Minnesota Special Engineer Boiler License Practice
ACTUAL PRACTICE EXAM 2026/2027 TEST BANK
PRACTICE QUESTIONS AND STUDY GUIDE
ACCURATE EXAM COMPLETE REAL QUESTIONS AND
CORRECT VERIFIED SOLUTIONS WITH DETAILED
RATIONALES (RELIABLE ANSWERS) CURRENTLY
UPDATED VERSION 2026 EDITION
A boiler equipped with the two low water fuel cut-outs must have
_______________ on the secondary low water fuel cut-out.
A manual reset.
A boiler with a new burner OR a new boiler room must have:
A kill switch by each door leaving the boiler room.
The low water fuel cut off should be tested:
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?
To restrict the flow in one direction only.
Where would you expect to locate pyrometer?
In the exhaust gases leaving the boiler
,What would the pyrometer tell you?
The temperature
An aqua state would be used on what type of boiler?
A hot water boiler
Globe valves are used when you need to:
Throttle or restrict the flow
Three types of drafts are:
Natural, forced, and induced.
How many way can heat be transferred?
Three (Conduction -- Convection -- Radiation)
How may types of low pressure are there?
Three
Boiler and boiler fitting used in the state of Minnesota must be
constructed to what code?
A.S.M.E
What controls the starting ans stopping of the burner by sending the
temperature of the water in a hot water boiler?
Aqua Stat
,When a hydrostatic test of a boiler exceeds the maximum allowed
working pressure each safety valve, if left attached to the boiler, should:
Have its valve disc held to its seat by means of testing clamp or "gag"
Heat can be transferred in three ways and they are:
Conduction --Convection - Radiation
The first sequence in the series of automatic burner control is:
Purging
Can a low water low water condition i a hot water heating type boiler?
Yes, for numerous reasons
Other than a safety relieve valve what other safety device should be
installed on a hot water heating boiler?
Low water cut off
Each boiler in a battery (pipe together sharing the same common
header) must have:
A main stem stop
what removes air from a hot water boiler system?
Air Control
, In a stem boiler system, the unit that turns be burner on and off based
on steam pressure is the:
Pressure Control
If water in the gauge is not visible because of failure of the feed water
supply, what should be done?
Shut off the fuel to the burner and secure the boiler.
What conditions are necessary to cause a furnace explosion?
Accumulation of unburned fuel, oxygen and an ignition source
The LWCO should be tested:
Daily
Gauge pressure plus 14.7 psi is called what?
Absolute pressure
The evaporation of 34.5 ponds of water per hour from and at a
temperature of 212 degrees Fahrenheit is defined as:
One boiler horsepower
When a safety valve opens and closes rapidly it is referred to as
Chattering
ACTUAL PRACTICE EXAM 2026/2027 TEST BANK
PRACTICE QUESTIONS AND STUDY GUIDE
ACCURATE EXAM COMPLETE REAL QUESTIONS AND
CORRECT VERIFIED SOLUTIONS WITH DETAILED
RATIONALES (RELIABLE ANSWERS) CURRENTLY
UPDATED VERSION 2026 EDITION
A boiler equipped with the two low water fuel cut-outs must have
_______________ on the secondary low water fuel cut-out.
A manual reset.
A boiler with a new burner OR a new boiler room must have:
A kill switch by each door leaving the boiler room.
The low water fuel cut off should be tested:
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?
To restrict the flow in one direction only.
Where would you expect to locate pyrometer?
In the exhaust gases leaving the boiler
,What would the pyrometer tell you?
The temperature
An aqua state would be used on what type of boiler?
A hot water boiler
Globe valves are used when you need to:
Throttle or restrict the flow
Three types of drafts are:
Natural, forced, and induced.
How many way can heat be transferred?
Three (Conduction -- Convection -- Radiation)
How may types of low pressure are there?
Three
Boiler and boiler fitting used in the state of Minnesota must be
constructed to what code?
A.S.M.E
What controls the starting ans stopping of the burner by sending the
temperature of the water in a hot water boiler?
Aqua Stat
,When a hydrostatic test of a boiler exceeds the maximum allowed
working pressure each safety valve, if left attached to the boiler, should:
Have its valve disc held to its seat by means of testing clamp or "gag"
Heat can be transferred in three ways and they are:
Conduction --Convection - Radiation
The first sequence in the series of automatic burner control is:
Purging
Can a low water low water condition i a hot water heating type boiler?
Yes, for numerous reasons
Other than a safety relieve valve what other safety device should be
installed on a hot water heating boiler?
Low water cut off
Each boiler in a battery (pipe together sharing the same common
header) must have:
A main stem stop
what removes air from a hot water boiler system?
Air Control
, In a stem boiler system, the unit that turns be burner on and off based
on steam pressure is the:
Pressure Control
If water in the gauge is not visible because of failure of the feed water
supply, what should be done?
Shut off the fuel to the burner and secure the boiler.
What conditions are necessary to cause a furnace explosion?
Accumulation of unburned fuel, oxygen and an ignition source
The LWCO should be tested:
Daily
Gauge pressure plus 14.7 psi is called what?
Absolute pressure
The evaporation of 34.5 ponds of water per hour from and at a
temperature of 212 degrees Fahrenheit is defined as:
One boiler horsepower
When a safety valve opens and closes rapidly it is referred to as
Chattering
