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Draw the schematic arrangement for a gas power plant. Answer : Schematic arrangement for a gas power plant Simple Systems:- ![][1] [1]: https://electrical-engineering.app/?qa=blob&qa_blobid=2410677951309365900...
important relationship between line quantities and phase quantities in a delta connection
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Draw the graph showing the variation of conductivity with temperature for a metallic conductor? Answer : The conductivity for a metallic conductor decreases with the increase in temperature. ![][1] [1]: https://electrical-engineering.app/?qa=blob&qa_blobid=10491891827766109637 ### Explanation: The Physics Behind the Graph To understand this ... | **Low** |...
Electric current : DC vs AC
State the material used for making (1) Magnetic Core (2) Fuse element Answer : ### (1) Magnetic Core The material used for a magnetic core is a **soft magnetic material**, with the specific choice depending on the application (e.g., frequency of the magnetic ... current rating and performance requirements. **Key Properties:** Low melting point and low electrical resistance....
Mesh Current Method (Loop Current Method) | Electrical Engineering
Draw the labeled hysteresis loop for an electromagnetic material. Answer : ![][1] hysteresis loop [1]: https://electrical-engineering.app/?qa=blob&qa_blobid=16263897287610247627...
Nodal Analysis Solved Example Problem | Electrical Engineering
State significance of earthing. Draw and explain pipe earthing. State the values of earth resistances for : (i) Substation (ii) Residential wiring (iii) H.T. Line (iv) L.T. Line Answer : ### 1. Significance of Earthing Earthing (or grounding) is a fundamental safety measure in any electrical installation. Its primary significance is to protect people, equipment, and property from ... to consumers. [1]: https://electrical-engineering.app/?qa=blob&qa_blobid=3390146307772186646...
Capacitive reactance example | 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**....
Write down the units of R, L, C and G. | 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**...
Impedance | Series RC Circuit Simple Example | Series Impedance | Electrical Engineering
Two wires A and B are of the same metal and of same length have their areas of cross section in the ratio 2:1 if the same potential difference is applied across each wire in turn, what will be the ratio of current flowing in A & B ? Answer : The ratio of the current flowing in wire A to wire B is **2:1**. --- ### Detailed Explanation Let's break down the problem using the relevant physics principles. #### 1. List the Given ... resistance, which is wire A. Our result confirms this: the current in A is twice the current in B....
Boost converter in Hindi | Electrical Engineering
What are the key steps involved in conducting an energy audit for a commercial building?
SSC JE EE Previous Paper Find the current in each branch of the given network if the total current
What are the properties of silicon that make it a suitable material for semiconductors?
Electrical Engineering Facts 86
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....
Hard Work vs Smart Work | 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)**....
Ohm's law | 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....
For the transistor circuit in Fig let β = 100 and VBE = 0.7 V. Determine vo and VCE.
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....
Express 5^3 = 125 in logarithm form. | Electrical Engineering
Draw circuit diagram for one lamp controlled with one switch. Answer : Answer : ![][1] [1]: https://electrical-engineering.app/?qa=blob&qa_blobid=5451139298613837756...
1.21 Faraday's law of electromagnetic induction | 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....
Computer Graphics MCQs | Electrical Engineering
Explain Squirrel Cage Induction Generator (SCIG) and also draw a diagram. Answer : ![][1] [1]: https://electrical-engineering.app/?qa=blob&qa_blobid=15646281222121025403 Explanation (Operation):- In this system gearbox is used to increase the speed of high speed ... , variable voltage output of the generator into the fixed frequency, fixed voltage output required for grid....
Fluid Mechanics MCQs | Electrical Engineering
Draw a block diagram of thermal power plant.
Common electrical accessories used in household wiring | Electrical Engineering
Show that the points (8, 1) (3,-4) and (2,-5) are collinear using determinant. Answer : ### **The Principle** Three points, (x₁, y₁), (x₂, y₂), and (x₃, y₃), are **collinear** (lie on the same straight line) if and only if the area of the triangle they form is zero. ... points do not form a triangle and must lie on the same straight line. Therefore, the points **are collinear**....
Logic Simplification Using Boolean Algebra 2 | Electrical and Electronics Engineering
Three resistors 1 Ohm , 2 Ohm and 3 Ohm are combined in series. What is the total resistance of the combination? Answer : When resistors are combined in series, the total resistance is the sum of the individual resistances. The formula is: R_total = R1 + R2 + R3 Given the values: * R1 = 1 Ω * R2 = 2 Ω * R3 = 3 Ω ... = 1 Ω + 2 Ω + 3 Ω = 6 Ω So, the total resistance of the combination is **6 Ohms**....
source transformation circuit analysis | 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...
Silicon-Controlled Rectifier (SCR) | Electrical Engineering
Draw the symbol of (i) PN junction diode (ii) Zener diode. Answer : ### (i) PN Junction Diode The symbol for a standard PN junction diode consists of a triangle pointing towards a bar. The triangle represents the **Anode (A)** and the ... .app/?qa=blob&qa_blobid=15767368111367211109 [2]: https://electrical-engineering.app/?qa=blob&qa_blobid=16492801014611698669...
unilateral circuit and bilateral circuit
List three passive design strategies for improving energy efficiency in a building.
