For the best experience, please use Google Chrome.
Setting up your app...
Tap below to open the full experience.
Explain the working principle of a single-phase transformer.
Superposition 2 | Electrical Engineering
Loading products...
Describe the principle of electric arc welding.
Superposition Theorem Solved Example Problem | Electrical Engineering
Compare the working principles of a hydroelectric power plant and a nuclear power plant.
Resistor | How Resistors Work: A Beginner's Guide | Electrical Engineering
Explain the principle of operation of a DC motor.
Problem on electrical power and energy 6 | Electrical Engineering
What is Orthographic Projection, and what is the fundamental principle that governs the alignment of the standard views (Front, Top, and Right Side) on a 2D engineering drawing? Answer : **Orthographic Projection** is the primary method used in engineering to represent a three-dimensional object on a two-dimensional surface. The core idea is to look at the object from ... the exact 3D object it represents, making it the unambiguous foundation for manufacturing and construction....
Equivalent Resistance of Complex Circuits - Resistors In Series and Parallel Combinations
Describe the function of an inverter in a power electronics system.
single-phase transformer | electrical transformer
Describe the main components and energy conversion stages of a thermal power plant.
Thevenin's and Norton's Theorems 1 | Electrical Engineering
How does a digital multimeter measure voltage, and what is its basic working principle?
Impedance and Current Calculation in a Series RLC Circuit | Alternating Current
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 ...
Current transformer | Electrical Engineering
What is the basic principle behind how a RADAR system detects an object's range and velocity?
Phasor representation of an alternating quantity | Electrical Engineering
Explain the principle of Pulse Width Modulation (PWM) for controlling motor speed.
Hindi : Radians to Degrees Conversion Example | Electrical Engineering
Describe an experiment to determine the acceleration due to gravity (g) using a simple pendulum.
Thevenin Equivalent Circuit Solved Example | Electric Circuits | Network Analysis | Network Theory
Describe the properties of copper that make it an ideal material for electrical wiring.
Mesh Analysis with Supermesh Problem Solved Example | Electrical Engineering
Describe the role of an Analog-to-Digital Converter (ADC) in an embedded system that measures temperature.
How to use a multimeter | Electrical Engineering
Describe the practical application of Pascal's law in hydraulic systems.
Brain Teaser Puzzle : Move one matchstick to make this equation true | Electrical Engineering
Describe with sketches the process of laying of underground cables by the drawing in method. Answer : ### **The "Drawing In" Method for Laying Underground Cables** This method involves first installing a system of pipes or conduits (called ducts) underground. The cables are then pulled, or " ... duct system. However, this is often offset by the long-term flexibility and protection it provides....
Analog circuits [audio] | Electrical Engineering
Describe with reasons the failure of porcelain insulators. Answer : ### **Introduction: The Role of Porcelain Insulators** Porcelain insulators are a critical component in electrical power systems. Their primary functions are twofold: 1. **Electrical Insulation: ... , and maintenance strategies (like insulator washing) to ensure the reliability of the power grid....
Kirchhoff’s Current Law (KCL) Explained with Example | Electrical Engineering
What does a wattmeter measure? Answer : ### In Simple Terms A wattmeter measures **electrical power**. Think of it like this: * **Voltage** (measured by a voltmeter) is like the *pressure* of water in a pipe. * **Current** (measured ... potential or "pressure." | | **Ammeter** | Amps (A) | Measures electrical current or "flow." |...
Capacitors | Electrical Engineering
What is the function of a capacitor in an electronic circuit? Answer : To store electric energy when the circuit is closed and release the energy when circuit is opened ...
Impedance parameters two port network | z parameters of two port network | Electrical Engineering
Define the transfer function of a linear time-invariant (LTI) system.
Mesh Analysis with Supermesh | Electrical Engineering
What is the role of a FACTS device like a STATCOM in a power transmission system?
For Series RC circuit find resistance and capacitance using v and i expressions
What are the main components of a battery electric vehicle (BEV) powertrain?
Ideal Op-Amp Solved Example | Operational Amplifier | Find Vo and Io in op-amp
Compare and contrast the operational characteristics of a MOSFET and an IGBT.
Kirchhoff's Current Law (KCL) | Electrical Engineering
Explain the basic components and architecture of a SCADA system.
Source transformation 1 | 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....
AC Waveform | Electrical Engineering
What is the function of the Arithmetic Logic Unit (ALU) in a microprocessor?
Non-Linear Circuit | Electrical Engineering
What is the purpose of a substation in an electrical power grid?
Standard symbols for electrical components | Electrical Engineering
Explain the concept of inheritance in C++ with a simple example.
State transition matrix from state model 1 | Electrical and Electronics Engineering
What are the properties of silicon that make it a suitable material for semiconductors?
Voltage Divider Rule | Electrical Engineering
How can the Internet of Things (IoT) be used to create a smart home automation system?
EEE Android App (App Link in Comment) | Electrical Engineering
Explain the operation of a buck-boost converter and its primary application.
Electrical Engineering Facts 24
What factors should be considered when estimating the cost of wiring a new residential building?
