ACR-101 Unit 01 End of Unit Test

At standard conditions on the Celsius scale, water will boil at ____.

• 212°C

• 32°C

• 100°C

• 0°C

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

• True

• False

PSIG indicates ____.

• pounds per square inch gauge pressure

• pounds per square inch gravity pressure

• pounds per square inch of gravity

• pounds per square inch of pressure absolute

The Fahrenheit scale is used in the English measurement system by the United States.

• True

• False

The temperature on the Celsius scale where all molecular activity stops is ____.

• -293°C

• -273°C

• -459.6°C

• -460°C

Atmospheric pressure in inches of mercury (in. Hg) decreases

_______ in. per 1000 feet increase in elevation.

• 1

• 2

• 3

• 4

Earth’s atmosphere exerts a weight or pressure of

_____ psi at sea level.

• 14.696

• 15

• 15.696

• 14

A Bourdon tube is often found in a(n) ____.

• mercury thermometer

• mercury barometer

• pressure gauge

• aneroid barometer

The standard atmospheric pressure at sea level is ____.

• 29.92 in. Hg

• 29.83 in. Hg

• 29.71 in. Hg

• 29.60 in. Hg

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

• 6,520 Btu

• 1,304 Btu

• 2,608 Btu

• 3,912 Btu