Permanent Magnet DC PMDC Motor MCQs 2 | 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....
Electrical Estimation and Contractiing MCQs | 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....
Calculating Impedance, Current, Power Factor and Absorbed Power in an AC Coil: A Step-by-Step Guide
What is drift velocity? Derive expression for drift velocity of electrons in a good conductor in terms of relaxation time of electrons? Answer : --- ### Part 1: What is Drift Velocity? In a metallic conductor (like a copper wire), the outer electrons of the atoms are not bound to individual atoms. They are free to move throughout the entire volume of ... field. * The magnitude of the drift velocity is given by: $v_d = \frac{e\tau}{m}E$....
Why Voltage Follower is called unity gain Amplifier ? | Operational Amplifier | Simulator
Describe the properties of copper that make it an ideal material for electrical wiring.
For the amplifier in Fig, find the gain and Io. | Operational Amplifier | Electrical Engineering
What are the main advantages of HVDC transmission over HVAC for long distances?
Direct current | Electrical Engineering
Explain the principle of Pulse Width Modulation (PWM) for controlling motor speed.
DC motor gross torque example | Electrical Engineering
Why is insulation resistance testing important for the maintenance of electrical motors?
How can food be recycled? | Electrical Engineering
What are the primary design considerations for the core and windings of an electrical transformer?
Diode
What is the Monte Carlo simulation method used for?
Thevenin’s Theorem Problems | 6 Solved Example Problem on Thevenin’s Theorem Equivalent Circuit
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....
Electrical Engineering Facts 81
What is the difference between renewable and non-renewable resources, and why is the shift toward renewables important for sustainability? Answer : Renewable resources are naturally replenished on a human timescale, such as solar, wind, hydro, and biomass energy. Non-renewable resources like coal, oil, and natural gas are finite ... that future generations have access to reliable energy sources without depleting the planet's natural reserves....
For Series RC circuit find resistance and capacitance using v and i expressions
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....
What is Real Time Operating Systems RTOS | Electrical Engineering
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 |...
Alternating Voltage | Electrical Engineering
Obtain ohm’s law from the expression for electrical conductivity. Answer : We can derive the familiar form of Ohm's Law ($V=IR$) by starting with the fundamental expression for electrical conductivity ($\sigma$). This derivation beautifully connects the microscopic behavior of ... total **current ($I$)** flowing through it, successfully obtaining Ohm's Law, $V=IR$....
Alternating voltages and phasors (Problem 14) | Electrical Engineering
State one condition for maximum current to be drawn from the cell? Answer : For maximum current to be drawn from a cell, the **external resistance in the circuit should be zero**. This condition is also known as a **short circuit**. **Explanation:** The current (I) drawn from a cell ... possible value is 0. When R = 0, the current is at its maximum value, I_max = E / r....
Decimal to Octal conversion | Electrical and Electronics Engineering | Electrical Engineering
State the need for strictly following safety rules while working in electrical installations. Answer : Strictly following safety rules while working in electrical installations is not merely a recommendation; it is an absolute necessity. Electricity is an invisible, powerful, and unforgiving hazard. The rules ... protect the worker, their colleagues, the public, and the property they are working on....
Current division | Electrical Engineering
State the procedure for laying / installation of underground cable. Answer : 1) Direct laying Cable: or Trench laying method: ![][1] [1]: https://electrical-engineering.app/?qa=blob&qa_blobid=2239248645105787017 Procedure: For laying of a cable trench about 1.5m deep ... one cable does not damage the adjacent cable. Only armored cables are used in this method. ...
Mesh analysis 4 | 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)....
Write short notes on Arduino. | Electrical Engineering
Find IL for the circuit shown in fig. using Source transformation. ![][1] [1]: https://electrical-engineering.app/?qa=blob&qa_blobid=4421852427935123661 Answer : ![][1] [1]: https://electrical-engineering.app/?qa=blob&qa_blobid=7043185347050990986 ### **How to Find Current in a Circuit Using Source Transformation: A Step-by-Step Example** This article provides a detailed ... I2) from a total current (I_total) is `I2 = I_total * (R1 / (R1 + R2))`....
MCQ on Measurement and Instrumentation | Electrical Engineering
Describe an experiment to determine the acceleration due to gravity (g) using a simple pendulum.
MOSFET (Metal Oxide Semiconductor Field Effect Transistor) in hindi | Electrical Engineering
What is the difference between stress and strain in a mechanical component?
Digital Electronics | Decimal with Fraction to Octal Number Example
How does a wind turbine convert kinetic energy from the wind into electrical energy?
Source transformation 11 | Electrical Engineering
Explain the difference between a conductor, an insulator, and a semiconductor based on their energy band structure.
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 ...
Circuit Analysis : Nodal Analysis Solved Example Problem | Electrical Engineering
What is the difference between a radial and a ring main electrical distribution system?
n-MOSFET: Understanding the Basics of Transistor Switching | Electrical Engineering
Define the transfer function of a linear time-invariant (LTI) system.
State any eight advantages of electric heating. | Electrical Engineering
Compare the working principles of a hydroelectric power plant and a nuclear power plant.
Nodal Analysis of Electric Circuits Example 6 | Electrical Engineering
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