Question 1

What is the difference between a mercury barometer and an aneroid barometer?

Accepted Answer

The mercury  barometer compares atmospheric pressure against the weight of a mercury column. The aneroid barometer compares atmospheric pressure against pressure inside closed bellows .

Question 2

PSIG indicates ____.

Accepted Answer

A)  pounds per square inch gravity pressure 
B)  pounds per square inch gauge pressure 
C)  pounds per square inch of pressure absolute 
D)  pounds per square inch of gravity 
A)  pounds per square inch gravity pressure 
B)  pounds per square inch gauge pressure 
C)  pounds per square inch of pressure absolute 
D)  pounds per square inch of gravity B

Question 3

The laws of thermodynamics can help us to understand what heat is all about.

Accepted Answer

A) True 
 B)False  True

Question 4

Atmospheric pressure in inches of mercury ( in. Hg ) decreases ____________________ in. per 1000 feet increase in elevation.

Accepted Answer

The answer of Atmospheric pressure in inches of mercury (...

Question 5

Heat that changes the temperature of a substance is called ____________________ heat.

Accepted Answer

The answer of Heat that changes the temperature of a...

Question 6

In order for water at 60°F to boil, it must absorb both sensible and latent heat.

Accepted Answer

A) True 
 B)False

Question 7

Both sensible heat and latent heat transfers can be read with a thermometer.

Accepted Answer

A) True 
 B)False

Question 8

How many Btus are required to change one pound of ice at 20°F to steam at 220°F?

Accepted Answer

A)  1,304 Btu 
B)  2,608 Btu 
C)  6,520 Btu 
D)  3,912 Btu 
A)  1,304 Btu 
B)  2,608 Btu 
C)  6,520 Btu 
D)  3,912 Btu

Question 9

What does the first law of thermodynamics state?

Accepted Answer

The first law of thermodynamic

Question 10

The difference in the volume of two substances will determine the heat transfer rate between the substances.

Accepted Answer

A) True 
 B)False

Question 11

Why is radiation the only type of heat transfer that can travel through a vacuum, such as space?

Accepted Answer

Because it is not de

Question 12

How many Btus are required to change five pounds of ice at 20°F to steam at 220°F?

Accepted Answer

A)  1,304 Btu 
B)  2,608 Btu 
C)  6,520 Btu 
D)  3,912 Btu 
A)  1,304 Btu 
B)  2,608 Btu 
C)  6,520 Btu 
D)  3,912 Btu

Question 13

Of the following choices, the warmest temperature is ____.

Accepted Answer

A)  20°C 
B)  303°K 
C)  501°R 
D)  77°F 
A)  20°C 
B)  303°K 
C)  501°R 
D)  77°F

Question 14

Temperature can be thought of as ____.

Accepted Answer

A)  the amount of heat in a material 
B)  the density of the material 
C)  a description of the level of heat 
D)  the weight of the total mass of the material 
A)  the amount of heat in a material 
B)  the density of the material 
C)  a description of the level of heat 
D)  the weight of the total mass of the material

Question 15

Define a Btu.

Accepted Answer

The amount of heat r

Question 16

Raising the vapor temperature above the boiling point is called ____________________.

Accepted Answer

The answer of Raising the vapor temperature above the boiling...

Question 17

Explain heat transfer by conduction .

Accepted Answer

Heat transfer by conduction ca

Question 18

A gauge that reads pressures above and below atmospheric pressure is known as ____________________ gauge.

Accepted Answer

The answer of A gauge that reads pressures above and...

Question 19

As the temperature of a material increases, the molecules in the material ____.

Accepted Answer

A)  stop moving 
B)  travel faster 
C)  slow down 
D)  travel in more of a parallel direction 
A)  stop moving 
B)  travel faster 
C)  slow down 
D)  travel in more of a parallel direction

Question 20

The Fahrenheit absolute scale is called the ____________________ scale.

Accepted Answer

The answer of The Fahrenheit absolute scale is called the...

Exam 1: Heat and Pressure

What is the difference between a mercury barometer and an aneroid barometer?

PSIG indicates ____.

The laws of thermodynamics can help us to understand what heat is all about.

Atmospheric pressure in inches of mercury ( in. Hg ) decreases ____________________ in. per 1000 feet increase in elevation.

Heat that changes the temperature of a substance is called ____________________ heat.

In order for water at 60°F to boil, it must absorb both sensible and latent heat.

Both sensible heat and latent heat transfers can be read with a thermometer.

How many Btus are required to change one pound of ice at 20°F to steam at 220°F?

What does the first law of thermodynamics state?

The difference in the volume of two substances will determine the heat transfer rate between the substances.

Why is radiation the only type of heat transfer that can travel through a vacuum, such as space?

How many Btus are required to change five pounds of ice at 20°F to steam at 220°F?

Of the following choices, the warmest temperature is ____.

Temperature can be thought of as ____.

Define a Btu.

Raising the vapor temperature above the boiling point is called ____________________.

Explain heat transfer by conduction .

A gauge that reads pressures above and below atmospheric pressure is known as ____________________ gauge.

As the temperature of a material increases, the molecules in the material ____.

The Fahrenheit absolute scale is called the ____________________ scale.

Matter and Energy

Refrigeration and Refrigerants

General Safety Practices

Tools and Equipment

Fasteners

Tubing and Piping

Leak Detection, System Evacuation and System Clean-Up

Refrigerant and Oil Chemistry and Managementrecovery, Recycling, Reclaiming, and Retrofitting

System Charging

Calibrating Instruments

Basic Electricity and Magnetism

Introduction to Automatic Controls

Automatic Control Components and Applications

Troubleshooting Basic Controls

Advanced Automatic Controlsdirect Digital Controls Ddc and Pneumatics

Types of Electric Motors

Application of Motors

Motor Controls

Troubleshooting Electric Motors

Evaporators and the Refrigeration System

Condensers

Compressors

Expansion Devices

Special Refrigeration System Components

Application of Refrigeration Systems

Commercial Ice Machines

Special Refrigeration Applications

Troubleshooting and Typical Operating Conditions for Commercial Refrigeration

Electric Heat

Gas Heat

Oil Heat

Hydronic Heat

Indoor Air Quality

Comfort and Psychrometrics

Refrigeration Applied to Air Conditioning

Air Distribution and Balance

Installation

Residential Energy Auditing

Typical Operating Conditions

Troubleshooting

Heat Gain and Heat Loss in Buildings

Air Source Heat Pumps

Geothermal Heat Pumps

Domestic Refrigerators and Freezers

Room Air Conditioners

High-Pressure, Low-Pressure, and Absorption Chilled-Water Systems

Cooling Towers and Pumps

Operation, Maintenance, and Troubleshooting of Chilled-Water Air Conditioning Systems

Commercial Rooftop, Packaged, Variable Refrigerant Flow, and Variable Air Volume Systems

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