Basics of Electrical Engineering Quiz

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Questions and Answers

What is the final grade needed to achieve a grade of 2?

60% (correct)

50%

70%

80%

Which teaching method primarily helps students learn the basics of Electrical Engineering?

Field trips

Online video lectures

Group projects

Self-study and quizzes (correct)

What happens if a student answers an assignment on Moodle?

They can edit their answers after submission.

They can receive feedback immediately.

They can answer it only once. (correct)

They can submit it multiple times.

Which of the following subjects is NOT mentioned in the course schedule?

Renewable energy sources Signup and view all the answers

What is the purpose of the quizzes associated with each lecture?

To assess understanding of the lecture material. Signup and view all the answers

What percentage is required for a student to receive the highest grade of 5?

90% Signup and view all the answers

Which of the following fields is NOT directly mentioned as being relevant for an engineer to know about electricity?

Mechanical Engineering Signup and view all the answers

Where can students find all course-related material and assignments?

On Moodle. Signup and view all the answers

What are the essential methods of electric power generation?

Nuclear, hydroelectric, fossil fuels, and solar Signup and view all the answers

Which of the following is a primary end-use of electricity?

Heating and cooling Signup and view all the answers

What principle explains how electricity prices are formed?

Supply and demand dynamics within the market place Signup and view all the answers

Which of the following technologies can facilitate electrical engineering?

Internet of Things (IoT) Signup and view all the answers

What was one of the earliest known electric phenomena described in history?

Crushed amber generating static electricity Signup and view all the answers

How do electrical devices such as motors and batteries relate to electricity?

They are creative inventions that harness electric power Signup and view all the answers

In which era did the Chinese reportedly start using magnets for navigation?

20th century BC Signup and view all the answers

What phenomenon occurs when there is a flow of electrons between the ground and clouds?

Static electricity Signup and view all the answers

Which hydropower plant has the highest annual energy output?

Imatra Signup and view all the answers

What is the height of the River/watershed for the Pyhäkoski plant?

32.3 m Signup and view all the answers

In what year was the Valajaskoski hydropower plant constructed?

1960 Signup and view all the answers

Which hydropower plant has the lowest rated power output?

Ossauskoski Signup and view all the answers

What is the combined power output of all hydropower plants in Finland?

3100 MW Signup and view all the answers

What is the name of the first electrical storage device invented during the 17th and 18th centuries?

Leyden jar Signup and view all the answers

Who conducted experiments that demonstrated the connection between electricity and magnetism?

Hans Christian Ørsted Signup and view all the answers

What material did Alessandro Volta use to construct the first battery?

Silver, zinc, and saltwater Signup and view all the answers

Which scientist is associated with the frog thigh experiments and the concept of animal electricity?

Luigi Galvani Signup and view all the answers

What significant event in electrical engineering occurred in the late 18th century?

Demonstrating the relationship between electricity and magnetism Signup and view all the answers

What was the primary function of the Leyden jar when it was first used?

To store static electricity Signup and view all the answers

Which conclusion did Alessandro Volta draw from his reinterpretation of Galvani's experiments?

Animal electricity had no basis in the phenomenon he observed. Signup and view all the answers

What did Ørsted discover about electric currents during his experiments?

Electric currents can affect nearby magnets. Signup and view all the answers

What phenomenon did André Marie Ampère discover about the interaction of conductors carrying direct current?

They attract each other if currents flow in the same direction. Signup and view all the answers

Which statement correctly describes Coulomb's law?

It quantifies electrostatic force with the formula $F = \frac{Q_1 Q_2 k}{r^2}$. Signup and view all the answers

What device did Benjamin Franklin invent to protect structures from lightning?

Lightning rod Signup and view all the answers

Joseph Henry made several contributions to electromagnetism. Which of the following invention is associated with him?

Electric doorbell Signup and view all the answers

What rule involves the right hand in determining the direction of the magnetic field in relation to electric current?

Right-hand grip rule Signup and view all the answers

The unit of electrical charge was named after which scientist?

