Electric Circuit and Electrical Power System Overview

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Questions and Answers

What is the main focus of electrical engineering?

  • Studying and applying electricity, electronics, and electromagnetism (correct)
  • Developing new materials for construction
  • Exploring marine biology
  • Designing computer software

Which subdivision of electrical engineering deals with energy production and distribution?

  • Optoelectronics
  • Power (correct)
  • Telecommunications
  • Digital electronics

What does the field of Control Systems in electrical engineering primarily deal with?

  • Building bridges and infrastructure
  • Generating solar energy
  • Developing computer algorithms
  • Using electrical energy to control physical processes (correct)

Which area of electrical engineering focuses on the study and application of devices amplifying electrical signals?

<p>Optoelectronics (B)</p> Signup and view all the answers

What is the main focus of telecommunications in electrical engineering?

<p>Transporting information in electrical form (B)</p> Signup and view all the answers

Which subdivision of electrical engineering is concerned with information-bearing electrical signals?

<p>Signal processing (C)</p> Signup and view all the answers

What is the purpose of a transmission system in an electrical power system?

<p>To transport electricity from the power plant to various destinations (D)</p> Signup and view all the answers

Which of the following is NOT mentioned as a component of an electrical power system?

<p>Bulb (D)</p> Signup and view all the answers

What is the main function of a circuit breaker in an electrical power system?

<p>To interrupt the flow of electricity in case of a fault (A)</p> Signup and view all the answers

Which type of electricity refers to the built-up electric charge on the surface of objects?

<p>Static electricity (B)</p> Signup and view all the answers

How does electricity travel from a power plant to different destinations?

<p>Through thick and insulated transmission lines (B)</p> Signup and view all the answers

In an electrical power system, what role do transformers play?

<p>Changing the voltage of electricity (D)</p> Signup and view all the answers

What are examples of non-conductors or electrical insulators?

<p>Plastic, rubber, glass (D)</p> Signup and view all the answers

How do semiconductor materials differ from conductors and insulators?

<p>They have intermediate electrical conductivity (C)</p> Signup and view all the answers

What is the main purpose of non-conductors or electrical insulators?

<p>To prevent the movement of electrons within the material (B)</p> Signup and view all the answers

Which of the following is a source of energy that works by splitting uranium atoms?

<p>Nuclear power plants (D)</p> Signup and view all the answers

Why are gases not good conductors of electricity?

<p>Due to the distances between atoms (B)</p> Signup and view all the answers

How do coal, gas, and uranium contribute to electricity generation?

<p>By creating steam to drive turbine generators (B)</p> Signup and view all the answers

What is the source of power for hydro-powered plants?

<p>Water (D)</p> Signup and view all the answers

How do wind turbines generate electricity?

<p>By utilizing the kinetic energy of the wind (D)</p> Signup and view all the answers

Where does geothermal power come from?

<p>Heat energy buried beneath the earth's surface (B)</p> Signup and view all the answers

What is the main principle behind solar power generation?

<p>Utilizing the energy from sunlight (D)</p> Signup and view all the answers

How does a hydro-powered plant reuse water after it hits the turbine?

<p>It sends the water back to the river for re-use (D)</p> Signup and view all the answers

Which method uses magma to generate power?

<p>Geothermal power plants (D)</p> Signup and view all the answers

Who is regarded as one of the main discoverers of electromagnetism?

<p>Alexander Graham Bell (A)</p> Signup and view all the answers

Which inventor is known for inventing the telephone?

<p>Alexander Graham Bell (C)</p> Signup and view all the answers

Who shared a Nobel Prize with Guglielmo Marconi for contributions to the development of radiotelegraphy?

<p>Ferdinand Braum (B)</p> Signup and view all the answers

Which scientist's work was replicated several decades later by Ohm?

<p>Henry Cavendish (A)</p> Signup and view all the answers

Who devised a way to make the first hard-drawn copper wire strong enough for use by the telegraph industry?

<p>Thomas Doolittle (C)</p> Signup and view all the answers

Which inventor is known for inventing the electric light bulb?

<p>Thomas A. Edison (D)</p> Signup and view all the answers

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