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How HVAC Works


Quiz Questions

1. Heat always goes from hot body to cold body.
True
False
2. Gases and liquids exert a force on the sides of whatever container they are in. This force is known as ______________ ?
Gravitational force
Molecular force
Pressure
Surface tension
3. Diesel engines ignite their fuel-air mixtures by using ______________ ?
Expansion
Compression
Spark plug
Sublimation
4. Statement 1: More pressure makes it harder for a substance to evaporate or boil
Statement 2: Less pressure makes it easier for substances to boil or evaporate

Choose the right answer
Statement 1 is false
Both Statement 1 and Statement 2 are true
Both Statement 1 and Statement 2 are false
Statement 2 is false
5. The component used in AC systems to exchange heat from the refrigerant to the outside air is _______________ ?
Condenser
Drier filter device
Expander
Compresser
6. The expansion device creates a pressure drop by restricting the flow of refrigerant around the system.
True
False
7. The part of the system that rejects heat into the outside air is known as the ___________ side.
Low
High
Medium
Super low
8. As a liquid, it continues to cool 15-30°F below its boiling point in a process called ___________.
Ultra cooling
Evaporation
Radiation
Sub cooling
9. What is the name of the component in the following picture where black arrow is pointing to?
How HVAC Works
Evaporator
Condenser
Radiator
Steamer
10. _________ Provides the mechanical energy to move refrigerant and manipulate pressures. This is the heart of the system.
Evaporator
Condenser
Compressor
Radiator
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