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List Of Electrical Interview Questions and Answers 👇
1. What is the purpose of Thin wire on transmission tower? https://www.electricalpaathshala.com/ground-wire/

2. Why Transformer is rated in kVA instead of kW?
Answer 👇 https://www.electricalpaathshala.com/2021/02/transformer-rating/

3. Why there are colourful balls on transmission lines?
Answer 👇
https://www.electricalpaathshala.com/2020/10/aerial-marker-balls/

4. Why power is generated and transmitted in 3 phase only and not in 6 phase, 12 phase ect.?
Answer 👇
https://www.electricalpaathshala.com/2022/04/why-three-phase-power-only/

5. What is the function of Transformer oil?
Answer 👇 https://www.electricalpaathshala.com/2023/10/transformer-oil/

6. Why earth pin is longer and thicker?
Answer 👇
https://www.electricalpaathshala.com/2023/08/why-earth-pin-is-longer-and-thicker/

7. Why AC is rated in Ton and not in kW or kVA?
Answer 👇
https://www.electricalpaathshala.com/2023/11/why-ac-is-rated-in-ton/

8. What is Buchholz relay and its working?
Answer 👇
https://www.electricalpaathshala.com/2019/12/buchholz-relay/

9. What is skin effect in power transmission lines?
Answer 👇
https://www.electricalpaathshala.com/what-is-skin-effect/

10. What is Thevenin's Theorem? Explain with the help of example?
Answer 👇
https://www.electricalpaathshala.com/what-is-thevenins-theorem/

More question & answers will come soon...

Here is the full explanation 👇👇
https://www.electricalpaathshala.com/ac-electric-power-system/

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Here is the explanation 👇
https://www.electricalpaathshala.com/ground-wire/

Here's the Explanation 👇👇
https://www.electricalpaathshala.com/what-is-skin-effect/

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Nikola Tesla was a brilliant inventor and electrical engineer known for his contributions to the development of alternating current (AC) electrical systems. Despite his many innovations, such as the induction motor and the Tesla coil, he struggled in his later years, both financially and in gaining recognition for his work.

Tesla had grand visions for the future, including wireless communication and free energy for everyone. However, many of his ideas were ahead of their time and not fully appreciated during his lifetime. This led to periods of financial hardship and isolation for Tesla, which could be considered sad aspects of his life story.

Despite these challenges, Tesla remained dedicated to his work and continued to pursue his innovative ideas until his death. Today, he is recognized as one of the greatest inventors of all time, and his legacy continues to inspire scientists, engineers, and inventors around the world.

One unique fact about Nikola Tesla is that he had a photographic memory. This meant he could recall entire books, images, and mathematical formulas with extraordinary accuracy. Tesla claimed that this ability allowed him to envision complex inventions and conduct mental experiments before ever putting pen to paper. His photographic memory contributed to his remarkable creativity and problem-solving skills, enabling him to develop revolutionary ideas and inventions throughout his career.

SSC JE 2024 Recruitment Details Notification Released.

🟩 Post Name : Junior Engineer

🟩 Total Post: 968

🟩 Education Qualification - Degree /Diploma In Civil Engineering, Mechanical Engineering, Electrical Engineering

🟩 SSC Official Website - https://ssc.gov.in/

🟩 IMPORTANT DATE

☑️ Application Starting Date:- 28.03.2024

☑️ Application Last Date:-
18.04.2024

☑️ Tentative schedule of Computer-Based Examination (Paper-I) 04-06-2024 to 06-06-2024

https://www.electricalpaathshala.com/what-is-thevenins-theorem/

Basic Questions which are asked frequently in Interviews
👇👇

1. What is the difference between AC and DC?
- Answer: "AC, or alternating current, periodically changes direction, while DC, or direct current, flows in one direction continuously. AC is commonly used for power transmission over long distances due to its ability to change voltage levels using transformers, while DC is often used in electronics and battery-powered devices."

2. Explain Ohm's Law and how it applies to electrical circuits.
- Answer: "Ohm's Law states that the current flowing through a conductor between two points is directly proportional to the voltage across the two points and inversely proportional to the resistance between them. Mathematically, it is expressed as I = V/R, where I is the current in amperes, V is the voltage in volts, and R is the resistance in ohms. Ohm's Law is fundamental in analyzing and designing electrical circuits."

3. What is a transformer and how does it work?
- Answer: "A transformer is an electrical device that transfers electrical energy between two or more circuits through electromagnetic induction. It consists of two coils, called the primary and secondary windings, wrapped around a common core. When an alternating current passes through the primary winding, it creates a changing magnetic field that induces a voltage in the secondary winding. This voltage can be stepped up or stepped down based on the ratio of turns in the primary and secondary windings."

4. What is the purpose of a circuit breaker and how does it operate?
- Answer: "A circuit breaker is a protective device used to interrupt the flow of electrical current in a circuit in case of overcurrent or short circuit conditions. It serves to protect electrical equipment and prevent damage or fire hazards. Circuit breakers operate by automatically detecting abnormal current levels and tripping to open the circuit, thereby interrupting the flow of electricity. Once the fault is cleared, the circuit breaker can be manually or automatically reset to restore power."

5. Explain the concept of three-phase power and its advantages.
- Answer: "Three-phase power is a type of electrical power transmission that utilizes three alternating currents with a phase difference of 120 degrees. It is commonly used in industrial and commercial applications due to several advantages, including higher power transfer efficiency, smoother operation of motors and machinery, and balanced power distribution. Three-phase power systems also require fewer conductors compared to single-phase systems, resulting in cost savings and improved reliability."

6. What is power factor, and why is it important in electrical systems?
- Answer: "Power factor is a measure of the efficiency with which electrical power is used in a system. It represents the ratio of real power (measured in watts) to apparent power (measured in volt-amperes). A power factor of 1 indicates perfect efficiency, while a lower power factor indicates inefficiencies such as reactive power loss. Maintaining a high power factor is important in electrical systems to maximize energy efficiency, reduce energy costs, and minimize voltage drop and power losses."

7. Describe the operation of a synchronous generator and its applications.
- Answer: "A synchronous generator is a type of electrical generator that produces alternating current by converting mechanical energy into electrical energy through electromagnetic induction. It consists of a rotor and a stator, with the rotor rotating at a constant speed synchronized with the frequency of the grid. Synchronous generators are commonly used in power plants to produce electricity and in synchronous motors for industrial applications requiring precise speed control."

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Dominant pole concept for Higher order systems PDF #controlsystem 👆👆👆