Quiz on Refrigeration Cycle

What is the first step in the refrigeration cycle?

• Metering Device

• Evaporator

• Condenser

• Compressor

What does the 1st Law of Thermodynamics state?

• Energy is always lost in a system

• Energy travels from low to high levels

• Energy cannot be created or destroyed

• Energy can be created and destroyed

What is the purpose of the condenser in the refrigeration cycle?

• To reduce refrigerant pressure

• To convert vapor refrigerant into liquid refrigerant

• To absorb heat from the surroundings

• To create a pressure difference

What is latent heat?

• Heat that changes the temperature of a substance

• Heat that is always lost in a system

• Heat absorbed or released during a change of state

• Heat that can be measured directly

What happens during the superheating process?

• The liquid refrigerant is converted to vapor

• The vapor is cooled below its boiling point

• The vapor temperature is raised above its boiling point

• The refrigerant is condensed into a liquid

What is the function of the metering device?

• To absorb heat from the surroundings

• To reduce the refrigerant pressure

• To create a flow of refrigerant

• To convert vapor refrigerant into liquid refrigerant

What is the main function of the evaporator?

• To cool the refrigerant

• To absorb heat from the outer surroundings

• To compress the refrigerant

• To convert liquid refrigerant into vapor

What does the 2nd Law of Thermodynamics state?

• Heat can flow from cold to hot

• Energy cannot be created or destroyed

• Energy is always conserved

• Heat travels from hot to cold

What is sensible heat?

• Heat that is absorbed during vaporization

• Heat that is released during fusion

• Heat that changes the state of a substance

• Heat that can be measured by temperature change

What occurs in the compressor stage?

• The refrigerant changes from liquid to vapor

• The refrigerant pressure is reduced

• The refrigerant is cooled

• The refrigerant is heated and pressurized