Unit 28 Quiz

CO2 is commonly known as

• carbon dioxide.

• carbon monoxide.

• chlorine monoxide.

• chlorine dioxide.

CO2 in the solid form is referred to as

• liquid nitrogen.

• liquid ice.

• dry ice.

• dry nitrogen.

Which of the following is a major challenge associated with transport refrigeration?

• The transport vessels are often too small to carry the load.

• The load on the system changes as the vessel travels through different climates.

• All items being transported must be at a temperature lower than 32°F.

• Only fresh foods can be transported long distances without spoiling.

The process of sublimation is most associated with

• dry ice.

• dry nitrogen.

For safety purposes, the maximum pressure of a liquid nitrogen tank used in conjunction with truck refrigeration systems is

• 5 psig.

• 15 psig.

• 25 psig.

• 35 psig.

A eutectic or brine solution can best be described as a(n)

• salt/water solution.

• ice/water mixture.

• water/ammonia solution.

• ammonia/salt mixture.

Transport refrigeration encompasses movement of refrigerated products by

• cars, buses, trains, and boats.

• trains, cars, buses, and boats.

• planes, cars, buses, and trains.

• none of the above.

Transport refrigeration encompasses movement of refrigerated products by:

• planes only.

• trains only.

• trucks only.

• planes, trains, trucks, and boats.

In a truck refrigeration system, the air coming off the evaporator is typically directed:

• down the side walls of the refrigerated space.

• up the side walls of the refrigerated space.

• across the top of the refrigerated space.

• across the bottom of the refrigerated space.

The motor that operates the compressor in a railway refrigeration transport system must be able to: