ACR-101 Unit 3 Quiz (CRF)

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

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

• The ice gets colder.

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

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

Ice melts in iceboxes because _____.

• heat enters when the door is opened

• heat flows through the insulated walls

• All answers are correct

• heat enters when warm food is placed in the icebox.

High temperature refrigeration is that produced by _____.

• heat from a furnace

• the freezer section of a refrigerator

• an air-conditioning system

• the vegetable cooling system of a refrigerator

Refrigeration can be described as:

• the process of introducing heat to a location where it is not wanted

• the process of removing heat from a place where it is not wanted to a place where it makes little or no difference

• the process of making products cold

• None of the above.

The temperature inside the refrigerator fresh food section should be about:

• 25°F

• 30°F

• 35°F

• 40°F

The relationship correlates the vapor pressure and the boiling point of water and is the basis for controlling the cooling system's temperature.

• temperature/pressure

• boiling/pressure

• boiling/vapor

• temperature/vapor

The ___ are used to change the vapor to a liquid and the liquid form back into a vapor, the refrigeration cycle.

• condenser and evaporator

• condenser and compressor

• expansion device and evaporator

• compressor and expansion device

The evaporator in a refrigeration system ___ .

• reduces the boiling point of the refrigerant

• absorbs heat from the product to be cooled

• condenses the refrigerant

• compresses the refrigerant vapor

Reciprocating compressor have:

• a large fan compressor component

• a rotor to compress the refrigerant

• two scrolls that mesh together

• a piston and cylinder

The condenser ___.

• All of the above.

• controls the refrigerant flow throughout the system

• rejects the heat from the refrigerant

• adds superheat to the refrigerant