Multiple Choice: Choose the best answer

_____ 11. A door cut establishes a return path that is isolated from a central return. This practice is:

Not recommended by ACCA

Endorsed by ACCA

Up to code but not recommended by ACCA

Up to code and endorsed by ACCA

_____ 12. A furnace with a blower that is below the heat exchanger is known as a/an:

Downflow

Couterflow

Upflow

Horizontal

_____ 13. A furnace with a blower that is above the heat exchanger is known as a/an:

Downflow

Counterflow

Upflow

Both A and B

_____ 14. A furnace that does not use a blower is known as a/an:

Gravity Feed

Multi-poise

Low-Boy

Counterflow

_____ 15. To figure out the velocity, the __________ needs to be known.

CFM

Gauge of the metal

Weight of the metal

All of the above

2.

_____ 16. Return air can be pulled from:

Garages

Attics

Laundry rooms

None of the above

_____ 17. Return air can be pulled from:

Laundry rooms

Bathrooms

Kitchens

Dining rooms

_____ 18. The sum of the duct run lengths and the fittings equivalent lengths will give you the:

Partial effective length

Total effective length

Total equivalent length

Synergistic effect

_____ 19. A supply air terminal that discharges air in many directions and multiple plains is known as a:

Register

Grille

Diffuser

Damper

_____ 20. A plume of cold air discharged from a ceiling or high side wall outlet falls into the occupied zone before being mixed with room air is called:

Rise

Drop

Sag

Lift