Practice # 6 AC Theory

Practice # 6 AC Theory

Assessment

Flashcard

Physics

Professional Development

Practice Problem

Hard

Created by

Wayground Content

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15 questions

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1.

FLASHCARD QUESTION

Front

What is induced when a conductor is moved through a magnetic field?

Back

Electromotive force (EMF) is induced in the conductor.

2.

FLASHCARD QUESTION

Front

What does it mean when two waveforms are out of phase?

Back

It means that the two waveforms go through their maximum and minimum points at different times.

3.

FLASHCARD QUESTION

Front

What is the term for the induced voltage or current flowing at any instant during a cycle?

Back

Instantaneous value.

4.

FLASHCARD QUESTION

Front

What occurs at 90° and 270° in a sine wave of voltage?

Back

The largest single positive value occurs at 90°, and the largest single negative value occurs at 270°.

5.

FLASHCARD QUESTION

Front

What is the relationship between peak value and effective value in a sine wave?

Back

Peak value is 1.41 times the effective value.

6.

FLASHCARD QUESTION

Front

What is the effective value also known as?

Back

RMS (Root Mean Square) value.

7.

FLASHCARD QUESTION

Front

Define electromotive force (EMF).

Back

EMF is the voltage generated by a source, such as a battery or generator, that causes current to flow in a circuit.

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