MN Boiler License Questions
and Answers Rated 100%
Correct
an answer - correct answer ✔✔a question
c) turbulence, temperature, time 3T's - correct answer ✔✔what are the conditions necessary
for good combustion?
a) low sulfur content
b) Thermal, thermocoupler, tubular
c) turbulence, temperature, time 3T's
a) Necessary to burn the combustible gases - correct answer ✔✔why is secondary air 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
b) decreases - correct answer ✔✔when pressure increases on steam from a given amount of
water what happens to its volume and latent heat?
a) increases
b) decreases
c) remains the same
,a) increases - correct answer ✔✔when pressure increases on steam from a given amount of
water what happens to its temperature?
a) increases
b) decreases
c) remains the same
c) more "over the fire" air is needed - correct answer ✔✔when carbon monoxide (co) 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
c) air supplied above that theoretically required - correct answer ✔✔excess air is an expression
that refers to:
a) overabundance of air
b) theoretical amount of air
c) air supplied above that theoretically required
a) 12% - correct answer ✔✔a good percentage of carbon dioxide when burning oil is:
a) 12%
b) 8 %
c) 10%
b) difference in pressure between atmosphere and furnace or firebox - correct answer ✔✔what
is draft on a boiler in operation?
a) Flow of gases through boiler
,b) difference in pressure between atmosphere and furnace or firebox
c) difference between atmospheric pressure and breeching
a) oil (18000 - 19500 BTU)
(coal has (6900 - 12910 BTU)) - correct answer ✔✔which has greater heating value per pound?
a) oil
b) coal
c) get proper atomization - correct answer ✔✔heavy oil must be heated before entering the
burner to:
a) increase carbon content
b) decreased sulfur content
c) get proper atomization
c) change an operation, causing heat loss, can be detected - correct answer ✔✔why should a
daily log be kept of flue gas temperature?
a) Valuable information in case of explosion
b) superintendent files them
c) change an operation, causing heat loss, can be detected
b) 143.6 - correct answer ✔✔find SWP of a boiler 72 inches in diameter, thickness of one-half
inch, tensile strength of 55,000 pounds, quadruple riveted butt and strap joint (.94) factor of
safety 5:
a) 14.3
b) 143.6
c) 1436
, c) 1.07 - correct answer ✔✔the total heat of steam is 1,188 BTUs, and feed water temperature
is 182 degrees Fahrenheit. What is the factor of evaporation?
a) 107
b) 10.7
c) 1.07
c) effects ease with which it can be handled - correct answer ✔✔why would viscosity be
important in fuel oil?
a) more heat is recovered in water
b) has more volatile hydrocarbons
c) affects ease with which it can be handled
b) loss of efficiency - correct answer ✔✔why is too much air objectionable?
a) Cost too high
b) loss of efficiency
c) corrosive effect
a) flue gas analyzer - correct answer ✔✔what is a fyrite used for?
a) flue gas analyzer
b) combustion programmer
c) water analysis
c) atmospheric pressure + gauge pressure - correct answer ✔✔absolute pressure is (ABS):
a) atmospheric pressure - gauge pressure
b) gauge pressure minus atmospheric pressure
c) atmospheric pressure + gauge pressure
and Answers Rated 100%
Correct
an answer - correct answer ✔✔a question
c) turbulence, temperature, time 3T's - correct answer ✔✔what are the conditions necessary
for good combustion?
a) low sulfur content
b) Thermal, thermocoupler, tubular
c) turbulence, temperature, time 3T's
a) Necessary to burn the combustible gases - correct answer ✔✔why is secondary air 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
b) decreases - correct answer ✔✔when pressure increases on steam from a given amount of
water what happens to its volume and latent heat?
a) increases
b) decreases
c) remains the same
,a) increases - correct answer ✔✔when pressure increases on steam from a given amount of
water what happens to its temperature?
a) increases
b) decreases
c) remains the same
c) more "over the fire" air is needed - correct answer ✔✔when carbon monoxide (co) 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
c) air supplied above that theoretically required - correct answer ✔✔excess air is an expression
that refers to:
a) overabundance of air
b) theoretical amount of air
c) air supplied above that theoretically required
a) 12% - correct answer ✔✔a good percentage of carbon dioxide when burning oil is:
a) 12%
b) 8 %
c) 10%
b) difference in pressure between atmosphere and furnace or firebox - correct answer ✔✔what
is draft on a boiler in operation?
a) Flow of gases through boiler
,b) difference in pressure between atmosphere and furnace or firebox
c) difference between atmospheric pressure and breeching
a) oil (18000 - 19500 BTU)
(coal has (6900 - 12910 BTU)) - correct answer ✔✔which has greater heating value per pound?
a) oil
b) coal
c) get proper atomization - correct answer ✔✔heavy oil must be heated before entering the
burner to:
a) increase carbon content
b) decreased sulfur content
c) get proper atomization
c) change an operation, causing heat loss, can be detected - correct answer ✔✔why should a
daily log be kept of flue gas temperature?
a) Valuable information in case of explosion
b) superintendent files them
c) change an operation, causing heat loss, can be detected
b) 143.6 - correct answer ✔✔find SWP of a boiler 72 inches in diameter, thickness of one-half
inch, tensile strength of 55,000 pounds, quadruple riveted butt and strap joint (.94) factor of
safety 5:
a) 14.3
b) 143.6
c) 1436
, c) 1.07 - correct answer ✔✔the total heat of steam is 1,188 BTUs, and feed water temperature
is 182 degrees Fahrenheit. What is the factor of evaporation?
a) 107
b) 10.7
c) 1.07
c) effects ease with which it can be handled - correct answer ✔✔why would viscosity be
important in fuel oil?
a) more heat is recovered in water
b) has more volatile hydrocarbons
c) affects ease with which it can be handled
b) loss of efficiency - correct answer ✔✔why is too much air objectionable?
a) Cost too high
b) loss of efficiency
c) corrosive effect
a) flue gas analyzer - correct answer ✔✔what is a fyrite used for?
a) flue gas analyzer
b) combustion programmer
c) water analysis
c) atmospheric pressure + gauge pressure - correct answer ✔✔absolute pressure is (ABS):
a) atmospheric pressure - gauge pressure
b) gauge pressure minus atmospheric pressure
c) atmospheric pressure + gauge pressure
