MN Special Boilers License Prep Test Latest
Update 2024-2025 Actual Exam from Credible
Sources with 300 Questions and Verified Correct
Answers Golden Ticket to Guaranteed A+
Verified by Professor
1 boiler horsepower = - CORRECT ANSWER: = 10 sq. Ft of heating surface
1.5-2x MAWP - CORRECT ANSWER: What range does a steam gauge have?
10 kilowatts (for licensing) - CORRECT ANSWER: _____ kilowatts = 1 horsepower
150 degrees Fahrenheit - CORRECT ANSWER: What is the max temperature you can
send water down the sewer?
150,000 BTUs per gallon - CORRECT ANSWER: What is #6 fuel oil rated at?
1st Class (License Class) - CORRECT ANSWER: Take Charge (max 500 hpr)
Shift Engineer (unlimited hpr)
2,000 - CORRECT ANSWER: One (1) year of high-pressure experience is equal to
__________ working hours.
25 BTU - CORRECT ANSWER: How many BTU's will it take to increase the
temperature of 5 pounds of water 5 degrees?
2nd Class (License Class) - CORRECT ANSWER: Take Charge (max 100 hpr)
Shift Engineer (max 500 hpr)
,350 - CORRECT ANSWER: The water column must be made out of steel if the psi is
over what?
4 1/2 inches - CORRECT ANSWER: The maximum size of safety valve that can be
used is what?
67,000 BTU/hr (for licensing) - CORRECT ANSWER: __________ BTU/hr = 1
horsepower
7 to 11 - CORRECT ANSWER: What is the typical pH range for boiler water?
8.3 - CORRECT ANSWER: 1 gallon of water weighs _____ pounds
A Single Hot Water Heater - CORRECT ANSWER: Stop valves may be eliminated for
what type of boiler when the boiler is located above the system?
A, D, O - CORRECT ANSWER: What are the common types of watertube boilers?
A.S.M.E. Approved - CORRECT ANSWER: What type of safety valve is required?
Above 15 psi, above 160 psi water, and temps above 250°F - CORRECT ANSWER: A
high pressure boiler is classified as such when what - ?
Adds sensible heat to steam - CORRECT ANSWER: What is a superheater?
All the sediment should be settled at the bottom during light load - CORRECT
ANSWER: Why should a boiler be at light load for a boiler blowdown?
Allows for expansion in the piping - CORRECT ANSWER: What does an expansion
loop do?
, Aquastat - CORRECT ANSWER: Hydronic systems have a(n) ______________ to turn
the burner on or off
ASME - CORRECT ANSWER: American Society of Mechanical Engineers
At least as big as the largest incoming wire - CORRECT ANSWER: On electric boilers,
how large should the ground wire be?
At least monthly - CORRECT ANSWER: How often should the LWCO be tested?
At low load such as start up - CORRECT ANSWER: When are explosions most likely to
happen?
Atomized - CORRECT ANSWER: What must all oils be?
Automatic non-return valve - CORRECT ANSWER: When you have two (2) check
valves, it is recommended to have what?
Baffle - CORRECT ANSWER: Directs flow of combustion gasses, water, and/or steam
Balanced/combined - CORRECT ANSWER: What is it called when both forced and
induced drafts are used?
Breeching - CORRECT ANSWER: Connects boiler to the stack
Breeching or stack temperatures - CORRECT ANSWER: What are good indications of
boiler efficiency?
Broken baffle, soot, or scale - CORRECT ANSWER: What will cause high stack
temperatures?
Update 2024-2025 Actual Exam from Credible
Sources with 300 Questions and Verified Correct
Answers Golden Ticket to Guaranteed A+
Verified by Professor
1 boiler horsepower = - CORRECT ANSWER: = 10 sq. Ft of heating surface
1.5-2x MAWP - CORRECT ANSWER: What range does a steam gauge have?
10 kilowatts (for licensing) - CORRECT ANSWER: _____ kilowatts = 1 horsepower
150 degrees Fahrenheit - CORRECT ANSWER: What is the max temperature you can
send water down the sewer?
150,000 BTUs per gallon - CORRECT ANSWER: What is #6 fuel oil rated at?
1st Class (License Class) - CORRECT ANSWER: Take Charge (max 500 hpr)
Shift Engineer (unlimited hpr)
2,000 - CORRECT ANSWER: One (1) year of high-pressure experience is equal to
__________ working hours.
25 BTU - CORRECT ANSWER: How many BTU's will it take to increase the
temperature of 5 pounds of water 5 degrees?
2nd Class (License Class) - CORRECT ANSWER: Take Charge (max 100 hpr)
Shift Engineer (max 500 hpr)
,350 - CORRECT ANSWER: The water column must be made out of steel if the psi is
over what?
4 1/2 inches - CORRECT ANSWER: The maximum size of safety valve that can be
used is what?
67,000 BTU/hr (for licensing) - CORRECT ANSWER: __________ BTU/hr = 1
horsepower
7 to 11 - CORRECT ANSWER: What is the typical pH range for boiler water?
8.3 - CORRECT ANSWER: 1 gallon of water weighs _____ pounds
A Single Hot Water Heater - CORRECT ANSWER: Stop valves may be eliminated for
what type of boiler when the boiler is located above the system?
A, D, O - CORRECT ANSWER: What are the common types of watertube boilers?
A.S.M.E. Approved - CORRECT ANSWER: What type of safety valve is required?
Above 15 psi, above 160 psi water, and temps above 250°F - CORRECT ANSWER: A
high pressure boiler is classified as such when what - ?
Adds sensible heat to steam - CORRECT ANSWER: What is a superheater?
All the sediment should be settled at the bottom during light load - CORRECT
ANSWER: Why should a boiler be at light load for a boiler blowdown?
Allows for expansion in the piping - CORRECT ANSWER: What does an expansion
loop do?
, Aquastat - CORRECT ANSWER: Hydronic systems have a(n) ______________ to turn
the burner on or off
ASME - CORRECT ANSWER: American Society of Mechanical Engineers
At least as big as the largest incoming wire - CORRECT ANSWER: On electric boilers,
how large should the ground wire be?
At least monthly - CORRECT ANSWER: How often should the LWCO be tested?
At low load such as start up - CORRECT ANSWER: When are explosions most likely to
happen?
Atomized - CORRECT ANSWER: What must all oils be?
Automatic non-return valve - CORRECT ANSWER: When you have two (2) check
valves, it is recommended to have what?
Baffle - CORRECT ANSWER: Directs flow of combustion gasses, water, and/or steam
Balanced/combined - CORRECT ANSWER: What is it called when both forced and
induced drafts are used?
Breeching - CORRECT ANSWER: Connects boiler to the stack
Breeching or stack temperatures - CORRECT ANSWER: What are good indications of
boiler efficiency?
Broken baffle, soot, or scale - CORRECT ANSWER: What will cause high stack
temperatures?
