MN Boiler License Questions
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VERSIONS OF THE EXAM WITH
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What element in fuel is required for combustion? -
answerCarbon
How many hours is considered one year of experience? -
answer2000
How much experience is required to apply for the 2nd class A or
B exam? - answer2000 hrs
How much experience is required to take the Chief A or B
exam? - answer10,000 hrs
When taking the 1st class A or B, how much experience is
required? - answer6000 hrs
,Following a failure of the Boiler Operator exam, how much time
must elapse to retake the exam? - answer30 days
In the state of Minnesota, how many BTUs are in one boiler
horsepower? - answer67,000
Boilers and boiler fittings used in the state of Minnesota must be
constructed to what code? - answerASME
In what ways can heat be transferred? - answerConduction,
convection, radiation
What is the first sequence in the automatic burner control
sequence? - answerPurging
Air mixed with the fuel at/or in the burner is called what? -
answerPrimary air
What is the internal resistance to the flow of fuel oil? -
answerViscosity
What system removes air from a hot water boiler system? -
answerAir control
What must be done to each safety valve left attached to the
boiler when a hydrostatic test exceeds MAWP? - answerIts
valve disc must be held to its seat by means of testing clamp or
gag
Why is a safety valve sealed? - answerTo prevent tampering
with pressure and capacity
,What should be done if water in the gauge glass is not visible
because of failure of the feed water supply? - answerShut off
fuel to the burner and secure the boiler
What two scales does a pressure control have? - answerCut in
pressure
Differential pressure
What is the minimum size bottom blowdown line used on a
miniature boiler? - answer1/2"
What is the minimum size drain required on a water column? -
answer3/4"
What conditions are necessary to cause a furnace explosion? -
answerAccumulation of unburned fuel, oxygen, and an ignition
source
When can a high pressure safety valve be used on the same
boiler for low pressure? - answerNever
What temperature must a fuel be heated to for it to burn? -
answerIts ignition temperature
Why is a pigtail or siphon required in steam pressure gauge
lines? - answerTo protect the gauge from high temperatures
Why are bottom blowdown lines installed at the lowest point of
the waterside of steam boilers? - answerTo remove sludge and
sediment
, What happens when the radiator steam trap becomes water
logged? - answerThe radiator will not heat the room properly
What chemical is used as an oxygen scavenger? -
answerSodium sulfite
What type of valve is permitted to isolate a steam gauge? -
answerA tee or lever handle valve
What is used to measure draft? - answerManometer
When adding water to a hot water heating system, the pressure
gauge rising quickly is an indication of what? - answerA water-
logged expansion tank
What is the maximum temperature to be carried on a low
pressure, hot water boiler? - answer250F
How can you tell the maximum allowable working pressure on
any boiler? - answerLook at the setting of the safety valve or
safety relief valve
For the purpose of rating boiler horsepower for engineer license
classifications only, how many square feet of heating surface
area shall be considered equivalent to one boiler horsepower for
a conventional boiler? - answer10 sq ft
What is recommended for boilers that will be out of service a an
extended period of time with the possibility of freezing? -
answerDry layup
TESTBANK CURRENTLY TESTING
VERSIONS OF THE EXAM WITH
QUESTIONS AND CORRECT
DETAILED ANSWERS/EXPERT
VERIFIED FOR GUARANTEED
PASS!/LATEST UPDATE
What element in fuel is required for combustion? -
answerCarbon
How many hours is considered one year of experience? -
answer2000
How much experience is required to apply for the 2nd class A or
B exam? - answer2000 hrs
How much experience is required to take the Chief A or B
exam? - answer10,000 hrs
When taking the 1st class A or B, how much experience is
required? - answer6000 hrs
,Following a failure of the Boiler Operator exam, how much time
must elapse to retake the exam? - answer30 days
In the state of Minnesota, how many BTUs are in one boiler
horsepower? - answer67,000
Boilers and boiler fittings used in the state of Minnesota must be
constructed to what code? - answerASME
In what ways can heat be transferred? - answerConduction,
convection, radiation
What is the first sequence in the automatic burner control
sequence? - answerPurging
Air mixed with the fuel at/or in the burner is called what? -
answerPrimary air
What is the internal resistance to the flow of fuel oil? -
answerViscosity
What system removes air from a hot water boiler system? -
answerAir control
What must be done to each safety valve left attached to the
boiler when a hydrostatic test exceeds MAWP? - answerIts
valve disc must be held to its seat by means of testing clamp or
gag
Why is a safety valve sealed? - answerTo prevent tampering
with pressure and capacity
,What should be done if water in the gauge glass is not visible
because of failure of the feed water supply? - answerShut off
fuel to the burner and secure the boiler
What two scales does a pressure control have? - answerCut in
pressure
Differential pressure
What is the minimum size bottom blowdown line used on a
miniature boiler? - answer1/2"
What is the minimum size drain required on a water column? -
answer3/4"
What conditions are necessary to cause a furnace explosion? -
answerAccumulation of unburned fuel, oxygen, and an ignition
source
When can a high pressure safety valve be used on the same
boiler for low pressure? - answerNever
What temperature must a fuel be heated to for it to burn? -
answerIts ignition temperature
Why is a pigtail or siphon required in steam pressure gauge
lines? - answerTo protect the gauge from high temperatures
Why are bottom blowdown lines installed at the lowest point of
the waterside of steam boilers? - answerTo remove sludge and
sediment
, What happens when the radiator steam trap becomes water
logged? - answerThe radiator will not heat the room properly
What chemical is used as an oxygen scavenger? -
answerSodium sulfite
What type of valve is permitted to isolate a steam gauge? -
answerA tee or lever handle valve
What is used to measure draft? - answerManometer
When adding water to a hot water heating system, the pressure
gauge rising quickly is an indication of what? - answerA water-
logged expansion tank
What is the maximum temperature to be carried on a low
pressure, hot water boiler? - answer250F
How can you tell the maximum allowable working pressure on
any boiler? - answerLook at the setting of the safety valve or
safety relief valve
For the purpose of rating boiler horsepower for engineer license
classifications only, how many square feet of heating surface
area shall be considered equivalent to one boiler horsepower for
a conventional boiler? - answer10 sq ft
What is recommended for boilers that will be out of service a an
extended period of time with the possibility of freezing? -
answerDry layup
