MINNESOTA SPECIAL ENGINEER BOILER
LICENSE PRACTICE EXAM QUESTIONS
2026 EDITION COMPLETE PRACTICE
QUESTIONS AND CORRECT ANSWERS
WITH DETAILED EXPLANATIONS
COMPREHENSIVE BOILER LICENSE STUDY
GUIDE
Give an example of cold water start for a hot water boiler. - CORRECT
ANSWER-XXX
Two low water fuel cut-outs are required when the BTU input of the burner
exceeds: - CORRECT ANSWER-750,000
A boiler equipped with the two low water fuel cut-outs must have
_______________ on the secondary low water fuel cut-out. - CORRECT
ANSWER-A manual reset.
A boiler with a new burner OR a new boiler room must have: - CORRECT
ANSWER-A kill switch by each door leaving the boiler room.
The low water fuel cut off should be tested: - CORRECT ANSWER-At least
once a day when the boiler is in operation.
, What is the purpose of a check valve used in a feed water line going to a
steam boiler? - CORRECT ANSWER-To restrict the flow in one direction
only.
Where would you expect to locate pyrometer? - CORRECT ANSWER-In the
exhaust gases leaving the boiler 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.
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.
LICENSE PRACTICE EXAM QUESTIONS
2026 EDITION COMPLETE PRACTICE
QUESTIONS AND CORRECT ANSWERS
WITH DETAILED EXPLANATIONS
COMPREHENSIVE BOILER LICENSE STUDY
GUIDE
Give an example of cold water start for a hot water boiler. - CORRECT
ANSWER-XXX
Two low water fuel cut-outs are required when the BTU input of the burner
exceeds: - CORRECT ANSWER-750,000
A boiler equipped with the two low water fuel cut-outs must have
_______________ on the secondary low water fuel cut-out. - CORRECT
ANSWER-A manual reset.
A boiler with a new burner OR a new boiler room must have: - CORRECT
ANSWER-A kill switch by each door leaving the boiler room.
The low water fuel cut off should be tested: - CORRECT ANSWER-At least
once a day when the boiler is in operation.
, What is the purpose of a check valve used in a feed water line going to a
steam boiler? - CORRECT ANSWER-To restrict the flow in one direction
only.
Where would you expect to locate pyrometer? - CORRECT ANSWER-In the
exhaust gases leaving the boiler 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.
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.
