Book 2: 4-22 - "Air Conditioning Systems"

Question 1

The function an air conditioning system that provides for the movement of air in each space to assist in dissipation of latent heat from occupants and to prevent a buildup of odours which may develop in stagnant areas is:
Select one:

A. Humidification

B. Filtration

C. Air circulation

D. Ventilation

E. Dehumidification

Answer 1

C. Air circulation

Question 2

The cold deck air in a dual duct system is supplied at approximately _____ on a year round basis.
Select one:

A. 20.5°C (69°F)

B. 18.5°C (65°F)

C. 12.5°C (55°F)

D. 15.5°C (60°F)

E. 10°C (50°F)

Answer 2

C. 12.5°C (55°F)

Question 3

The amount of outdoor air for a 12.5°C (55°F) mixed air temperature is reduced to approximately _____ during the coldest winter days.
Select one:

A. 15%

B. 25%

C. 5%

D. 10%

E. 20%

Answer 3

A. 15%

Question 4

One of the two compartments in a window air conditioner contains the supply air plenum, a low efficiency air filter and the:
Select one:

A. Evaporator coil to provide heating

B. Evaporator coil to provide cooling

C. Condenser coil to provide cooling

D. Evaporator coil to provide ventilation

E. Condenser coil to provide heating

Answer 4

B. Evaporator coil to provide cooling

Question 5

The single zone, constant air volume system is similar to the _____ system.
Select one:

A. Multi-zone

B. Forced air furnace

C. Rooftop unit system

D. Terminal reheat

E. Dual duct

Answer 5

C. Rooftop unit system

Question 6

One of the two compartments in a window air conditioner contains the compressor, _____ and the condenser fan.
Select one:

A. Water cooled evaporator coil

B. Air cooled evaporator coil

C. Air heated condenser coil

D. Air cooled condensing coil

E. Water cooled condensing coil

Answer 6

D. Air cooled condensing coil

Question 7

In central or combined air conditioning systems free cooling can be achieved when the supply air temperature for building is:
Select one:

A. 15.5°C (60°F)

B. 10°C (50°F)

C. 20.5°C (69°F)

D. 12.5°C (55°F)

E. 18.5°C (65°F)

Answer 7

D. 12.5°C (55°F)

Question 8

The category of air conditioning system that provides each individual room or zone with a self-contained air conditioning unit to maintain desired environmental conditions is the _____ system.
Select one:

A. Terminal reheat

B. Dual Duct

C. Combined

D. Central

E. Unitary

Answer 8

E. Unitary

Question 9

Regardless of the type of air conditioning system, the air is mainly conditioned in a/an:
Select one:

A. Heating coil

B. Forced air furnace

C. Air handling unit

D. Air conditioner

E. Cooling coil

Answer 9

C. Air handling unit

Question 10

The most common central air conditioning system is the:
Select one:

A. Forced air furnace

B. Terminal reheat system

C. Dual duct system

D. Multi-zone system

E. Roof top unit

Answer 10

A. Forced air furnace

Question 11

The high velocity terminal reheat system requires a terminal reheat box in each zone to:
Select one:

A. Reduce the air flow to low velocity

B. Reduce the air flow to high velocity

C. Increase the air flow to high velocity

D. Reduce the air temperature to low temperature

E. Reduce the air pressure to low pressure

Answer 11

A. Reduce the air flow to low velocity

Question 12

The function an air conditioning system that provides a source of cooling to offset the heat gain through the building exterior shell from solar radiation, the atmosphere surrounding the building, and from internal sources of heat is:
Select one:

A. Cooling

B. Humidification

C. Ventilation

D. Filtration

E. Heating

Answer 12

A. Cooling

Question 13

The category of air conditioning system that provides air conditioning in an air handling unit located in a central mechanical room and is ducted to all areas of the building where supplementary equipment located in each zone to provide heating and additional cooling if required is the _____ system.
Select one:

A. Combined

B. Central

C. Dual Duct

D. Terminal reheat

E. Unitary

Answer 13

A. Combined

Question 14

The function an air conditioning system that provides a source of moisture to maintain acceptable conditions for human comfort and to minimize the effects of static electricity is:
Select one:

A. Filtration

B. Cooling

C. Ventilation

D. Humidification

E. Heating

Answer 14

D. Humidification

Question 15

In central or combined air conditioning systems for larger buildings the mixed air temperature is controlled at:
Select one:

A. 12.5°C (55°F)

B. 15.5°C (60°F)

C. 10°C (50°F)

D. 20.5°C (69°F)

E. 18.5°C (65°F)

Answer 15

A. 12.5°C (55°F)

Question 16

Each application of a heating, ventilation and air conditioning system is unique and its requirements vary in accordance with all except:
Select one:

A. Local weather conditions

B. Construction

C. Geographical location

D. Time of occupancy

E. Building layout

Answer 16

D. Time of occupancy

Question 17

The multi-zone system may use a preheat coil in colder climates for heating mixed air to _____ a supplementary humidifier can be installed in the hot deck for winter humidification.
Select one:

A. 20.5°C (69°F)

B. 18.5°C (65°F)

C. 15.5°C (60°F)

D. 10°C (50°F)

E. 12.5°C (55°F)

Answer 17

E. 12.5°C (55°F)

Question 18

The air handling unit may include all except a/an:
Select one:

A. Motorized dampers for airflow control

B. Fan

C. Source of heating and cooling

D. Air sanitizer

E. Filters

Answer 18

D. Air sanitizer

Question 19

The category of air conditioning system that provides air filtration, heating, cooling, and/or humidification in an air handling unit located in a central mechanical room in the building is the _____ system.
Select one:

A. Unitary

B. Central

C. Dual Duct

D. Combined

E. Terminal reheat

Answer 19

B. Central

Question 20

The function an air conditioning system that provides for the removal of contaminants such as dust, dirt, smoke, pollen, and lint from recirculated air and from outside air before it is:
Select one:

A. Humidification

B. Cooling

C. Filtration

D. Ventilation

E. Heating

Answer 20

C. Filtration