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What is a Real-Time Operating System (RTOS), and why is it frequently used in embedded systems instead of a general-purpose operating system like Linux or Windows? Answer : The answer lies in one critical concept: **determinism**. While a general-purpose OS is designed for high throughput and fairness, an RTOS is designed for predictability and meeting strict timing deadlines. ... system where **failing to complete a task on time is considered a total system failure.**...
Hindi : Diode | Basic Electronics | Electronics Engineering | Electrical Engineering
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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....
Single Phase Induction Motors MCQ | Electrical Engineering
What is the role of a FACTS device like a STATCOM in a power transmission system?
Sinusoids to Phasors Conversion | Phasors | Sinusoids | Solved Examples Problems
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....
Impedance Parameters of Two Port Network Solved Example | Z Parameter Example | Electric Circuits
What is meant by power system stability and why is it important?
9, 10, 13, 24, 37, 66, 97, ? | Electrical Engineering
What is the basic principle behind how a RADAR system detects an object's range and velocity?
Thevenin Theorem | Electrical Engineering
From a fundamental engineering mechanics perspective, what is the primary difference between a beam and a shaft, given that both are often long, slender components used in structural and mechanical systems? Answer : The primary difference lies in the **type of load they are designed to resist** and, consequently, the **purpose they serve**. A **beam** is designed to resist **bending loads**, while a ... it supports. In such cases, engineers must analyze the **combined stresses** from both bending and torsion....
2x2 matrix problem 2 | Electrical Engineering
In the context of green building and energy conservation, what is the fundamental difference between R-Value and U-Value, and why is one typically used for individual materials like insulation, while the other is used for complex assemblies like windows? Answer : The fundamental difference is that they are mathematical reciprocals of each other, measuring opposite things: **R-Value measures resistance to heat flow**, while **U-Value measures the rate ... envelope that conserves energy by keeping heat inside during the winter and outside during the summer....
Impedances in a parallel circuit | Electrical Engineering
What is meant by "harmonics" in an electrical system and what problems can they cause?
Thevenin Theorem Problem (Easy Example) | Electrical Engineering
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)**....
Rules for Binary Addition | Electrical Engineering
What is the main difference between a rectifier and an inverter in power electronics? Answer : A rectifier converts AC (Alternating Current) → DC (Direct Current). It is used in power supplies, battery charging, and DC motor drives. Example: diode bridge rectifier. An inverter converts DC ... , wind), UPS systems, and variable-frequency drives. Example: PWM (Pulse Width Modulated) inverter....
Alternating Current | A capacitor of unknown value and an inductor of 0.1H and a resistor of 10 Ω
How can the Internet of Things (IoT) be used to create a smart home automation system?
Mesh Analysis Example | Electrical Engineering
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....
Current Division Rule Solved Example | Electrical Engineering
A steady current flow in a metallic conductor of non-uniform crosssection. Which of these quantities is constant along the conductor: current, current density, electric field, drift speed? Answer : Here is a detailed explanation for each quantity: ### 1. Current (I) * **Why it's constant:** The term "steady current" implies that the rate of flow of charge ($I = dQ/dt$) is constant. Due to the ... ($v_d$)** | Not Constant | $v_d = I/(nAe)$. Since A is not constant, $v_d$ is not constant. |...
Split phase induction motor | Electrical Engineering
How are Fourier series used to analyze non-sinusoidal waveforms in electrical circuits?
Nodal Analysis AC Circuit | Sinusoidal Steady State Analysis Nodal Analysis | Electrical Engineering
Why concentrating collectors are used in solar power plant. Answer : Because of following advantages concentrating type collector are used in solar power plant: - 1. Temperature: Temperature obtained is high because absorber area is less and collector/reflector area is ... results: As tracking system is used better results are obtain than flat type collector. ...
MCQs on Magnetic Circuits | Electrical Engineering
List the types of turbine used in hydro power plant. Answer : The selection of a specific turbine for a hydropower plant depends primarily on two factors: * **Water Head:** The vertical distance the water falls from the reservoir to the turbine. * **Flow Rate:** ... | Very Low (2-20m)| High to Very High| Generator and turbine in a submerged pod. |...
In phase and out of phase | Electrical Engineering
Describe the function of an inverter in a power electronics system.
Equivalent Resistance Problems | 15 Solved Examples on How to solved series parallel resistances ?
Explain Ohm's Law and its significance in circuit analysis.
Inductor #inductor #electricalengineering #physics
Do conventional current and electron current flow in the same direction in an electric circuit? Answer : ![][1] [1]: https://electrical-engineering.app/?qa=blob&qa_blobid=13686190518983378217 The short answer is: **No, they flow in opposite directions.** Here is a detailed breakdown of why: ... what's happening inside the wire, you need to think about **electron current (negative to positive)**....
Resistance and Resistivity Explained in Details | Electrical Engineering
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....
Source transformation 7 | Electrical Engineering
What is the primary function of a circuit breaker in an electrical system? Answer : It Cuts the power off in any fault in the circuit such as overloading to protect appliances....
The lightbulb in Fig is rated 120 V, 0 75 A Calculate Vs to make the lightbulb
Explain the reasons for failure of gaseous and solid dielectric materials used in electrical engineering application. Answer : ### **Introduction to Dielectric Failure** A dielectric material is an electrical insulator that can be polarized by an applied electric field. Its primary function in electrical engineering is to ... Often a slow, aging-related process - Highly sensitive to impurities, voids, and moisture |...
Complex Number Solved Example | Electrical Engineering
State the insulating materials used in motor. Write temperature class and withstand temperature ranges for them. Answer : ### The Importance of Motor Insulation Motor insulation is a critical system of materials that prevents electrical shorts and ensures the motor's longevity and reliability. It prevents current from leaking ... and reliably operate up to the maximum temperature of that class (155°C for Class F)....
