MINNESOTA SPECIAL ENGINEER BOILER LICENSE
PRACTICE EXAM QUESTIONS 2026-
2027|400+Qs&As|ALREADY GRADED A+|BRAND
NEW
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?
ANSWER:->>>10 Sq. Ft. Heating Surface
What is meant by the term "Low Pressure Boiler"?
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)?
ANSWER:->>>High and Low pressure boilers not to exceed a total of 50 boiler
horsepower, or a shift engineer in a 100 horsepower plant.
Special Engineer may serve as an apprentice of what size water/liquid or
steam/vapor boiler?
,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?
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?
ANSWER:->>>Safety valve and/or an ASME approved safety relief valve.
A Tri indicator could be found on a:
ANSWER:->>>Hot water boiler
A tri indicator would inform the boiler operator of what?
ANSWER:->>>The TEMPERATURE of the water, the PRESSURE of the water in
PSIG, and the ALTITUDE of water in feet.
What is the destructive force in a steam or hot water boiler explosion?
ANSWER:->>>The instant release of energy stored in the water as heat.
,An ASME approved safety relieve calve used on a hot water boiler is tested at
the factory on what?
ANSWER:->>>Steam first then hot water.
Some of the things you could find on a steam boiler (or hot water boiler) are
what?
ANSWER:->>>Low water cut off, safety valve or safety relief valve, pressure
gauge.
What devices would only be found on a steam boiler?
ANSWER:->>>Steam pressure gauge, tricocks, Pressuretrols
An expansion tank or compression tank would be used in what?
ANSWER:->>>Hot water boiler
What is the purpose of the expansion tank?
ANSWER:->>>To provide for expansion and contraction of the water volume
as its temperature varies.
, On a hot water boiler, what is the purpose of the vent valve?
ANSWER:->>>To make sure there is water inside the boiler and to vent any
trapped air.
If the safety valve or ASME safety relief valve leaks you would do what?
ANSWER:->>>Have the valve repaired or replaced.
Tri cocks or gauge cocks are sued on a steam boiler to indicate?
ANSWER:->>>The true water level inside the boiler.
On a steam or hot water boiler, the safety valve or safety relief valve could be
tested by?
ANSWER:->>>When the boiler is running lifting the lever on the valve or
raising the pressure until they operate.
Before starting a steam or hot water boiler you should check for what?
ANSWER:->>>Water in the boiler.
PRACTICE EXAM QUESTIONS 2026-
2027|400+Qs&As|ALREADY GRADED A+|BRAND
NEW
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?
ANSWER:->>>10 Sq. Ft. Heating Surface
What is meant by the term "Low Pressure Boiler"?
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)?
ANSWER:->>>High and Low pressure boilers not to exceed a total of 50 boiler
horsepower, or a shift engineer in a 100 horsepower plant.
Special Engineer may serve as an apprentice of what size water/liquid or
steam/vapor boiler?
,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?
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?
ANSWER:->>>Safety valve and/or an ASME approved safety relief valve.
A Tri indicator could be found on a:
ANSWER:->>>Hot water boiler
A tri indicator would inform the boiler operator of what?
ANSWER:->>>The TEMPERATURE of the water, the PRESSURE of the water in
PSIG, and the ALTITUDE of water in feet.
What is the destructive force in a steam or hot water boiler explosion?
ANSWER:->>>The instant release of energy stored in the water as heat.
,An ASME approved safety relieve calve used on a hot water boiler is tested at
the factory on what?
ANSWER:->>>Steam first then hot water.
Some of the things you could find on a steam boiler (or hot water boiler) are
what?
ANSWER:->>>Low water cut off, safety valve or safety relief valve, pressure
gauge.
What devices would only be found on a steam boiler?
ANSWER:->>>Steam pressure gauge, tricocks, Pressuretrols
An expansion tank or compression tank would be used in what?
ANSWER:->>>Hot water boiler
What is the purpose of the expansion tank?
ANSWER:->>>To provide for expansion and contraction of the water volume
as its temperature varies.
, On a hot water boiler, what is the purpose of the vent valve?
ANSWER:->>>To make sure there is water inside the boiler and to vent any
trapped air.
If the safety valve or ASME safety relief valve leaks you would do what?
ANSWER:->>>Have the valve repaired or replaced.
Tri cocks or gauge cocks are sued on a steam boiler to indicate?
ANSWER:->>>The true water level inside the boiler.
On a steam or hot water boiler, the safety valve or safety relief valve could be
tested by?
ANSWER:->>>When the boiler is running lifting the lever on the valve or
raising the pressure until they operate.
Before starting a steam or hot water boiler you should check for what?
ANSWER:->>>Water in the boiler.
