Question 161
To offset the heat gains through a building's exterior shell and from
internal heat sources, an air conditioning system must employ:C
A) a humidifier.
B) a dehumidifier.
C) a cooling source.
D) air recirculation.
E) air filtration.
Question 162
Dehumidification is necessary not only for the comfort of building
occupants, but also to prevent:D
A) shrinkage of the wood in exterior walls.
B) production of static electricity.
C) frost formation in interior walls during winter months.
D) frost formation in exterior walls during winter months.
E) frost-heaving of basement floors during winter months.
Question 163
The application of an air conditioning system depends on the:
1. geographical location.B
2. type of occupancy.
3. local building code.
4. building layout.
5. National Building Code.
A) 1, 2 and 3 ONLY
B) 1, 2 and 4 ONLY
C) 1, 3 and 5 ONLY
D) 1, 2 and 5 ONLY
E) 2, 3 and 4 ONLY
Question 164
When analyzing a building for an air conditioning system, the two most
important considerations include:A
1. Which of the basic requirements must be provide?
2. Which requirements are desirable but not essential?
3. Which system will cost the least?
4. What is the owner's preference?
A) 1 and 2
B) 1 and 3
C) 2 and 3
D) 3 and 4
E) 2 and 5
Question 165
An air handling system located in a single mechanical room that distributes
airconditioned air throughout the building by means of ducts is the
___________ system.A
A) unitary
B) central
C) combined
D) single
E) loop
Question 166
With respect to a central air conditioning system, identify the statement
that is TRUE,C
A) All the controls are in the mechanical room.
B) All the air is conditioned to its final space requirements in the
mechanical room.
C) A supplemental thermostat in each zone may provide for improved zone
temperature control.
D) Conditioned air is always supplied to a single zone.
E) Make-up air is not necessary with modern-day filters.
Question 167
In a combined air conditioning system, the conditioned air supplied from the
mechanical room normally provides:D
A) heating and ventialtion.
B) cooling and humidification.
C) heating and dehumidification.
D) cooling and ventilation.
E) filtration and humidification.
Question 168
The equipment that handles air filtration, air temperature control, air
humidity control, ventilation, and air movement is called a(n):A
A) air handling unit (AHU)
B) air recirc unit (ARU)
C) return air unit (RAU)
D) mixed air unit (MAU)
E) outdoor air unit (OAU)
Question 169
For ventilation, a forced air furnace for a house typically utilizes:A
A) 100% outdoor air.
B) 50% outdoor air and 50% recirculation.
C) a fixed percentage of 10% outdoor air.
D) 100% recirculation air.
E) a variable rate of outdoor air, depending upon time of year.
Question 170
The four (4) possible arrangements of the intake section of an air handling
unit are:D
A) full recirculation, mixed air, exhaust air and supply air.
B) 100% outdoor air, mixed air, exhaust air and fixed percent outdoor air.
C) 100% oudoor air, mixed air fixed percentage outdoor air, and full
recirculation.
D) full recirculation, mixed air, supply air, and fixed percent outdoor air.
Question 171
In air conditioning systems, the type of air intake arrangement in which
"free cooling" is achieved is the:B
A) fixed percentage of outdoor air arrangement.
B) 100% outdoor air arrangement.
C) 100% recirculation arrangement.
D) mixed air arrangement.
E) by-pass air arrangement.
Question 172
In a mixed air system, the outdoor air temperature control uses outdoor air
temperature as a reference to regulate the:A
A) supply air damper and return air damper.
B) supply air damper and mixing air damper.
C) supply air damper, mixing air damper, and relief air damper.
D) mixing air damper and relief air damper.
E) supply air damper only.
Question 173
The outdoor enthalpy control refers to the use of outdoor air enthalpy
content to control ________ air temperature.A
A) return
B) mixed
C) supply
D) exhaust
E) relief air
Question 174
Unitary air conditioning systems are ususally installed for _____________
zone(s).A
A) a single
B) two
C) three
D) four
E) five or more
Question 175
A small air conditioning unit with DX coils, condenser, compressor, fans and
control all located in a closed casing that only provides air friltration,
cooling, ventilation and dehumidfication is called a __________ unit.A
A) packaged
B) rooftop
C) window
D) fan coil
E) central conditioning
Question 176
Specially-designed "process cooling units" used to control the environmental
conditons in a computer room are a variation of:D
A) full recirculation units.
B) unit ventilators.
C) window air conditioners.
D) packaged air conditioners.
E) rooftop air handling units.
Question 177
The unitary air conditioning system installed at the exterior wall of each
room of a building with an adjustable duct connected to outdoors for
provision of minimum outdoor air intake is called a:D
A) fan coil unit.
B) heat pump.
C) packaged unit.
D) unit ventilator.
E) full recirculation unit.
Question 178
Advantages to using a central airconditioning system in a larger building
include:B
1. ease of installation.
2. effective control of noise and vibration.
3. lower space requirements for equipment.
4. minimal cost for ductwork.
5. lower equipment initial capital cost per unit output.
A) 1, 3 and 4 ONLY
B) 2 and 5 ONLY
C) 1, 2 and 4 ONLY
D) 3 and 5 ONLY
Question 179
A basic forced air furnace installed in most residential homes can provide:
1. humidification.B.?
2. fresh air mixing.
3. air filtration.
4. dehumidification.
5. air heating.
A) 1, 2 and 5
B) 2, 3 and 5
C) 3, 4 and 5
D) 1, 2 and 3
Question 180
Which of the following statements for a forced air system used in a
residential house is FALSE?D
A) Can provide humidification.
B) Can provide cooling.
C) Can provide ventilation.
D) Can provide multizone control.
E) Can provide natural gas heating.
Question 181
In a single zone constant air volume system, space conditions are maintained
by adjusting supply air temperature in response to a thermostat located in
the:A
A) room or return air duct.
B) fresh air duct.
C) outdoor space.
D) mixed air duct.
E) supply air duct.
Question 182
By keeping the supply air temperature for a low velocity terminal reheat
system at 12.5°C year-round, this system:C
A) is low in energy consumption.
B) does not require cooling.
C) is high in energy consumption.
D) can not be applied to multizone temperature control.
E) can effectively regulate humidity.
Question 183
A high velocity terminal reheat system differes from a low velocity system
in the:D
1. supply air temperature.
2. supply air velocity.
3. size of supply air duct.
4. lack of a therminal reheat box.
5. increase fan size.
A) 1, 3 and 5 ONLY
B) 2, 3, and 4 ONLY
C) 1, 2, and 4 ONLY
D) 2, 3 and 5 ONLY
E) 1 and 2
Question 184
The central air conditioning system with constant air volume supplied to the
conditioned space which can provide both heating and cooling simutaneously
is called a:B
A) constant air volume, terminal reheat low velocity system.
B) multizone system.
C) constant air volume, terminal reheat high velocity system.
D) single zone system.
E) hot and cold deck system.
Question 185
The space thermostat of each zone on a simple multizone system:A
A) regulates the modulating damper of the mixing compartment.
B) controls the hot water temperature to the coil.
C) controls the chilled water temperature to the coil.
D) controls the mixing box.
E) regulates the total make-up air into the system.
Question 186
The air handling system that has its cooling coils and heating colis
arranged in an offset (parallel) pattern is the:B
A) single zone system.
B) multizone system.
C) variable air volume system.
D) single zone system with reheat.
E) unit ventilator.
Question 187
A dual duct air conditioning system is a modified:C
A) single zone, CAV system.
B) multizone, VAV system.
C) multizone, CAV system.
D) single zone, high velocity system.
E) two-zone VAV system.
Question 188
In a dual duct air conditioning system, the capacity of each duct must be
rated at _____ of the total air flow.E?
A) 25%
B) 50%
C) 75%
D) 85%
E) 100%
Question 189
The dual duct air conditioning system:A
A) is suitable for small buildings such as schools.
B) provides variable air volume to each zone.
C) employs acoustic insulation in mixing boxes as a standard feature.
D) maintains a hot deck temperature at 12.5°C year-round.
E) is suitable for a single-zone installation.
To offset the heat gains through a building's exterior shell and from
internal heat sources, an air conditioning system must employ:C
A) a humidifier.
B) a dehumidifier.
C) a cooling source.
D) air recirculation.
E) air filtration.
Question 162
Dehumidification is necessary not only for the comfort of building
occupants, but also to prevent:D
A) shrinkage of the wood in exterior walls.
B) production of static electricity.
C) frost formation in interior walls during winter months.
D) frost formation in exterior walls during winter months.
E) frost-heaving of basement floors during winter months.
Question 163
The application of an air conditioning system depends on the:
1. geographical location.B
2. type of occupancy.
3. local building code.
4. building layout.
5. National Building Code.
A) 1, 2 and 3 ONLY
B) 1, 2 and 4 ONLY
C) 1, 3 and 5 ONLY
D) 1, 2 and 5 ONLY
E) 2, 3 and 4 ONLY
Question 164
When analyzing a building for an air conditioning system, the two most
important considerations include:A
1. Which of the basic requirements must be provide?
2. Which requirements are desirable but not essential?
3. Which system will cost the least?
4. What is the owner's preference?
A) 1 and 2
B) 1 and 3
C) 2 and 3
D) 3 and 4
E) 2 and 5
Question 165
An air handling system located in a single mechanical room that distributes
airconditioned air throughout the building by means of ducts is the
___________ system.A
A) unitary
B) central
C) combined
D) single
E) loop
Question 166
With respect to a central air conditioning system, identify the statement
that is TRUE,C
A) All the controls are in the mechanical room.
B) All the air is conditioned to its final space requirements in the
mechanical room.
C) A supplemental thermostat in each zone may provide for improved zone
temperature control.
D) Conditioned air is always supplied to a single zone.
E) Make-up air is not necessary with modern-day filters.
Question 167
In a combined air conditioning system, the conditioned air supplied from the
mechanical room normally provides:D
A) heating and ventialtion.
B) cooling and humidification.
C) heating and dehumidification.
D) cooling and ventilation.
E) filtration and humidification.
Question 168
The equipment that handles air filtration, air temperature control, air
humidity control, ventilation, and air movement is called a(n):A
A) air handling unit (AHU)
B) air recirc unit (ARU)
C) return air unit (RAU)
D) mixed air unit (MAU)
E) outdoor air unit (OAU)
Question 169
For ventilation, a forced air furnace for a house typically utilizes:A
A) 100% outdoor air.
B) 50% outdoor air and 50% recirculation.
C) a fixed percentage of 10% outdoor air.
D) 100% recirculation air.
E) a variable rate of outdoor air, depending upon time of year.
Question 170
The four (4) possible arrangements of the intake section of an air handling
unit are:D
A) full recirculation, mixed air, exhaust air and supply air.
B) 100% outdoor air, mixed air, exhaust air and fixed percent outdoor air.
C) 100% oudoor air, mixed air fixed percentage outdoor air, and full
recirculation.
D) full recirculation, mixed air, supply air, and fixed percent outdoor air.
Question 171
In air conditioning systems, the type of air intake arrangement in which
"free cooling" is achieved is the:B
A) fixed percentage of outdoor air arrangement.
B) 100% outdoor air arrangement.
C) 100% recirculation arrangement.
D) mixed air arrangement.
E) by-pass air arrangement.
Question 172
In a mixed air system, the outdoor air temperature control uses outdoor air
temperature as a reference to regulate the:A
A) supply air damper and return air damper.
B) supply air damper and mixing air damper.
C) supply air damper, mixing air damper, and relief air damper.
D) mixing air damper and relief air damper.
E) supply air damper only.
Question 173
The outdoor enthalpy control refers to the use of outdoor air enthalpy
content to control ________ air temperature.A
A) return
B) mixed
C) supply
D) exhaust
E) relief air
Question 174
Unitary air conditioning systems are ususally installed for _____________
zone(s).A
A) a single
B) two
C) three
D) four
E) five or more
Question 175
A small air conditioning unit with DX coils, condenser, compressor, fans and
control all located in a closed casing that only provides air friltration,
cooling, ventilation and dehumidfication is called a __________ unit.A
A) packaged
B) rooftop
C) window
D) fan coil
E) central conditioning
Question 176
Specially-designed "process cooling units" used to control the environmental
conditons in a computer room are a variation of:D
A) full recirculation units.
