MN Boiler License Questions / Actual Exam
Questions & Correct, Certified Solutions / 2025 /
2026.
Terms in this set (258)
a question an answer
what are the conditions c) turbulence, temperature, time 3T's
necessary for good
combustion?
a) low sulfur content
b) Thermal,
thermocoupler, tubular
c) turbulence,
temperature, time 3T's
why is secondary air a) Necessary to burn the combustible gases
necessary in hand fired
boilers?
a) Necessary to burn the
combustible gases
b) if primary air should fail
c) used only if sulfur
content is high
when pressure increases b) decreases
on steam from a given
amount of water what
happens to its volume and
latent heat?
a) increases
b) decreases
c) remains the same
,when pressure increases a) increases
on steam from a given
amount of water what
happens to its
temperature? a) increases
b) decreases
c) remains the same
when carbon monoxide (co) c) more "over the fire" air is needed
is formed and carbon
dioxide (co2) is very high
what does it generally
signify?
a) More "under the fire
air"is needed
b) less "under the fire
air"is required
c) more "over the fire"
air is
needed
d) less "over the fire" is
needed less
excess air is an expression c) air supplied above that theoretically required
that refers to:
a) overabundance of air
b) theoretical amount
ofair
c) air supplied above
thattheoretically required
a good percentage of a) 12%
carbon dioxide when
burning oil is: a) 12%
b) 8 %
c) 10%
,what is draft on a boiler in b) difference in pressure between atmosphere and furnace or
operation? firebox
a) Flow of gases
throughboiler
b) difference in
pressurebetween
atmosphere and furnace or
firebox
c) difference
betweenatmospheric
pressure and breeching
which has greater heating a) oil (18000 - 19500 BTU) (coal
value per pound? has (6900 - 12910 BTU))
a) oil
b) coal
heavy oil must be heated c) get proper atomization
before entering the burner
to:
a) increase
carboncontent
b) decreased
sulfurcontent
c) get proper
atomization
why should a daily log be c) change an operation, causing heat loss, can be detected
kept of flue gas
temperature?
a) Valuable information
incase of explosion
b) superintendent
filesthem
c) change an
operation,causing heat loss,
can be detected
,
Questions & Correct, Certified Solutions / 2025 /
2026.
Terms in this set (258)
a question an answer
what are the conditions c) turbulence, temperature, time 3T's
necessary for good
combustion?
a) low sulfur content
b) Thermal,
thermocoupler, tubular
c) turbulence,
temperature, time 3T's
why is secondary air a) Necessary to burn the combustible gases
necessary in hand fired
boilers?
a) Necessary to burn the
combustible gases
b) if primary air should fail
c) used only if sulfur
content is high
when pressure increases b) decreases
on steam from a given
amount of water what
happens to its volume and
latent heat?
a) increases
b) decreases
c) remains the same
,when pressure increases a) increases
on steam from a given
amount of water what
happens to its
temperature? a) increases
b) decreases
c) remains the same
when carbon monoxide (co) c) more "over the fire" air is needed
is formed and carbon
dioxide (co2) is very high
what does it generally
signify?
a) More "under the fire
air"is needed
b) less "under the fire
air"is required
c) more "over the fire"
air is
needed
d) less "over the fire" is
needed less
excess air is an expression c) air supplied above that theoretically required
that refers to:
a) overabundance of air
b) theoretical amount
ofair
c) air supplied above
thattheoretically required
a good percentage of a) 12%
carbon dioxide when
burning oil is: a) 12%
b) 8 %
c) 10%
,what is draft on a boiler in b) difference in pressure between atmosphere and furnace or
operation? firebox
a) Flow of gases
throughboiler
b) difference in
pressurebetween
atmosphere and furnace or
firebox
c) difference
betweenatmospheric
pressure and breeching
which has greater heating a) oil (18000 - 19500 BTU) (coal
value per pound? has (6900 - 12910 BTU))
a) oil
b) coal
heavy oil must be heated c) get proper atomization
before entering the burner
to:
a) increase
carboncontent
b) decreased
sulfurcontent
c) get proper
atomization
why should a daily log be c) change an operation, causing heat loss, can be detected
kept of flue gas
temperature?
a) Valuable information
incase of explosion
b) superintendent
filesthem
c) change an
operation,causing heat loss,
can be detected
,
