HVAC Pretest

If the air temperature gets warmer, but the TOTAL amount of water vapor in the air stays the same, what will happen to the RELATIVE humidity?

• relative humidity will decrease

• relative humidity will increase

• relative humidity will stay the same

Tags

NGSS.MS-ESS2-4

What does HVAC stand for in the context of building systems?

• Heating, Ventilation, and Air Conditioning

• Heat, Vacuum, and Air Circulation

• High Voltage and Current

• Hydraulic, Ventilation, and Air Control

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4

Which of the following is a primary function of an HVAC system?

• To provide electrical power

• To control indoor climate and air quality

• To supply water to buildings

• To manage waste disposal

In an HVAC system, what is the purpose of a thermostat?

• To measure humidity levels

• To regulate temperature

• To filter air

• To control water flow

Tags

NGSS.MS-PS3-3

Which gas is commonly used as a refrigerant in HVAC systems?

• Oxygen

• Nitrogen

• Freon

• Carbon Dioxide

What is the principle of operation for a heat pump in an HVAC system?

• It converts electrical energy into heat

• It transfers heat from a cooler space to a warmer space

• It generates heat through combustion

• It uses solar energy to produce heat

Tags

NGSS.HS-PS3-4

Which component of an HVAC system is responsible for removing heat from the air?

• Compressor

• Evaporator coil

• Condenser coil

• Thermostat

What is the role of the condenser in an HVAC system?

• To absorb heat from the environment

• To release heat to the environment

• To circulate air within a room

• To filter dust particles

How does an air filter in an HVAC system improve air quality?

• By adding moisture to the air

• By removing dust and allergens

• By cooling the air

• By increasing air pressure

What is the significance of the SEER rating in HVAC systems?

• It measures the system's energy efficiency

• It indicates the system's cooling capacity

• It shows the system's heating capacity

• It determines the system's lifespan

Tags

NGSS.HS-ETS1-3