ABSA 4b UPDATED ACTUAL Questions and CORRECT Answers
Warm Air Heating System Equipment
In a warm air heating system the cold air B
return registers
are located
a) in exterior walls
b) in interior locations
c) under windows
d) in floors
e) in ceilings
The major disadvantage of an electric A
resistance coil furnace
for warm air heating is
a) the high cost of electricity
b) the danger from electric shock
c) the high cost of maintenance
d) the large size of the furnace
e) the location of electrical wiring
Lowboy furnaces are just over E
a) 1.0 m in height
b) 0.8 m in height
c) 1.4 m in height
d) 1.6 m in height
e) 1.2 m in height
,The advantage of having duct furnaces C
instead of a large
central furnace is
a) less initial cost
b) easier installation
c) better control of heat in each zone of
the building
d) that they require less space
e) lower maintenance costs
The power supply for an electric resistance C
coil furnace is
a) 60 V
b) 120 V
c) 240 V
d) 220 V
e) 480 V
In a fin-coil heat exchanger the primary A
source of heat for
the exchanger is
a) steam or hot water
b) gas
c) oil
d) solar
e) radiant
A type of directly fired space heater is D
a) a unit heater
b) a floor furnace
c) a wall furnace
d) all of the above
e) none of the above
High efficiency furnaces and heaters range B
in annual fuel
utilization efficiency (AFUE) from
a) 94 - 98%
b) 80 - 95%
c) 70 - 75%
d) 60 - 70%
e) 50 - 60%
In high efficiency furnaces if the B
temperature of the flue
gas drops below 65 degrees C the
a) flue gas will condense
b) water vapour will condense
c) furnace burner will shut down
d) furnace burner will start up
e) furnace vent will close
, In a pulse combination furnace the stated A
efficiency is
a) 94 - 98%
b) 80 - 95%
c) 70 - 75%
d) 60 - 70%
e) 50 - 60%
Warm Air Furnace Components and
Maintenance
Heat exchangers in gas fired furnaces are D
made of
a) brass
b) copper
c) aluminum
d) steel
e) cast iron
Air filters can be divided into two groups E
a) mechanical and rotating drum
b) electronic and steam
c) dry and wet
d) steam and rotating drum
e) mechanical and electronic
Electronic filters will remove B
a) all particles from the air
b) fine particles from the air
c) odour producing gases from the air
d) smoke from the air
e) all of the above
The perimeter loop system of furnace C
ducting is ideal for a
building with
a) no insulation in the walls
b) concrete walls
c) no basement
d) low head room in the basement
e) no cold air returns
Which of the following is a type of outlet in E
a warm air
heating system?
a) a grill
b) a register
c) a ceiling diffuser
d) a perforated panel
e) all of the above
Supply outlets should always be located D
a) in walls
b) in floors
c) in ceilings
d) to best prevent cold drafts
e) in baseboards
Warm Air Heating System Equipment
In a warm air heating system the cold air B
return registers
are located
a) in exterior walls
b) in interior locations
c) under windows
d) in floors
e) in ceilings
The major disadvantage of an electric A
resistance coil furnace
for warm air heating is
a) the high cost of electricity
b) the danger from electric shock
c) the high cost of maintenance
d) the large size of the furnace
e) the location of electrical wiring
Lowboy furnaces are just over E
a) 1.0 m in height
b) 0.8 m in height
c) 1.4 m in height
d) 1.6 m in height
e) 1.2 m in height
,The advantage of having duct furnaces C
instead of a large
central furnace is
a) less initial cost
b) easier installation
c) better control of heat in each zone of
the building
d) that they require less space
e) lower maintenance costs
The power supply for an electric resistance C
coil furnace is
a) 60 V
b) 120 V
c) 240 V
d) 220 V
e) 480 V
In a fin-coil heat exchanger the primary A
source of heat for
the exchanger is
a) steam or hot water
b) gas
c) oil
d) solar
e) radiant
A type of directly fired space heater is D
a) a unit heater
b) a floor furnace
c) a wall furnace
d) all of the above
e) none of the above
High efficiency furnaces and heaters range B
in annual fuel
utilization efficiency (AFUE) from
a) 94 - 98%
b) 80 - 95%
c) 70 - 75%
d) 60 - 70%
e) 50 - 60%
In high efficiency furnaces if the B
temperature of the flue
gas drops below 65 degrees C the
a) flue gas will condense
b) water vapour will condense
c) furnace burner will shut down
d) furnace burner will start up
e) furnace vent will close
, In a pulse combination furnace the stated A
efficiency is
a) 94 - 98%
b) 80 - 95%
c) 70 - 75%
d) 60 - 70%
e) 50 - 60%
Warm Air Furnace Components and
Maintenance
Heat exchangers in gas fired furnaces are D
made of
a) brass
b) copper
c) aluminum
d) steel
e) cast iron
Air filters can be divided into two groups E
a) mechanical and rotating drum
b) electronic and steam
c) dry and wet
d) steam and rotating drum
e) mechanical and electronic
Electronic filters will remove B
a) all particles from the air
b) fine particles from the air
c) odour producing gases from the air
d) smoke from the air
e) all of the above
The perimeter loop system of furnace C
ducting is ideal for a
building with
a) no insulation in the walls
b) concrete walls
c) no basement
d) low head room in the basement
e) no cold air returns
Which of the following is a type of outlet in E
a warm air
heating system?
a) a grill
b) a register
c) a ceiling diffuser
d) a perforated panel
e) all of the above
Supply outlets should always be located D
a) in walls
b) in floors
c) in ceilings
d) to best prevent cold drafts
e) in baseboards
