1. What is the primary function of an air conditioning system?
o A) Heat the air only
o B) Control temperature, humidity, air movement, and air quality
o C) Ventilate the space only
o D) Filter air only
o ANSWER : B
2. What does HVAC stand for?
o A) High Velocity Air Conditioning
o B) Heating, Ventilation, and Air Conditioning
o C) Heavy Variable Air Control
o D) High Volume Atmospheric Control
o ANSWER : B
3. What is a ton of refrigeration?
o A) 10,000 BTU/hr
o B) 12,000 BTU/hr
o C) 15,000 BTU/hr
o D) 20,000 BTU/hr
o ANSWER : B
4. What does BTU stand for?
o A) Basic Thermal Unit
, o B) British Thermal Unit
o C) Building Temperature Unit
o D) Base Transfer Unit
o ANSWER : B
5. What is sensible heat?
o A) Heat that changes temperature without changing state
o B) Heat that changes state without changing temperature
o C) Heat that cannot be measured
o D) Heat from the sun only
o ANSWER : A
6. What is latent heat?
o A) Heat that changes temperature only
o B) Heat that changes state without changing temperature
o C) Heat from radiation
o D) Heat that is lost
o ANSWER : B
7. What is the standard atmospheric pressure at sea level?
o A) 12.7 psia
o B) 14.7 psia
o C) 16.7 psia
o D) 18.7 psia
o ANSWER : B
8. What happens to air pressure as altitude increases?
o A) It increases
o B) It decreases
o C) It stays the same
o D) It fluctuates randomly
, o ANSWER : B
9. What is superheat?
o A) Temperature above boiling point at a given pressure
o B) Temperature below freezing point
o C) Maximum heat capacity
o D) Heat from electrical sources
o ANSWER : A
10.What is subcooling?
o A) Cooling below room temperature
o B) Cooling a liquid below its saturation temperature
o C) Freezing a liquid
o D) Precooling a space
o ANSWER : B
11.What is relative humidity?
o A) The total moisture in air
o B) The ratio of actual moisture to maximum moisture air can hold
o C) The dew point temperature
o D) The wet bulb temperature
o ANSWER : B
12.What is dew point?
o A) The temperature at which moisture condenses
o B) The boiling point of water
o C) The freezing point of water
o D) The maximum temperature
o ANSWER : A
13.What instrument measures relative humidity?
o A) Thermometer
, o B) Barometer
o C) Psychrometer
o D) Manometer
o ANSWER : C
14.What is wet bulb temperature?
o A) Temperature of water
o B) Temperature indicated by a thermometer with wet wick
o C) Temperature during rain
o D) Outdoor temperature
o ANSWER : B
15.What is dry bulb temperature?
o A) Temperature in desert
o B) Actual air temperature measured by regular thermometer
o C) Temperature without humidity
o D) Indoor temperature only
o ANSWER : B
16.What does CFM stand for?
o A) Cubic Feet per Minute
o B) Cool Fan Motor
o C) Constant Flow Method
o D) Calibrated Filter Media
o ANSWER : A
17.What is static pressure in HVAC?
o A) Pressure when system is off
o B) Pressure exerted perpendicular to flow
o C) Atmospheric pressure
o D) Refrigerant pressure
o A) Heat the air only
o B) Control temperature, humidity, air movement, and air quality
o C) Ventilate the space only
o D) Filter air only
o ANSWER : B
2. What does HVAC stand for?
o A) High Velocity Air Conditioning
o B) Heating, Ventilation, and Air Conditioning
o C) Heavy Variable Air Control
o D) High Volume Atmospheric Control
o ANSWER : B
3. What is a ton of refrigeration?
o A) 10,000 BTU/hr
o B) 12,000 BTU/hr
o C) 15,000 BTU/hr
o D) 20,000 BTU/hr
o ANSWER : B
4. What does BTU stand for?
o A) Basic Thermal Unit
, o B) British Thermal Unit
o C) Building Temperature Unit
o D) Base Transfer Unit
o ANSWER : B
5. What is sensible heat?
o A) Heat that changes temperature without changing state
o B) Heat that changes state without changing temperature
o C) Heat that cannot be measured
o D) Heat from the sun only
o ANSWER : A
6. What is latent heat?
o A) Heat that changes temperature only
o B) Heat that changes state without changing temperature
o C) Heat from radiation
o D) Heat that is lost
o ANSWER : B
7. What is the standard atmospheric pressure at sea level?
o A) 12.7 psia
o B) 14.7 psia
o C) 16.7 psia
o D) 18.7 psia
o ANSWER : B
8. What happens to air pressure as altitude increases?
o A) It increases
o B) It decreases
o C) It stays the same
o D) It fluctuates randomly
, o ANSWER : B
9. What is superheat?
o A) Temperature above boiling point at a given pressure
o B) Temperature below freezing point
o C) Maximum heat capacity
o D) Heat from electrical sources
o ANSWER : A
10.What is subcooling?
o A) Cooling below room temperature
o B) Cooling a liquid below its saturation temperature
o C) Freezing a liquid
o D) Precooling a space
o ANSWER : B
11.What is relative humidity?
o A) The total moisture in air
o B) The ratio of actual moisture to maximum moisture air can hold
o C) The dew point temperature
o D) The wet bulb temperature
o ANSWER : B
12.What is dew point?
o A) The temperature at which moisture condenses
o B) The boiling point of water
o C) The freezing point of water
o D) The maximum temperature
o ANSWER : A
13.What instrument measures relative humidity?
o A) Thermometer
, o B) Barometer
o C) Psychrometer
o D) Manometer
o ANSWER : C
14.What is wet bulb temperature?
o A) Temperature of water
o B) Temperature indicated by a thermometer with wet wick
o C) Temperature during rain
o D) Outdoor temperature
o ANSWER : B
15.What is dry bulb temperature?
o A) Temperature in desert
o B) Actual air temperature measured by regular thermometer
o C) Temperature without humidity
o D) Indoor temperature only
o ANSWER : B
16.What does CFM stand for?
o A) Cubic Feet per Minute
o B) Cool Fan Motor
o C) Constant Flow Method
o D) Calibrated Filter Media
o ANSWER : A
17.What is static pressure in HVAC?
o A) Pressure when system is off
o B) Pressure exerted perpendicular to flow
o C) Atmospheric pressure
o D) Refrigerant pressure