What is fuse ? | Electrical Engineering
What is the function of a rectifier in a power supply?
Electrical Engineering
Calculate the equivalent resistance of a circuit with three resistors (5Ω, 10Ω, 15Ω) connected in parallel.
Impedance Parameters of Two Port Network Solved Example | Z Parameter Example | Electric Circuits
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....
1.1 EMF, Current, Potential Difference, Power and Energy. | 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....
Finding The Current In a Parallel Circuit With 3 Resistors | 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)**....
Electrical Engineering | Electrical Machine | DC motor | MCQ 6 | Electrical Engineering
Why are microwave frequencies overwhelmingly preferred for radar systems, and what fundamental trade-off does the choice of a specific microwave frequency (e.g., S-band vs. X-band) represent for a radar's performance? Answer : The use of microwaves is not arbitrary; they occupy a "sweet spot" in the electromagnetic spectrum that provides the best balance of physical properties for detecting and ranging objects. ... provides the required resolution for the mission, thereby maximizing its all-weather performance and range....
MCQ on DC Shunt motor | Electrical Engineering
Why is accurately estimating Indirect Costs (Overhead) and Profit just as critical as correctly calculating the direct costs of labor and material when submitting a competitive and sustainable electrical bid? Answer : This question gets to the heart of what separates a working electrician from a successful electrical contractor. While getting the direct costs right determines the *cost* of a job, getting ... reward the risk involved. All three are indispensable pillars of a successful electrical contracting bid....
Sinusoids Solved Example Determine Which one leads and by how much. | Electrical Engineering
What is the difference between a fundamental quantity and a derived quantity? Provide two examples of each. Answer : ### The Core Difference In simple terms, **fundamental quantities** are the basic building blocks of measurement. They are independent of each other and cannot be expressed in terms of other physical quantities. Think of them as the ... ** ($m^2$), **Speed** (m/s), **Force** (Newton or kg·m/s²) |...
Using Zener Diodes in Forward and Reverse Bias: Applications and Characteristics
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....
Single Phase Series AC Circuit 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. |...
Superposition Theorem Solved Example | Electric Circuits | Network Analysis | Network Theory
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**....
find equivalent resistance between P and Q | Electrical Engineering
A storage battery of emf 8.0 V and internal resistance 0.5 Ohm is being charged by a 120 V DC supply using a series resistor of 15.5 Ohm . What is the terminal voltage of the battery during charging? What is the purpose of having a series resistor in the charging circuit? Answer : ### Given Data: * Electromotive force (emf) of the battery, $E = 8.0 \text{ V}$ * Internal resistance of the battery, $r = 0.5 \text{ } \Omega$ * DC supply voltage, $V_{supply} = ... to a much safer and more manageable **7.0 A**, protecting both the battery and the power supply from damage....
Wisdom teeth normally grow during the which age? | Electrical Engineering
A silver wire has a resistance of 2.1 Ohm at 27.5 degree C , and a resistance of 2.7 Ohm at 100 degree C . Determine the temperature coefficient of resistivity of silver. Answer : ### 1. Understand the Principle The relationship between resistance and temperature for most metals (like silver) over a moderate temperature range is approximately linear and can be described by the formula: $R_2 = ... 00394 °C⁻¹** Alternatively, in scientific notation: **α = 3.94 x 10⁻³ °C⁻¹**...
Ideal Op Amp | Electrical Engineering
A battery of emf 10 V and internal resistance 3 Ohm is connected to a resistor. If the current in the circuit is 0.5 A, what is the resistance of the resistor? What is the terminal voltage of the battery when the circuit is closed? Answer : ### Given Information: * **EMF of the battery (E):** 10 V * **Internal resistance (r):** 3 Ω * **Current in the circuit (I):** 0.5 A --- ### 1. What is the resistance of the ... text{V}$ Both methods give the same result. **Answer:** The terminal voltage of the battery is **8.5 V**....
Nodal Analysis with Supernode | Sinusoidal Steady State Analysis | 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....
A battery of emf E and internal resistance r sends a current, I1 , I2 when connected to an external resistance of R1 , R2 respectively. Find the emf. and internal resistance of the battery. Answer : Let's derive the expressions for the electromotive force (EMF) and the internal resistance of the battery step-by-step. ### Understanding the Setup The core principle we'll use is Ohm's law applied to the entire circuit. For a ... $$ **EMF (E):** $$ E = \frac{I_1 I_2 (R_1 - R_2)}{I_2 - I_1} $$...
Hindi : Norton's Theorem Example | Electric Circuits | Network Analysis | Network Theory
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....
AC Circuit Nodal Analysis with Dependent Source Sinusoidal Steady State Analysis | Network Analysis
Why do we prefer a potentiometer to measure the emf of a cell rather than a voltmeter? Answer : The primary reason we prefer a potentiometer to measure the EMF of a cell is that **a potentiometer draws no current from the cell at the point of measurement.** A voltmeter, by its ... method ensures no current is drawn, thereby eliminating any error caused by the source's internal resistance....
MCQ on Power System Analysis | Electrical Engineering
279 questions
206 answers
35.1k users