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NATE AIR DISTRIBUTION EXAM GUIDE / QUESTIONS
AND VERIFIED SOLUTIONS 2025/2026 LATEST
UPDATE !!
<question: The density of air is
A: How much air weighs per cubic foot
B: How much volume one pound of air occupies
C: The ratio of the weight of water to that of the same volume of water
D: The ratio of the amount of water vapor contained in a cu. ft. of air to the
amount of moisture held at saturation - (answers)A: How much air weighs per
cubic foot
The specific volume of air is
A: How much air weighs per cubic foot
B: How much volume one pound of air occupies
C: The ratio of the weight of water to that of the same volume of water
, 2
D: The ratio of the amount of water vapor contained in a cu. ft. of air to the
amount of moisture held at saturation - (answers)B: How much volume one
pound of air occupies
The relative humidity of air is
A: The percent of moisture air is holding as opposed to the amount it could hold
if it were saturated
B: Always less than 100%
C: The most accurate measurement of how much water vapor is in a given body
of air
D: Used as a multiplier to size humidifiers - (answers)A: The percent of moisture
air is holding as opposed to the amount it could hold if it were saturated
As air is heated it
A: Contracts
B: Expands
, 3
C: Does not change its volume
D: Becomes more dense - (answers)B: Expands
The air pressure in a sealed balloon is
A: Static pressure
B: Velocity pressure
C: A combination of static and velocity pressures
D: None of the above - (answers)A: Static pressure
A blower connected to a length of duct
A: Creates static pressure which is then converted to velocity pressure
B: Creates velocity pressure directly
C: Creates resistance to the flow of air
NATE AIR DISTRIBUTION EXAM GUIDE / QUESTIONS
AND VERIFIED SOLUTIONS 2025/2026 LATEST
UPDATE !!
<question: The density of air is
A: How much air weighs per cubic foot
B: How much volume one pound of air occupies
C: The ratio of the weight of water to that of the same volume of water
D: The ratio of the amount of water vapor contained in a cu. ft. of air to the
amount of moisture held at saturation - (answers)A: How much air weighs per
cubic foot
The specific volume of air is
A: How much air weighs per cubic foot
B: How much volume one pound of air occupies
C: The ratio of the weight of water to that of the same volume of water
, 2
D: The ratio of the amount of water vapor contained in a cu. ft. of air to the
amount of moisture held at saturation - (answers)B: How much volume one
pound of air occupies
The relative humidity of air is
A: The percent of moisture air is holding as opposed to the amount it could hold
if it were saturated
B: Always less than 100%
C: The most accurate measurement of how much water vapor is in a given body
of air
D: Used as a multiplier to size humidifiers - (answers)A: The percent of moisture
air is holding as opposed to the amount it could hold if it were saturated
As air is heated it
A: Contracts
B: Expands
, 3
C: Does not change its volume
D: Becomes more dense - (answers)B: Expands
The air pressure in a sealed balloon is
A: Static pressure
B: Velocity pressure
C: A combination of static and velocity pressures
D: None of the above - (answers)A: Static pressure
A blower connected to a length of duct
A: Creates static pressure which is then converted to velocity pressure
B: Creates velocity pressure directly
C: Creates resistance to the flow of air
