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Draw the labeled hysteresis loop for an electromagnetic material.
hysteresis loop
Describe the properties of copper that make it an ideal material for electrical wiring.
Alternating Current MCQ MCQ | Electrical Engineering
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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...
Nodal Analysis of Electric Circuits Example 4 | 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....
Electric Power | Electrical Engineering
Compare the electrical, mechanical and thermal properties of : i) asbestos (ii) mica (iii) porcelain as an insulating material Answer : ### Classification of Wiring Electrical wiring can be classified based on several criteria, but for installation purposes, it is most commonly classified by the **method of installation and ... is essential for managing the complex electrical needs of kitchens, laundries, and HVAC systems....
Superposition Theorem Solved Example | Electric Circuits | Network Analysis | Network Theory
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....
Alternating Voltage and Phasors | Impedance of parallel RLC circuit Example | 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...
Electrical Engineering | Electrical Machine | Transformer | MCQ 6 | Electrical Engineering
What is the difference between an open-loop and a closed-loop control system?
How to Be Wise ? | Electrical Engineering
State failure phenomena observed in insulating material. State four reasons for failure of gaseous and solid dielectric materials. Answer : ### Failure Phenomena in Insulating Materials Insulating materials (dielectrics) are designed to prevent the flow of electric current. Failure occurs when the material loses its insulating properties ... insulation, concentrating the electric field and providing an easy path for breakdown to occur....
AC Waveform | Electrical Engineering
Draw the truth table for a 2-input NAND gate.
Basic Mechanical Engineering MCQs | Electrical Engineering
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...
KVL Circuit Analysis | Electrical Engineering
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 | 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...
Wye-Delta Transformations : For circuit in Fig obtain the equivalent resistance at terminals a b
What are the properties of silicon that make it a suitable material for semiconductors?
Superposition Theorem in Details with Solved Example | Easy Step by Step | Electrical Engineering
What are the primary design considerations for the core and windings of an electrical transformer?
Light Emitting Diode (LED)
What are the key steps involved in conducting an energy audit for a commercial building?
Electrical Engineering Facts 86
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 |...
Problem on force 6 | Electrical and Electronics Engineering | Electrical Engineering
Explain the electrical and thermal properties of transformer oil those make it suitable as an electrical insulating medium. Answer : ### Introduction: The Dual Role of Transformer Oil Transformer oil, also known as insulating oil, is a highly refined oil that is stable at high temperatures and has excellent ... characteristics are maintained by robust thermal properties over the entire operating life of the transformer....
DFCCIL Executive (Electrical) Official Paper For the network shown in figure, the value of supply
Explain the suitability of copper as an electrical conductor with reference to its mechanical and electrical properties. Answer : ### Introduction Copper is the industry standard for electrical wiring and conductors, and its widespread use is due to an exceptional combination of both electrical and mechanical properties. While ... for decades, making it the superior choice for the vast majority of electrical applications....
Nodal Analysis : Calculate the node voltages in the circuit shown in Fig | 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....
15 kV AC railway electrification | 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. ...
Practice Problem 3.2 Find the voltages at the three nonreference nodes in the circuit.
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)....
Introduction to Bipolar Junction Transistor (BJT) | BJT | Electrical Engineering
Explain the suitability of aluminum as an electrical conductor with respect to its mechanical and electrical properties. Answer : Aluminum is an excellent and widely used electrical conductor, second only to copper in global usage. Its suitability is a trade-off: it is not as conductive as copper, but its significantly lower ... at a premium and high conductivity in a small package is essential, copper is the superior choice....
Controllability and Observability Problem 1 | Electrical and Electronics Engineering
Define dielectric failure of electrical insulating material. Answer : ### Definition: Dielectric Failure **Dielectric failure**, also known as **dielectric breakdown** or **insulation failure**, is the event where an electrical insulating material, subjected to a sufficiently ... equipment. * **Safety Hazards:** Poses a significant risk of fire and electric shock....
what does 20A mean in a fuse ? | Electrical Engineering
Write properties of good electrical insulation material. Answer : ### Introduction An electrical insulator is a material used to prevent the flow of electric current. Its primary job is to confine the current to a desired path (like a conductor wire) and to prevent ... *Chemical & UV Resistance**| High | To ensure long life and reliability in harsh environments. |...
