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Special Boiler License Practice Exam Minnesota – Questions & Answers
Special Boiler License Practice Exam Minnesota – Questions & Answers
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Special Boiler License Practice Exam Minnesota –Questions & Answers
How many way can heat be transferred? ✔️Ans - Three (Conduction --
Convection -- Radiation)
How may types of low pressure are there? ✔️Ans - Three
Boiler and boiler fitting used in the state of Minnesota must be constructed to
what code? ✔️Ans - 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? ✔️Ans - 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: ✔️Ans -
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: ✔️Ans - Conduction --
Convection - Radiation
The first sequence in the series of automatic burner control is: ✔️Ans -
Purging
Can a low water low water condition i a hot water heating type boiler? ✔️Ans
- Yes, for numerous reasons
Other than a safety relieve valve what other safety device should be installed
on a hot water heating boiler? ✔️Ans - Low water cut off
Each boiler in a battery (pipe together sharing the same common header)
must have: ✔️Ans - A main stem stop
what removes air from a hot water boiler system? ✔️Ans - Air Control
In a stem boiler system, the unit that turns be burner on and off based on
steam pressure is the: ✔️Ans - Pressure Control
, If water in the gauge is not visible because of failure of the feed water supply,
what should be done? ✔️Ans - Shut off the fuel to the burner and secure the
boiler.
What conditions are necessary to cause a furnace explosion? ✔️Ans -
Accumulation of unburned fuel, oxygen and an ignition source
The LWCO should be tested: ✔️Ans - Daily
Gauge pressure plus 14.7 psi is called what? ✔️Ans - Absolute pressure
The evaporation of 34.5 ponds of water per hour from and at a temperature of
212 degrees Fahrenheit is defined as: ✔️Ans - One boiler horsepower
When a safety valve opens and closes rapidly it is referred to as ✔️Ans -
Chattering
Furnace explosions are caused by a buildup of combustible gases, or vapors in
the combustion chamber, what is the term used to remedy this condition?
✔️Ans - Purging
Why is a pigtail or siphon required in steam pressure gauge lines? ✔️Ans -
to protect the gauge from a high temperature.
In a stem boiler system, what is the term used for replacing the water that has
been lost by blowing down the boiler through leaks in the system? ✔️Ans - A
make up water
On steam boiler system, why are bottom blow down valves installed at the
lowest point of the waterside of boilers? ✔️Ans - To remove sludge and
sediment.
Boiler heating is defining as : ✔️Ans - Water on one side hot gases on the
other side.
In a fire tube boiler, the water ✔️Ans - Surrounds the tubes
When the bottom blow down valves are used on a steam boiler, what valve
located closet to the boiler shell? ✔️Ans - The quick opening valve
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