MN Boiler License Test Bank. Latest
Edition 2025-2026. Questions &
Correct Answers. Graded A
"Operating experience" according to MN State statutes includes includes
which of the following?
a) Boiler Operation
b) Maintenance
c) Training
d) Observation
e) Personal Participation - ANSall
a) Boiler Operation
b) Maintenance
c) Training
d) Observation
e) Personal Participation
(ASME) developed the 'Boiler and Pressure Vessel Code' which forms the
basis for laws in the US and Internationally in what year?
a) 1880
b) 1920
c) 1914 - ANSc) 1914
(ASME) stand for what?
a) American Standards for Mechanical Electricians
1
,b) American Society of Mechanical Engineers
c) Allied Sciences and Mechanics Emeritus - ANSb) American Society of
Mechanical Engineers
founded in 1880
2.3 feet of water or 27 inches equals 1 pound per square inch of pressure?
a) yes
b) no
c) only if the water temperature is above 212 degrees Fahrenheit
d) none of the answers given - ANSa) yes
2.3 x .433 = .9959 ~ 1
0.433 pounds per square inch of pressure.
a bearing is said to be brass bound when:
a) it is made of brass
b) it is held together with a brass ring
c) the babbit is all worn out
d) brass bolts are used - ANSc) the babbit is all worn out
a boiler with more than 500 square feet of heating surface must have:
a) one safety valve
b) two or more safety valves
c) three safety valves
d) four safety valves - ANSb) two or more safety valves
A BTU is the amount of energy needed to heat _____ of water _____?
2
,a) ounce, 1 F
b) pound, 1 F
c) kilogram, 1 C - ANSB pound 1 F
A chief class operating license is required to take charge of a boiler plant
over what horsepower?
a) 50 bhp
b) 500 bhp
c) 300 bhp - ANSc) 300 bhp
must be in attendance 4 hrs a day for 5 days a week except for sick and
vacation time or holidays.
a company is monitoring boilers by remote electronic surveillance. Do they
need a licensed engineer for monitoring?
a) only on high-pressure boilers
b) yes
c) no, see section 13, 183. 501 - ANSc) no, see section 13, 183. 501
a compound engine uses the same steam:
a) 1x
b) 2x
c) 3x
d) 4x - ANSb) 2x
a device that controls the stopping and starting of the burner on a hot water
boiler is a/n?
a) pressure trol
3
, b) aqua-stat
c) low water cut out
d) sail switch - ANSb) aqua-stat
a first class grade B engineer could take charge of and be responsible for
the safe operation and maintenance of boilers of not more than how many
bhp?
a) 200 bhp
b) 500 bhp
c) unlimited bhp - ANSb) 500 bhp
a first-class engineer may take charge of a boiler plant not to exceed:
a) 150 horsepower
b) 600 horsepower
c) 500 horsepower - ANSc) 500 horsepower
a good percentage of carbon dioxide when burning oil is:
a) 12%
b) 8 %
c) 10% - ANSa) 12%
a high pressure boiler plant of 30 or less bhp must be attended (checked)
to?
a) daily
b) 4 hours a day
c) cannot be left unattended over consecutive 2 hrs - ANSa) daily
4
Edition 2025-2026. Questions &
Correct Answers. Graded A
"Operating experience" according to MN State statutes includes includes
which of the following?
a) Boiler Operation
b) Maintenance
c) Training
d) Observation
e) Personal Participation - ANSall
a) Boiler Operation
b) Maintenance
c) Training
d) Observation
e) Personal Participation
(ASME) developed the 'Boiler and Pressure Vessel Code' which forms the
basis for laws in the US and Internationally in what year?
a) 1880
b) 1920
c) 1914 - ANSc) 1914
(ASME) stand for what?
a) American Standards for Mechanical Electricians
1
,b) American Society of Mechanical Engineers
c) Allied Sciences and Mechanics Emeritus - ANSb) American Society of
Mechanical Engineers
founded in 1880
2.3 feet of water or 27 inches equals 1 pound per square inch of pressure?
a) yes
b) no
c) only if the water temperature is above 212 degrees Fahrenheit
d) none of the answers given - ANSa) yes
2.3 x .433 = .9959 ~ 1
0.433 pounds per square inch of pressure.
a bearing is said to be brass bound when:
a) it is made of brass
b) it is held together with a brass ring
c) the babbit is all worn out
d) brass bolts are used - ANSc) the babbit is all worn out
a boiler with more than 500 square feet of heating surface must have:
a) one safety valve
b) two or more safety valves
c) three safety valves
d) four safety valves - ANSb) two or more safety valves
A BTU is the amount of energy needed to heat _____ of water _____?
2
,a) ounce, 1 F
b) pound, 1 F
c) kilogram, 1 C - ANSB pound 1 F
A chief class operating license is required to take charge of a boiler plant
over what horsepower?
a) 50 bhp
b) 500 bhp
c) 300 bhp - ANSc) 300 bhp
must be in attendance 4 hrs a day for 5 days a week except for sick and
vacation time or holidays.
a company is monitoring boilers by remote electronic surveillance. Do they
need a licensed engineer for monitoring?
a) only on high-pressure boilers
b) yes
c) no, see section 13, 183. 501 - ANSc) no, see section 13, 183. 501
a compound engine uses the same steam:
a) 1x
b) 2x
c) 3x
d) 4x - ANSb) 2x
a device that controls the stopping and starting of the burner on a hot water
boiler is a/n?
a) pressure trol
3
, b) aqua-stat
c) low water cut out
d) sail switch - ANSb) aqua-stat
a first class grade B engineer could take charge of and be responsible for
the safe operation and maintenance of boilers of not more than how many
bhp?
a) 200 bhp
b) 500 bhp
c) unlimited bhp - ANSb) 500 bhp
a first-class engineer may take charge of a boiler plant not to exceed:
a) 150 horsepower
b) 600 horsepower
c) 500 horsepower - ANSc) 500 horsepower
a good percentage of carbon dioxide when burning oil is:
a) 12%
b) 8 %
c) 10% - ANSa) 12%
a high pressure boiler plant of 30 or less bhp must be attended (checked)
to?
a) daily
b) 4 hours a day
c) cannot be left unattended over consecutive 2 hrs - ANSa) daily
4
