ACR 206 FINAL

CO2 is commonly known as

• carbon dioxide
• carbon monoxide
• oxygen
• nitrogen

CO2 in the solid form is referred to as

• frozen air
• dry ice
• solid oxygen
• carbon dioxide crystals

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

• Limited storage capacity
• High energy consumption
• Maintaining the desired temperature
• Difficulty in controlling humidity

The process of sublimation is most associated with

• Solid to gas

  (dry ice.)

• Solid to liquid
• Gas to solid
• Liquid to gas

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

• 25 psi

• 30 psi
• 10 psi
• 50 psi

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

• .ammonia/salt mixture.

• water/ammonia solution.

• ice/water mixture.

• salt/water solution.

Transport refrigeration encompasses movement of refrigerated products by:

(mark all that apply)

• Refrigerated airplanes
• Refrigerated bicycles
• Refrigerated trains
• Specialized vehicles or containers

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

• To the truck's cargo area
• To the truck's fuel tank
• To the truck's exhaust system
• To the truck's engine

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

• solar panel
• diesel engine
• electric motor able to operate at different frequencies

• wind turbine

The process of transporting a refrigerated truck on a railroad flat car is called

• piggybacking

• Truck transfer
• Refrigerated shipping
• Railway transportation