MINNESOTA SPECIAL ENGINEER BOILER CORE EXAMS
2025/2026 QUESTIONS WITH ANSWERS TAGGED A+
✔✔An example of the transfer of heat by radiation is ____________ - ✔✔the heating
effect of the sun on the earth
✔✔The document governing boiler fittings and valves is the ____________ Code. -
✔✔ASME
✔✔The best method of testing a low-water fuel cutoff (LWCO) is to ____________ -
✔✔lower the water level in the boiler to the level where the burner should cut out
✔✔Rules governing the construction of power boilers are set out in ____________ -
✔✔ASME Code Section I
✔✔A way to determine if a safety valve on a boiler has sufficient capacity is to
____________ - ✔✔perform an accumulation test
✔✔An example of nondestructive test on a boiler is a(n) ____________ test - ✔✔x-ray
✔✔The material used most frequently for piping is ____________ - ✔✔low carbon steel
✔✔In a natural draft furnace, the amount of draft is affected by the ____________ -
✔✔height of the stack
✔✔A check valve is a valve that ____________ - ✔✔Allows flow in one direction only
✔✔Expansion bends or joints are installed in piping systems to ____________ -
✔✔allow for expansion and contraction of the piping without causing damage
✔✔The main purpose of installing insulation on steam system piping is to
____________ - ✔✔prevent heat loss
✔✔The purpose of a steam trap is to ____________ - ✔✔remove air and condensate
from steam lines
✔✔Boiler stays ____________ - ✔✔are used to support tube sheets in a boiler
✔✔Handhole and manhole openings ____________ - ✔✔Permit inspection, cleaning
and repairs
✔✔A low-water fuel cut (LWCO) is used on a boiler to prevent ____________ -
✔✔damage to the boiler from overheating
, ✔✔The boiler heating surface ____________ - ✔✔can be used to determine the boiler
capacity
✔✔With regard to steam boilers, the letters "HRT" mean ____________ - ✔✔horizontal
return tubular
✔✔When the hot combustion gases travel through boiler tubes which
are surrounded by the boiler water, the boiler is called a - ✔✔firetube
✔✔The two general designs of electric boilers are the ____________ types. -
✔✔electrode and resistance
✔✔Continuous blowdown systems are used in boilers ____________ - ✔✔to help
control the dissolved solids concentration
✔✔A watertube boiler is a boiler that has ____________ - ✔✔water on the inside of the
tubes and hot gas on the outside of the tubes
✔✔The low-water fuel cutoff (LWCO) is a device fitted to the boiler to shut off the
____________ - ✔✔fuel supply to the burners when water level in the boiler is low
✔✔The purpose of the spring in a safety valve is to ____________ - ✔✔force the valve
to open at the correct pressure
✔✔The safety valve test lever must not be used unless ____________ - ✔✔another
licensed engineer is present
✔✔A siphon tube is necessary to ____________ - ✔✔prevent water from entering a
steam gauge
✔✔A test connection between the siphon tube and the boiler pressure gauge is needed
to ____________ - ✔✔test steam temperature at the pressure shown on the gauge
✔✔Try cocks on a water column are used to ____________ - ✔✔check the water level
in the boiler
✔✔A ____________ blowdown is performed to remove sludge from a boiler -
✔✔bottom
✔✔Boiler baffles are used ____________ - ✔✔in every boiler furnace
2025/2026 QUESTIONS WITH ANSWERS TAGGED A+
✔✔An example of the transfer of heat by radiation is ____________ - ✔✔the heating
effect of the sun on the earth
✔✔The document governing boiler fittings and valves is the ____________ Code. -
✔✔ASME
✔✔The best method of testing a low-water fuel cutoff (LWCO) is to ____________ -
✔✔lower the water level in the boiler to the level where the burner should cut out
✔✔Rules governing the construction of power boilers are set out in ____________ -
✔✔ASME Code Section I
✔✔A way to determine if a safety valve on a boiler has sufficient capacity is to
____________ - ✔✔perform an accumulation test
✔✔An example of nondestructive test on a boiler is a(n) ____________ test - ✔✔x-ray
✔✔The material used most frequently for piping is ____________ - ✔✔low carbon steel
✔✔In a natural draft furnace, the amount of draft is affected by the ____________ -
✔✔height of the stack
✔✔A check valve is a valve that ____________ - ✔✔Allows flow in one direction only
✔✔Expansion bends or joints are installed in piping systems to ____________ -
✔✔allow for expansion and contraction of the piping without causing damage
✔✔The main purpose of installing insulation on steam system piping is to
____________ - ✔✔prevent heat loss
✔✔The purpose of a steam trap is to ____________ - ✔✔remove air and condensate
from steam lines
✔✔Boiler stays ____________ - ✔✔are used to support tube sheets in a boiler
✔✔Handhole and manhole openings ____________ - ✔✔Permit inspection, cleaning
and repairs
✔✔A low-water fuel cut (LWCO) is used on a boiler to prevent ____________ -
✔✔damage to the boiler from overheating
, ✔✔The boiler heating surface ____________ - ✔✔can be used to determine the boiler
capacity
✔✔With regard to steam boilers, the letters "HRT" mean ____________ - ✔✔horizontal
return tubular
✔✔When the hot combustion gases travel through boiler tubes which
are surrounded by the boiler water, the boiler is called a - ✔✔firetube
✔✔The two general designs of electric boilers are the ____________ types. -
✔✔electrode and resistance
✔✔Continuous blowdown systems are used in boilers ____________ - ✔✔to help
control the dissolved solids concentration
✔✔A watertube boiler is a boiler that has ____________ - ✔✔water on the inside of the
tubes and hot gas on the outside of the tubes
✔✔The low-water fuel cutoff (LWCO) is a device fitted to the boiler to shut off the
____________ - ✔✔fuel supply to the burners when water level in the boiler is low
✔✔The purpose of the spring in a safety valve is to ____________ - ✔✔force the valve
to open at the correct pressure
✔✔The safety valve test lever must not be used unless ____________ - ✔✔another
licensed engineer is present
✔✔A siphon tube is necessary to ____________ - ✔✔prevent water from entering a
steam gauge
✔✔A test connection between the siphon tube and the boiler pressure gauge is needed
to ____________ - ✔✔test steam temperature at the pressure shown on the gauge
✔✔Try cocks on a water column are used to ____________ - ✔✔check the water level
in the boiler
✔✔A ____________ blowdown is performed to remove sludge from a boiler -
✔✔bottom
✔✔Boiler baffles are used ____________ - ✔✔in every boiler furnace
