety procedures to follow when working on high-voltage equipment?
Electrical Engineering Facts 53
Write a Python script to print all even numbers from 1 to 20.
Y parameter example | Electrical Engineering
Describe the role of an Analog-to-Digital Converter (ADC) in an embedded system that measures temperature.
Electrical Machine DC motor brake test numerical | Electrical Engineering
Write a short paragraph describing your favorite hobby, paying attention to grammar and sentence structure.
Electrical Engineering Facts 3
Why is the Fourier Series—the ability to represent a complex periodic function as a sum of simple sine and cosine waves—considered one of the most powerful tools in applied mathematics and engineering? Answer : The power of the Fourier Series lies in its ability to transform a problem from the often-complex **time domain** into the much simpler and more intuitive **frequency domain**. It acts like a ... ) is impossible. The sharp corners, which rely on the highest frequencies, will always get rounded off....
MCQ on Fuse | Electrical Engineering
In a Hall Effect experiment, a voltage is measured perpendicular to both the current flow and the magnetic field. What is the physical origin of this "Hall Voltage," and what two crucial properties of a semiconductor material can be determined by measuring it? Answer : The physical origin of the Hall Voltage is the **Lorentz force** acting on charge carriers as they move through a magnetic field. This simple experiment is profoundly important because it ... **carrier concentration `n`**, a fundamental parameter that dictates the material's electrical properties....
What is the peak value of a sinusoidal waveform | Electrical Engineering
What is the Fundamental Theorem of Calculus, and why is it considered "fundamental" to the study of calculus? Answer : The Fundamental Theorem of Calculus is the central pillar that connects the two main branches of calculus: **differentiation** and **integration**. In essence, it rigorously proves ... This relationship is the foundation for countless applications in physics, engineering, economics, and statistics....
In the circuit shown below, the current through the inductor is | Electrical Engineering
In metrology, what is the fundamental difference between accuracy and precision, and why is it possible—and often dangerous—for a measurement to be highly precise but not accurate? Answer : The fundamental difference is that **accuracy** describes the closeness of a measurement to the true value, while **precision** describes the closeness of repeated measurements to each ... . Understanding that a measurement can be consistently wrong is a foundational principle of metrology....
Kirchhoff’s Laws : Calculate Vo in the circuit of Fig Using KVL | Electrical Engineering
Why can a DC motor run on a DC supply, but a transformer will be damaged if connected to the same DC supply? Answer : The reason lies in their fundamentally different operating principles: **Back EMF** in a DC motor versus **Mutual Induction** in a transformer. **1. The DC Motor: Operation via Back EMF** A ... from an AC supply and has no internal mechanism to limit a DC current, leading to its rapid destruction....
Complex Number Problem Solved Example | Electrical Engineering
Classify the hydro-electric plants according to the head and load basis. Answer : Hydro-electric plants are classified based on several criteria, with the available **water head** and their **role in the electrical grid (load)** being two of the most important. Here is a detailed ... **high-head plant** could be a traditional power plant or a **pumped-storage peaking plant**....
Series and parallel capacitor problem 8 | Electrical Engineering
Compare the casing / capping system of electrical wiring to concealed system of electrical wiring. On the basis of look, cost, life, safety retentivity of material and suitability for locations. Answer : This comparison covers two of the most common methods for electrical wiring in buildings. Here is a detailed comparison of the Casing/Capping system and the Concealed Conduit system based on your ... and safety to the property. It is the standard for modern residential and commercial construction....
Calculating Impedance, Current, Power Factor and Absorbed Power in an AC Coil: A Step-by-Step Guide
Six lead-acid type of secondary cells each of emf 2.0 V and internal resistance 0.015 Ohm are joined in series to provide a supply to a resistance of 8.5 Ohm . What is the current drawn from the supply and its terminal voltage? Answer : ### Given Data: * Number of cells, **n = 6** * EMF of each cell, **E_cell = 2.0 V** * Internal resistance of each cell, **r_cell = 0.015 Ω** * External resistance (load), **R = 8.5 Ω ... The current drawn from the supply is **1.40 A**. * The terminal voltage of the supply is **11.9 V**....
Determine Yeq for the circuit in Fig | Admittance | Impedance | Electrical Engineering
A battery of emf 10 V and internal resistance 3 Ohm is connected to a resistor. If the current in the circuit is 0.5 A, what is the resistance of the resistor? What is the terminal voltage of the battery when the circuit is closed? Answer : ### Given Information: * **EMF of the battery (E):** 10 V * **Internal resistance (r):** 3 Ω * **Current in the circuit (I):** 0.5 A --- ### 1. What is the resistance of the ... text{V}$ Both methods give the same result. **Answer:** The terminal voltage of the battery is **8.5 V**....
Norton's Theorem with Dependent Source Problem | Electrical Engineering
Three identical cells, each of emf. 2V and unknown internal resistance are connected in parallel. This combination is connected to a 5 ohm resistor. If the terminal voltage across the cell is 1.5 volt. What is the internal resistance of each cell? Hence define the internal resistance of a cell? Answer : ### Part 1: Calculating the Internal Resistance Here's how we can find the internal resistance of each cell. **Given Data:** * Electromotive force (EMF) of each cell, E = 2 V * Number of identical cells ... . * **I** is the current flowing from the cell. * **r** is the internal resistance....
Soldering Station | Electrical Engineering
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