Chapter 8 and 9 Review

What happens to refrigerant pressure when it enters the metering device?

• Increases

• Decreases

• Stays the same

• Doubles

True or False: The evaporator is responsible for releasing heat into the environment.

• True

• False

Which component converts low-pressure vapor into high-pressure vapor?

• Condenser

• Evaporator

• Compressor

• Metering device

What does a thermal overload device protect a compressor from?

• Overcooling

• Overheating

• Pressure loss

• Refrigerant leaks

What is the purpose of a sight glass in an HVAC system?

• Check refrigerant level

• Monitor oil levels

• Regulate compressor speed

• Filter contaminants

True or False: The condenser releases heat absorbed by the evaporator.

• True

• False

What is the most commonly used air-cooled evaporator type?

• Plate

• Fin-and-tube

• Microchannel

• Natural-draft

Which system component directs airflow in air ducts and cabinets?

• Evaporator

• Baffles

• Condenser

• Capillary tube

Why is a capillary tube often placed in contact with the suction line?

• To heat refrigerant

• To cool refrigerant

• To increase flow

• To regulate oil levels

Which metering device type responds to load changes?

• Fixed orifice

• Capillary tube

• TXV

• Piston