ACR-101 CH12

What is the focus of Unit 12 in Section 3 of the Refrigeration and Air Conditioning Technology book?

• Advanced Thermodynamics

• Basic Electricity and Magnetism

• Fluid Mechanics

• Heat Transfer

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NGSS.MS-PS3-3

NGSS.MS-PS3-4

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Fill in the blank: Section 3 of the Refrigeration and Air Conditioning Technology book is about Basic Automatic Controls, and Unit 12 focuses on ________.

• A) Advanced Thermodynamics

• B) Basic Electricity and Magnetism

• C) Fluid Mechanics

• D) Heat Transfer

Which of the following best describes the structure of an atom?

• A solid sphere

• A nucleus surrounded by electrons

• A single particle

• A flat disk

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NGSS.MS-PS1-1

Atoms with a positive charge are called ______.

• Neutrons

• Electrons

• Protons

• Ions

What is the main difference between conductors and insulators?

• Conductors allow electricity to flow freely, while insulators do not.

• Insulators allow electricity to flow freely, while conductors do not.

• Both conductors and insulators allow electricity to flow freely.

• Neither conductors nor insulators allow electricity to flow freely.

Which of the following best describes how magnetism is used to produce electricity?

• By heating up magnetic materials

• By moving a conductor through a magnetic field

• By aligning magnetic domains

• By using static electricity.

State the differences between alternating current and direct current. Fill in the blank: Alternating current ______, while direct current ______.

• A) flows in one direction, changes direction

• B) changes direction, flows in one direction

• C) is used in batteries, is used in power lines

• D) is used in power lines, is used in batteries

What is the formula for determining electrical power?

• Voltage x Current

• Voltage / Current

• Current / Resistance

• Resistance x Voltage

A solenoid is a type of ______.

• Capacitor

• Inductor

• Resistor

• Transformer

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What is a sine wave?

• A type of electrical signal

• A type of mechanical wave

• A type of sound wave

• A type of light wave

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NGSS.MS-PS4-1