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MINNESOTA SPECIAL ENGINEER
BOILER LICENSE PRACTICE EXAM
QUESTIONS WITH CORRECT
ANSWERS LATEST UPDATE 2026
For the purpose of rating boiler horsepower for an Engineers
License only, how many square feet of boiler surface shall be
equivalent to one boiler horsepower on a boiler? - correct answer-
10 Sq. Ft. Heating Surface
What is meant by the term "Low Pressure Boiler"? - correct
answer-Boilers operating at a steam or other vapor pressure of
15psig or less, or a hot water or other liquid boiler in which the
pressure does not exceed 160 psig or a temperature of 250
degrees F.
A person holding a current State of Minnesota Special Engineers
License could be in charge of, or a shift engineer in what size
plant(s)? - correct answer-High and Low pressure boilers not to
exceed a total of 50 boiler horsepower, or a shift engineer in a
100 horsepower plant.
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Special Engineer may serve as an apprentice of what size
water/liquid or steam/vapor boiler? - correct answer-In any plant
regardless of size under the direct supervision of a properly
licensed engineer.
The purpose of low water cut out on a steam or hot water boiler is
to what? - correct answer-Shut off the burner when a low water
condition exists.
The valve or valves that must relieve all excess pressure on a
steam or hot water boiler are what? - correct answer-Safety valve
and/or an ASME approved safety relief valve.
A Tri indicator could be found on a: - correct answer-Hot water
boiler
A tri indicator would inform the boiler operator of what? - correct
answer-The TEMPERATURE of the water, the PRESSURE of the
water in PSIG, and the ALTITUDE of water in feet.
MINNESOTA SPECIAL ENGINEER
BOILER LICENSE PRACTICE EXAM
QUESTIONS WITH CORRECT
ANSWERS LATEST UPDATE 2026
For the purpose of rating boiler horsepower for an Engineers
License only, how many square feet of boiler surface shall be
equivalent to one boiler horsepower on a boiler? - correct answer-
10 Sq. Ft. Heating Surface
What is meant by the term "Low Pressure Boiler"? - correct
answer-Boilers operating at a steam or other vapor pressure of
15psig or less, or a hot water or other liquid boiler in which the
pressure does not exceed 160 psig or a temperature of 250
degrees F.
A person holding a current State of Minnesota Special Engineers
License could be in charge of, or a shift engineer in what size
plant(s)? - correct answer-High and Low pressure boilers not to
exceed a total of 50 boiler horsepower, or a shift engineer in a
100 horsepower plant.
, Page | 2
Special Engineer may serve as an apprentice of what size
water/liquid or steam/vapor boiler? - correct answer-In any plant
regardless of size under the direct supervision of a properly
licensed engineer.
The purpose of low water cut out on a steam or hot water boiler is
to what? - correct answer-Shut off the burner when a low water
condition exists.
The valve or valves that must relieve all excess pressure on a
steam or hot water boiler are what? - correct answer-Safety valve
and/or an ASME approved safety relief valve.
A Tri indicator could be found on a: - correct answer-Hot water
boiler
A tri indicator would inform the boiler operator of what? - correct
answer-The TEMPERATURE of the water, the PRESSURE of the
water in PSIG, and the ALTITUDE of water in feet.
