Power Generation

Power Generation

Assessment

Flashcard

•

Science

•

9th - 12th Grade

•

Hard

Created by

Barbara White

FREE Resource

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24 questions

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1.

FLASHCARD QUESTION

Front

Electric generator Noun

[uh-lek-trik jen-uh-rey-ter]

Back

Electric generator


A device that converts mechanical energy into electrical energy, typically by rotating a wire coil within a magnetic field.

Example: This diagram shows how rotating a wire coil within a magnetic field generates an electric current, which powers the light bulb.
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2.

FLASHCARD QUESTION

Front

Turbine Noun

[tur-bin]

Back

Turbine


A machine with blades that are rotated by a moving fluid, such as wind or water, to rotate a shaft.

Example: This diagram shows how a fluid, like steam, pushes against the curved blades of a turbine, causing the central shaft to rotate and generate power.
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3.

FLASHCARD QUESTION

Front

Faraday's law of induction Noun

[fair-uh-dey's law uv in-duhk-shun]

Back

Faraday's law of induction


The principle stating that a changing magnetic field within a closed loop of wire induces an electromotive force (voltage).

Example: Moving a magnet through a coil of wire changes the magnetic field, which induces an electric current in the wire, as shown by the meter.
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4.

FLASHCARD QUESTION

Front

Magnetic flux Noun

[mag-net-ik fluhks]

Back

Magnetic flux


A measurement of the total magnetic field lines passing through a specific area, indicating the strength of the magnetic field.

Example: This diagram shows the invisible magnetic field lines around a bar magnet. Magnetic flux is a measure of how many of these lines pass through an area.
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5.

FLASHCARD QUESTION

Front

Electromotive force (EMF) Noun

[uh-lek-troh-moh-tiv fors]

Back

Electromotive force (EMF)


The energy per unit of electric charge that is imparted by an energy source, creating a potential difference or voltage.

Example: This diagram shows that inside a power source like a battery, a force (EMF) separates positive and negative charges, creating the energy to push electricity through a circuit.
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6.

FLASHCARD QUESTION

Front

Alternating current (AC) generator Noun

[awl-ter-ney-ting kur-uhnt jen-uh-rey-ter]

Back

Alternating current (AC) generator


A type of electric generator that produces an electric current that periodically reverses its direction of flow.

Example: This diagram shows an AC generator. Rotating a wire loop (conductor) inside a magnetic field generates electricity, which is collected by slip-rings, creating an alternating current.
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7.

FLASHCARD QUESTION

Front

Slip rings Noun

[slip ringz]

Back

Slip rings


Electromechanical components in an AC generator that allow the transfer of power and signals from a rotating to a stationary structure.

Example: This diagram shows how slip rings use rotating rings and stationary brushes to transfer electricity between spinning cables and fixed cables in a generator.
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