B) unit ventilators.
C) window air conditioners.
D) packaged air conditioners.
E) rooftop air handling units.
Question 177
The unitary air conditioning system installed at the exterior wall of each
room of a building with an adjustable duct connected to outdoors for
provision of minimum outdoor air intake is called a:D
A) fan coil unit.
B) heat pump.
C) packaged unit.
D) unit ventilator.
E) full recirculation unit.
Question 178
Advantages to using a central airconditioning system in a larger building
include:B
1. ease of installation.
2. effective control of noise and vibration.
3. lower space requirements for equipment.
4. minimal cost for ductwork.
5. lower equipment initial capital cost per unit output.
A) 1, 3 and 4 ONLY
B) 2 and 5 ONLY
C) 1, 2 and 4 ONLY
D) 3 and 5 ONLY
Question 179
A basic forced air furnace installed in most residential homes can provide:
1. humidification.B.?
2. fresh air mixing.
3. air filtration.
4. dehumidification.
5. air heating.
A) 1, 2 and 5
B) 2, 3 and 5
C) 3, 4 and 5
D) 1, 2 and 3
Question 180
Which of the following statements for a forced air system used in a
residential house is FALSE?D
A) Can provide humidification.
B) Can provide cooling.
C) Can provide ventilation.
D) Can provide multizone control.
E) Can provide natural gas heating.
Question 181
In a single zone constant air volume system, space conditions are maintained
by adjusting supply air temperature in response to a thermostat located in
the:A
A) room or return air duct.
B) fresh air duct.
C) outdoor space.
D) mixed air duct.
E) supply air duct.
Question 182
By keeping the supply air temperature for a low velocity terminal reheat
system at 12.5°C year-round, this system:C
A) is low in energy consumption.
B) does not require cooling.
C) is high in energy consumption.
D) can not be applied to multizone temperature control.
E) can effectively regulate humidity.
Question 183
A high velocity terminal reheat system differes from a low velocity system
in the:D
1. supply air temperature.
2. supply air velocity.
3. size of supply air duct.
4. lack of a therminal reheat box.
5. increase fan size.
A) 1, 3 and 5 ONLY
B) 2, 3, and 4 ONLY
C) 1, 2, and 4 ONLY
D) 2, 3 and 5 ONLY
E) 1 and 2
Question 184
The central air conditioning system with constant air volume supplied to the
conditioned space which can provide both heating and cooling simutaneously
is called a:B
A) constant air volume, terminal reheat low velocity system.
B) multizone system.
C) constant air volume, terminal reheat high velocity system.
D) single zone system.
E) hot and cold deck system.
Question 185
The space thermostat of each zone on a simple multizone system:A
A) regulates the modulating damper of the mixing compartment.
B) controls the hot water temperature to the coil.
C) controls the chilled water temperature to the coil.
D) controls the mixing box.
E) regulates the total make-up air into the system.
Question 186
The air handling system that has its cooling coils and heating colis
arranged in an offset (parallel) pattern is the:B
A) single zone system.
B) multizone system.
C) variable air volume system.
D) single zone system with reheat.
E) unit ventilator.
Question 187
A dual duct air conditioning system is a modified:C
A) single zone, CAV system.
B) multizone, VAV system.
C) multizone, CAV system.
D) single zone, high velocity system.
E) two-zone VAV system.
Question 188
In a dual duct air conditioning system, the capacity of each duct must be
rated at _____ of the total air flow.E?
A) 25%
B) 50%
C) 75%
D) 85%
E) 100%
Question 189
The dual duct air conditioning system:A
A) is suitable for small buildings such as schools.
B) provides variable air volume to each zone.
C) employs acoustic insulation in mixing boxes as a standard feature.
D) maintains a hot deck temperature at 12.5°C year-round.
E) is suitable for a single-zone installation.
No comments:
Post a Comment