Air Conditioning system Flashcards
Dual duct central air conditioning systems:
A) Use terminal reheat boxes B) Do not provide outside air C) Use variable air volume boxes D) Do not provide individual zone control E) Use hot and cold air mixing boxes
E) Use hot and cold air mixing boxes
Which central air conditioning system has zone temperature control provided by coils in the branch ducts?
A) Terminal reheat system B) Unit ventilator system C) Unitary system D) Heat pump system E) Constant air volume system
A) Terminal reheat system
The unitary air conditioning system that uses a direct expansion refrigeration system to provide cooling and dehumidification in a local area without ductwork is called a/an:
A) High velocity terminal re-heat system B) Rooftop unit C) Window air conditioner D) Unit ventilator E) Multi-zone system
C) Window air conditioner
A source of cooling is required to:
A) Replace the ventilation air
B) Offset the heat loss to the atmosphere
C) Offset the humidity gain
D) Replace the exhaust air
E) Offset the heat gain from the atmosphere
E) Offset the heat gain from the atmosphere
The air conditioning equipment not meant for multi-zone usage is a:
A) High velocity terminal reheat system B) Multi-zone system C) Dual duct system D) Low velocity terminal reheat system E) Roof top unit
E) Roof top unit
For air conditioning, which is responsible for getting outside air into the building to replenish the oxygen supply?
A) Cooling B) Ventilation C) Heating D) Air circulation E) Humidification
B) Ventilation
Which of the following statements about the unit ventilators is false?
A) The units provide heating
B) The units provide cooling only
C) The units are used in areas with limited available floor space
D) The units provide individual room temperature control
E) Room air is mixed with outside air
B) The units provide cooling only
Which of the following statements about multizone systems is true?
A) When hot deck is fully opened the cold deck is fully closed
B) The system cannot operate a humidifier
C) The dampers are out of phase by 10°C
D) All of the above
E) The cooling coils are installed in-line
A) When hot deck is fully opened the cold deck is fully closed
Air movement is required in each space to assist in dissipation of _____ and to prevent a build up of _____, which may develop in stagnant areas.
A) Heat, moisture B) Odours, moisture C) Heat, odours D) Coolness, heat E) Odours, moisture
C) Heat, odours
Unitary, Central, and Combined are:
A) Hot air heating systems B) Main categories of air compressors C) Main air distribution duct systems D) Main categories of air conditioning systems E) Types of Condensers
D) Main categories of air conditioning systems