Electrical Engineering | Electrical Machine | DC motor | MCQ 2 | 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 |...
What are the advantages and disadvantages of wave energy | Electrical Engineering
What is the difference between a radial and a ring main electrical distribution system?
Thyristor Controlled Reactor (TCR) | Electrical Engineering
What is the difference between an open-loop and a closed-loop control system?
Hindi : Determine the total current drawn from the supply | AC Series Parallel Circuits Example
What is the purpose of a substation in an electrical power grid?
Electrical quantities
What is the function of a rectifier in a power supply?
Find unknown impedance Z in the network of fig. | Impedance and Admittance | Hard Problem
How does a smart grid differ from a traditional electrical grid in terms of communication and control?
Draw complete vector diagram. | Single Phase Parallel AC Circuit | Electrical Engineering
Explain the choice of size and number of generator units in a power plant. Answer : --- ### The Fundamental Trade-Off At its core, the decision boils down to a trade-off between two main approaches: 1. **A Few Large Units:** This approach leverages **economies ... designed with multiple, fast-ramping units to complement the variability of wind and solar power on the grid....
thevenin equivalent circuit with dependent source | Electrical Engineering
What is the greenhouse effect and how does it contribute to global warming?
Step by Step Norton's Theorem Solved Example Problem | Norton's Theorem Statement Equivalent Circuit
How does a digital multimeter measure voltage, and what is its basic working principle?
RC parallel circuit | 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....
Problem on resistance and resistivity 5 | Electrical Engineering
What is the fundamental difference between Greenhouse Gases (GHGs) like carbon dioxide and Criteria Air Pollutants like sulfur dioxide, and why do they require different mitigation strategies even though they often come from the same source, such as a power plant? Answer : The fundamental difference lies in their **mechanism of harm** and the **scale of their impact**. Greenhouse gases cause a **global, long-term** problem by altering the Earth's ... compliance with local air quality laws but still be a significant environmental concern from a climate perspective....
Electric circuit and magnetic circuit | Electrical and Electronics 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....
Explain how technical losses can be reduced by use of energy | Electrical Engineering
What is the difference between electrical Power (kW) and electrical Energy (kWh), and why do industrial consumers get penalized for having a low Power Factor even if their energy consumption remains the same? Answer : This question touches on the fundamental economic and technical aspects of utilizing electrical energy. The answer lies in understanding what you are billed for versus what the utility company must actually ... strain on the grid, minimizes energy losses, and frees up capacity for other customers....
Basic Electrical MCQ | 14 | Electrical Engineering
Why is electrical power transmitted at high voltage and low current? Answer : Power loss in transmission lines is given by: $$ P_{\text{loss}} = I^2 R $$ where $I$ is the current and $R$ is the line resistance. * If power is transmitted at **low voltage**, ... kV) using **step-up transformers** for transmission, and then step it down near consumers for safe distribution. ...
Transformer on DC | Electrical Engineering
What is the difference between stress and strain in a mechanical component?
Circuit, Circuit elements, Open Circuit, Closed circuit, Short circuit, Resistors in series,Parallel
What is the difference between isometric and orthographic projections in technical drawing?
LinuxKernel Architecture | Electrical and Electronics Engineering | Electrical Engineering
What is the difference between fixed costs and variable costs in an engineering project?
Norton's Theorem Solved Example Problem | Norton's Current Source | Norton's Equivalent Circuit
What is the difference between accuracy and precision in measurement?
Maximum power transfer theorem with dependent source | Electrical Engineering
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....
Series and parallel capacitor problem 10 | Electrical Engineering
In C++, what is the fundamental problem that the virtual keyword solves when working with inheritance and pointers, and what is the practical difference in behavior when a base class function is declared with versus without it? Answer : The `virtual` keyword solves the critical problem of **static vs. dynamic binding**, enabling **runtime polymorphism**, which is arguably the most powerful feature of Object-Oriented Programming. In simple terms, `virtual` ... NOTE: No 'virtual' keyword here void draw() { std::cout ...
V-I characteristic of STATCOM | 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....
If the emf is represented by the equation e = 25 sin (314 t), what is its amplitude, R.M.S. value,
What is the fundamental difference in the physical mechanism and material structure between a Light Emitting Diode (LED) and a Laser Diode, given that both are semiconductor p-n junction devices that convert electricity into light? Answer : The difference lies in the nature of the photon emission process they utilize and the physical structure required to support that process. An LED relies on **Spontaneous Emission** to produce incoherent light, ... data | Fiber optics, barcode scanners, laser pointers, Blu-ray/DVD players |...
Induction Motor MCQs MCQ | Electrical Engineering
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....
The process of a coal fired power plant to convert coal into electricity. | Electrical Engineering
What is the difference between analog and digital instruments in electrical measurement? Answer : Analog instruments use a continuously moving pointer or needle to represent the measured quantity. Example: moving-coil ammeter, analog voltmeter. They are simple and give a visual trend but have lower ... and can store or process data, but they may be costlier and require power supply/electronics....
Software used to drive microprocessor-based systems is called | Electrical Engineering
What is the difference between a diode and a transistor in electronics? Answer : A diode is a two-terminal device that allows current to flow in only one direction. It is mainly used for rectification (converting AC to DC), voltage regulation, and protection ... input current/voltage, making it essential in signal amplification, digital logic circuits, and power control....
Karnaugh Map SOP Minimization 4 | Electrical and Electronics Engineering | Electrical Engineering
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**....
How to find total impedance in the RLC circuit ? | Impedance Combinations | Electrical Engineering
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