CH 83 Heat & Air Conditioning Fundamentals

Name the 3 basic states of matter?

• hot, cold and frozen

• liquid, solid and gas

• electrical, hydraulic and mechanical

• mind, matter and molecules

The hotter the object............

• the faster the molecules move

• the slower the molecules move

• no change

_____occurs when vapor changes back into a liquid.

• condensation

• evaporation

• convection

• conduction

At room temperature, hydrogen and oxygen modules are fluid and form a liquid.

• True

• False

How can you change the boiling point of water?

• with additional liquids such as ethel glycol

• changing pressure on liquid

• changing altitude

• all of the above

Current late model cars use the refrigerant.........

• R-134A

• R-12

• Aerosol

Pump that pressurizes refrigerant and forces it through the system.

• compressor

• flow control pump

• receiver dryer pump

• blower

Substance that carries heat through the system to lower air temperature in the vehicle.

• Evaporator

• Condensor

• Refrigerant

• Coolant

A radiator like device used in the A/C system, transfers heat from the refrigerant to the outside air is a.......

• condensor

• evaporator

• heater core

• none of the above

The evaporator is usually mounted on the......

• inside the vehicle

• outside the vehicle

• can be mounted inside or outside