Minnesota Special Engineer Boiler License
Practice Exam Questions with 100% Correct
Answers | Verified | Latest Update
Question 1
A high pressure boiler of 25 HO should be checked every?
Correct Answer
24 hrs.
Question 2
What type of valve is permitted to shut off a steam gauge?
Correct Answer
A tee or lever handle valve
Question 3
Commercial watertube boiler
Correct Answer
Produces steam/hot water for commercial/med size applications, there are straight
tube, bent tube, and membrane watertube types
Question 4
Oxygen in the boiler can cause what?
Correct Answer
Corrosion
Page 1 of 108
,Question 5
Tiny particles of water that are carried into the steam lines are called what?
Correct Answer
Carryover
Question 6
What is the core of a boiler fusible plug made of?
Correct Answer
Tin
Question 7
A boiler should be blown when it is at?
Correct Answer
Light load
Question 8
Try Lever Test
Correct Answer
determines if safety valve and discharge piping are capable of discharging steam --
performed by lifting the safety valve try lever
Question 9
The last possible date that the inspection can be complete within the time limits in
this chapater.
Correct Answer
Inspection Due Date
Page 2 of 108
,Question 10
Where is the breeching located at on boiler?
Correct Answer
Between the chimney and the boiler
Question 11
If two bottom blow down valves are used on a steam boiler, the valve closes to the
shell is a?
Correct Answer
Quick opening
Question 12
Pressure reducing valve
Correct Answer
A valve which maintains uniform pressure on its outlet side regardless of its
pressure fluctuations on the inlet side above the pressure level. Reduces incoming
city water pressure of ~60 psi down to the boiler system pressure setting.
Question 13
How does water circulation in a firetube boiler work?
Correct Answer
Water is heated by the firetubes, which decreases its density, causing it to rise and
circulating cooler, more dense water down to be heated
Question 14
Natural circulation hot water heating system
Correct Answer
An open system that uses the difference in the density between hot and cool water
to move it through the system. Utilizes an expansion tank above the heating units
to maintain a constant pressure in the system.
Page 3 of 108
, Question 15
When blowing down a boiler with a quick opening and a screw type valve, the quick
opening valve is ________
Correct Answer
opened first and closed last
Question 16
What type of boiler has the water running through the tubes?
Correct Answer
Water tube
Question 17
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
Question 18
The three most common type of low-pressure boilers are?
Correct Answer
Fire tube, Cast Iron, and Water Tube.
Question 19
The first sequence in the series of automatic burner control is:
Correct Answer
Purging
Page 4 of 108
Practice Exam Questions with 100% Correct
Answers | Verified | Latest Update
Question 1
A high pressure boiler of 25 HO should be checked every?
Correct Answer
24 hrs.
Question 2
What type of valve is permitted to shut off a steam gauge?
Correct Answer
A tee or lever handle valve
Question 3
Commercial watertube boiler
Correct Answer
Produces steam/hot water for commercial/med size applications, there are straight
tube, bent tube, and membrane watertube types
Question 4
Oxygen in the boiler can cause what?
Correct Answer
Corrosion
Page 1 of 108
,Question 5
Tiny particles of water that are carried into the steam lines are called what?
Correct Answer
Carryover
Question 6
What is the core of a boiler fusible plug made of?
Correct Answer
Tin
Question 7
A boiler should be blown when it is at?
Correct Answer
Light load
Question 8
Try Lever Test
Correct Answer
determines if safety valve and discharge piping are capable of discharging steam --
performed by lifting the safety valve try lever
Question 9
The last possible date that the inspection can be complete within the time limits in
this chapater.
Correct Answer
Inspection Due Date
Page 2 of 108
,Question 10
Where is the breeching located at on boiler?
Correct Answer
Between the chimney and the boiler
Question 11
If two bottom blow down valves are used on a steam boiler, the valve closes to the
shell is a?
Correct Answer
Quick opening
Question 12
Pressure reducing valve
Correct Answer
A valve which maintains uniform pressure on its outlet side regardless of its
pressure fluctuations on the inlet side above the pressure level. Reduces incoming
city water pressure of ~60 psi down to the boiler system pressure setting.
Question 13
How does water circulation in a firetube boiler work?
Correct Answer
Water is heated by the firetubes, which decreases its density, causing it to rise and
circulating cooler, more dense water down to be heated
Question 14
Natural circulation hot water heating system
Correct Answer
An open system that uses the difference in the density between hot and cool water
to move it through the system. Utilizes an expansion tank above the heating units
to maintain a constant pressure in the system.
Page 3 of 108
, Question 15
When blowing down a boiler with a quick opening and a screw type valve, the quick
opening valve is ________
Correct Answer
opened first and closed last
Question 16
What type of boiler has the water running through the tubes?
Correct Answer
Water tube
Question 17
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
Question 18
The three most common type of low-pressure boilers are?
Correct Answer
Fire tube, Cast Iron, and Water Tube.
Question 19
The first sequence in the series of automatic burner control is:
Correct Answer
Purging
Page 4 of 108