Charles Coulomb Signup and view all the answers

Which scientist first described the magnetic repulsion and attraction in the context of electrostatic force?

Charles Coulomb Signup and view all the answers

Which common misconception about electric current and electron flow is indicated in the content?

Electrons flow opposite to the direction of current flow. Signup and view all the answers

Study Notes

Course Overview: Basics of Electrical Engineering (BL10A0102)

First-year course, Period 1, 2 credits.
Instructors: Pia Lindh ([email protected], +358 400 152 420) and Mehar Ullah ([email protected], +358 451705414).
All course materials and assignments are on Moodle.
Teaching methods include active lectures and self-study, with Moodle quizzes and assignments. Assignments have one attempt each. Feedback is provided via Moodle chat.
Lectures are available as PDFs on Moodle. Changes to course materials may be made on Moodle.

Grading

Final grade is calculated from quizzes and a final exam.
Grading scale: 0-5.
Percentage to grade mapping: 0-49% = 0, 50% = 1, 60% = 2, 70% = 3, 80% = 4, 90% or above = 5.

Course Schedule

Milestones of electricity (Lindh, Ullah)
Electricity supply (Lindh)
Consumption (Lindh)
Electric drives, power electronics (Lindh)
Electricity market, power systems, smart grid (Lindh, Ullah)
Energy storages (Ullah)
IoT and Power-to-X technologies (Ullah)

Examination

Final exam is taken in exam rooms. Instructions for electronic exams are available at https://elut.lut.fi/en/completing-studies/examinations/exam-electronic-examination

Course Objectives

Identify key moments in electrical engineering history.
List main electrical power generation methods.
Determine major electricity end-uses.
Explain electricity price formation.
Identify and describe the operational principles of electrical engineering applications.
Solve problems in simple DC and AC systems.
Understand transformer and generator operation.
Understand how technologies like IoT and PtX facilitate electrical engineering.

What is Electricity?

Electricity is ubiquitous; it powers our daily lives.
Household electricity is typically a 240-volt sinusoidal waveform.
Electric shock is a hazard; avoid direct contact. (Optional viewing suggestion: https://www.youtube.com/watch?v=oB1v-wh7EGU)

The Electricity System

Consists of supply, transmission & distribution, consumption, control, power electronics, and the marketplace. (additional information at https://happeningthemovie.com/)

A Brief History of Electricity

Early understanding involved observations of natural phenomena like magnetic stones (compasses), electric fish, and lightning.
Static electricity was studied in the 17th and 18th centuries. The Leyden jar allowed for the storage of static electricity.
Ewald Georg von Kleist invented the capacitor.

Galvani and Volta

Luigi Galvani's experiments with frog legs led him to believe animals produced electricity.
Alessandro Volta disagreed, creating the first battery (using silver, zinc, and saltwater-soaked paper strips).

The Relationship Between Electricity and Magnetism (1820)

Hans Christian Ørsted demonstrated a link between electricity and magnetism. His experiment showed that a compass needle is deflected near a current-carrying conductor.
André-Marie Ampère showed that parallel current-carrying conductors attract or repel depending on current direction. He formulated mathematical descriptions combining electricity and magnetism.

Charles Coulomb (1736-1806)

Described the electrostatic force between charged particles (Coulomb's law): F = kQ1Q2/r^2.
Developed a torsion balance to measure weak electrical and magnetic forces.
Defined the law of magnetic repulsion and attraction. The coulomb (unit of electrical charge) is named after him.

Benjamin Franklin

Demonstrated that lightning is electricity.
Invented the lightning rod.

Joseph Henry (1797-1878)

Major American electricity researcher.
Made many electromagnetism inventions including self-inductance, an electric doorbell, and an electric motor.

Finnish Hydropower

Finland has over 220 hydropower plants with a combined power output of approximately 3100 MW. A table with specific plant details is included.

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Description

Test your understanding of the fundamental concepts covered in the Basics of Electrical Engineering course. This quiz will assess your knowledge on topics such as electricity supply, power systems, and electric drives. Prepare to evaluate your grasp of both theoretical and practical elements of electrical engineering.