Chapter 5 HVAC Delivery Systems
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
1) In HVAC the term “zone” means 1) _______
A) An area with a single wall orientation.
B) An area served by a single thermostat.
C) An area served by an air handling unit.
2) Space temperature can be controlled by which of the following? Select all that apply. 2) _______
A) Changing the temperature of the supply air.
B) Changing both the temperature and the flow of supply air.
C) Changing the flow of the supply air.
3) An air terminal can be placed in which of the following locations? Select all that apply. 3) _______
A) Under a window. B) Suspended, exposed.
C) In a soffit. D) Above a ceiling.
4) Most controls installed today in commercial buildings are which of the following? 4) _______
A) Electric. B) Pneumatic. C) Direct digital.
5) The management level hardware of a distributed control system is generally which of the
following?
5) _______
A) Mainframe computer
B) Multiprocessor computer
C) Personal computer
6) The normal position of as valve or damper is which of the following? 6) _______
A) The position (open or closed) that the device assumes with no signal.
B) The mathematical mean position of the valve.
C) The position on the device when normal operations are in effect.
7) What is problematic with single zone, constant volume systems? Select all that apply. 7) _______
A) They cannot provide temperature control for multiple spaces.
B) They waste energy and are banned by most codes.
C) They can only cool; heating needs to be a separate system.
D) Rooms are stuffy due to inherently poor air flow.
8) What is problematic with single zone, constant volume reheat systems? Select all that apply. 8) _______
A) They waste energy and are banned by most codes.
B) They can only cool; heating needs to be a separate system.
C) Rooms are stuffy due to inherently poor air flow.
D) They cannot provide temperature control for multiple spaces.
9) Which is used extensively in commercial buildings despite potential “stuffiness” during light
load conditions?
9) _______
A) Chilled beam.
B) Multiple zone VAV.
C) Fan terminal units.
D) Fan coils.
E) VAV Multizone.
10) Which is least flexible for adding or changing zones after installation? 10)
______
A) Multiple zone VAV.
B) Dual duct VAV.
C) VAV Multizone.
D) PTAC.
E) Fan coils.
11) Which system required the least maintenance in occupied space? 11)
______
A) Dual duct VAV.
B) Fan coils.
C) PTAC.
D) VAV Multizone.
E) Fan terminal units.
12) Which of these systems can keep good air flow during the heating mode? Select all that apply. 12)
______
A) Fan coils.
B) Chilled beam.
C) Fan terminal units.
D) Multiple zone VAV.
E) Dual duct VAV.
13) Which of these systems uses a small amount of central air to induce the flow of room air? 13)
______
A) Fan coils.
B) PTAC.
C) Dual duct VAV.
D) Chilled beam.
E) Fan terminal units.
14) Which of these systems must be placed on an outside wall? 14)
______
A) Fan terminal units.
B) Chilled beam.
C) Fan coils.
D) PTAC.
E) Dual duct VAV.
15) Which of these systems needs a dedicated outside air system, or “DOAS”? 15)
______
A) Fan terminal units.
B) Chilled beam.
C) Multiple zone VAV.
D) Fan coils.
E) PTAC.
