Residential HVAC Installation Practice Exam

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Prepare for the Residential HVAC Installation Exam with this comprehensive quiz. Test your knowledge with multiple-choice questions and get ready to excel in your HVAC installation career.

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

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What does the duct pressure equal according to the text?

Velocity pressure minus static pressure
Velocity pressure multiplied by static pressure
Velocity pressure plus static pressure
Velocity pressure divided by static pressure

The correct answer is: Velocity pressure plus static pressure

The correct answer is velocity pressure plus static pressure because duct pressure in a ventilation system is a combination of two components: velocity pressure and static pressure. Velocity pressure represents the kinetic energy associated with the air velocity in the duct, while static pressure represents the potential energy exerted by the air due to the ductwork's configuration and resistance. When these two pressures are added together, we get the total duct pressure in the system. Hence, the correct answer is C: Velocity pressure plus static pressure.