GeneralPurpose Processor | Electrical and Electronics Engineering | Electrical Engineering
State applications of : (i) PVC paper (ii) Porcelain with type of class based on withstand temperature is insulating material. Answer : ### (i) Applications of PVC Paper "PVC paper" typically refers to synthetic paper made from Polyvinyl Chloride resin or paper that is heavily coated with PVC. It is not traditional ... inside electrical enclosures and switchgear to support and insulate current-carrying busbars from the metal frame....
Design of IIR filter using approximation of derivatives 1 | Electrical and Electronics Engineering
State gaseous and liquid insulating material. Answer : Insulating materials, also known as dielectrics, are substances that resist the flow of electric current. They are essential in electrical equipment for preventing short circuits, ensuring safety, and ... voltage pulse systems and as a coolant in some high-power electronic devices and transmitters....
Mesh Analysis | Electric Circuits | Problem 3.40 | Electrical Engineering
Explain with justification two uses of each of two following as an electrical conductor: (i) Brass (ii) Silver Answer : ### (i) Brass Brass is an alloy primarily made of copper and zinc. While it is a good electrical conductor, it is not as conductive as pure copper. Its usefulness comes from a ... silver (lowest possible signal loss) while keeping the cost much lower than using a solid silver conductor....
MCQ on Components of Transmission lines | Electrical Engineering
Explain HRGO and CRGO. State benefits of CRGO for manufacturing of core. Answer : ### **Explanation of HRGO and CRGO** Both HRGO and CRGO are types of "electrical steel" or "silicon steel." Their primary purpose is to be used in the cores of electromagnetic ... smaller, lighter, quieter, and more energy-efficient devices with a longer and more reliable operational lifespan....
Relationship Between Line Quantities and Phase Quantities in Delta Connection | Three Phase Circuits
Select insulating materials for following parts : (i) Insulation between heating element and base plate of electric iron. (ii) Insulation used over copper or aluminium conductor used for making coils. (iii) Transformer bushings. (iv) Insulation between transmission line and pole. Answer : ### (i) Insulation between heating element and base plate of electric iron. **Selected Material:** **Mica** **Reasoning:** The insulation in an electric iron has a unique set of ... is very lightweight, has a high strength-to-weight ratio, and performs exceptionally well in polluted environments....
RLC series circuit | 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...
Parallel A.C. Circuits | 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....
Hindi : Voltage Division Rule Example | Electric Circuits | Network Analysis | Network Theory
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 |...
how to wire a 3-phase induction motor in two different configurations: Star and Delta
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....
When water boils and turns to steam what happens to the hydrogen bonds? | Electrical Engineering
Describe an experiment to determine the acceleration due to gravity (g) using a simple pendulum.
Kirchhoff’s Laws : In the circuit shown in Fig determine vx and the power absorbed by the 12 Ω resi
Explain the difference between a conductor, an insulator, and a semiconductor based on their energy band structure.
An alternating current is represented by the following expression : i = 10 sin (100 π t).Calculate :
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 ...
Measurementerror | Electrical and Electronics Engineering | Electrical Engineering
What are the main advantages of HVDC transmission over HVAC for long distances?
How to find total impedance Z, current I and Impedance angle ? | Electrical Engineering
Explain the principle of Pulse Width Modulation (PWM) for controlling motor speed.
MCQ on Sensors | Electrical Engineering
What is the purpose of grounding (earthing) in an electrical installation?
Mesh Analysis Example | Electrical Engineering
Why is insulation resistance testing important for the maintenance of electrical motors?
Electrical Engineering Facts 6
Compare and contrast the operational characteristics of a MOSFET and an IGBT.
Problem on resistance and resistivity 10 | Electrical Engineering
What are the key differences between a manager and a leader in an organization?
Maximum power transfer theorem example | 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....
Synchronous Machines MCQ MCQ | Electrical Engineering | Electrical Engineering
What is the difference between fixed costs and variable costs in an engineering project?
InductionMotor | Electrical and Electronics Engineering | Electrical Engineering
Explain the concept of 'slip' in an induction motor.
Mesh Analysis with Supermesh | Electrical Engineering
Describe the function of an inverter in a power electronics system.
What is Arduino ? | Electrical Engineering
What is the Monte Carlo simulation method used for?
Electrical Engineering Facts 67
What is the purpose of a substation in an electrical power grid?
How to find series parallel equivalent resistance ? | Electrical Engineering
What is the difference between an analog signal and a digital signal?
Determine the gain vo/vs of the transistor amplifier circuit in fig. | Electrical Engineering
What is the basic principle behind how a RADAR system detects an object's range and velocity?
1.5 E.M.F. and Potential Difference | Electrical Engineering
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