Duct Work

What is the primary function of duct work in a building's HVAC system?

• To transport air throughout the building

• To provide structural support

• To insulate electrical wiring

• To supply water to the building

Which material is most commonly used for duct work due to its durability and cost-effectiveness?

• Copper

• Aluminum

• Galvanized steel

• Plastic

In terms of fluid dynamics, what principle explains the movement of air through duct work?

• Bernoulli's principle

• Pascal's law

• Archimedes' principle

• Boyle's law

What is the main reason for insulating duct work in a building?

• To prevent heat loss or gain

• To reduce noise

• To increase air pressure

• To prevent air leakage

Tags

NGSS.MS-PS3-3

Which of the following is a common method for testing the efficiency of duct work?

• Smoke test

• Pressure test

• Sound test

• Temperature test

What is the effect of a leak in the duct work on the HVAC system's efficiency?

• Increases efficiency

• Decreases efficiency

• No effect

• Improves air quality

Tags

NGSS.MS-PS3-3

Which type of duct work is most suitable for tight spaces due to its flexibility?

• Rigid duct

• Flexible duct

• Semi-rigid duct

• Flat oval duct

What is the role of a damper in duct work?

• To regulate airflow

• To filter air

• To heat air

• To cool air

Tags

NGSS.MS-ETS1-1

In a scientific experiment, how can you measure the airflow rate through a duct?

• Using an anemometer

• Using a barometer

• Using a hygrometer

• Using a thermometer

What is the impact of duct work size on air velocity?

• Larger ducts increase velocity

• Smaller ducts decrease velocity

• Larger ducts decrease velocity

• Size has no impact on velocity

Tags

NGSS.MS-ESS2-5