Refrigeration Exam

PSIG indicates ____.

• pounds per square inch absolute gravity

• pounds per square inch absolute gauge

• pounds per square inch of pressure absolute

• pounds per square inch of gravity

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

• travel farther

• travel faster

• slow down

• travel in more of a parallel direction

Temperature can be thought of as ____.

• the amount of heat in a material

• the density of the material

• a description of the level of heat

• the weight of the total mass of the material

Pure water boils at a temperature of 212°F at which of the following standard conditions?

• 12.967 psi

• 13.967 psi

• 14.967 psi

• 15.967 psi

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

• -400°F

• -460°F

• -0°F

• -562.95°F

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

• mercury barometer

• aneroid barometer

• pressure gauge

• mercury thermometer

A solid material exerts a pressure or force ____.

• in all directions

• downward only

• outward and downward

• outward only

The unit used to measure electrical power is the ____.

• volt

• ampere

• watt

• ohm

What happens when room temperature soda is poured into a glass of ice?

• The ice gets colder.

• The ice melts because it is giving up the "cold" to the soda.

• The ice melts because it is absorbing heat from the soda.

• The ice melts because the soda is colder than the ice.

A liquid material exerts a pressure or force ____.

• in all directions

• downward only

• outward and downward

• outward only