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SPECIAL BOILER LICENSE PRACTICE EXAM MINNESOTA QUESTIONS AND ANSWERS #2.
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SPECIAL BOILER LICENSE PRACTICE EXAM MINNESOTA QUESTIONS AND ANSWERS #2.
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SPECIAL BOILER LICENSE PRACTICE EXAM MINNESOTAQUESTIONS AND ANSWERS #2
How many way can heat be transferred? - correct answer Three (Conduction --
Convection -- Radiation)
How may types of low pressure are there? - correct answer Three
Boiler and boiler fitting used in the state of Minnesota must be constructed to what
code? - correct answer 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? - correct answer 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: - correct answer 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: - correct answer Conduction --
Convection - Radiation
The first sequence in the series of automatic burner control is: - correct answer Purging
Can a low water low water condition i a hot water heating type boiler? - correct answer
Yes, for numerous reasons
Other than a safety relieve valve what other safety device should be installed on a hot
water heating boiler? - correct answer Low water cut off
Each boiler in a battery (pipe together sharing the same common header) must have: -
correct answer A main stem stop
What removes air from a hot water boiler system? - correct answer Air Control
In a stem boiler system, the unit that turns be burner on and off based on steam
pressure is the: - correct answer Pressure Control
If water in the gauge is not visible because of failure of the feed water supply, what
should be done? - correct answer Shut off the fuel to the burner and secure the boiler.
What conditions are necessary to cause a furnace explosion? - correct answer
Accumulation of unburned fuel, oxygen and an ignition source
The LWCO should be tested: - correct answer Daily
Gauge pressure plus 14.7 psi is called what? - correct answer Absolute pressure
, The evaporation of 34.5 ponds of water per hour from and at a temperature of 212
degrees Fahrenheit is defined as: - correct answer One boiler horsepower
When a safety valve opens and closes rapidly it is referred to as - correct answer
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? - correct answer
Purging
Why is a pigtail or siphon required in steam pressure gauge lines? - correct answer 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? - correct answer A make up
water
On steam boiler system, why are bottom blow down valves installed at the lowest point
of the waterside of boilers? - correct answer To remove sludge and sediment.
Boiler heating is defining as : - correct answer Water on one side hot gases on the other
side.
In a fire tube boiler, the water - correct answer Surrounds the tubes
When the bottom blow down valves are used on a steam boiler, what valve located
closet to the boiler shell? - correct answer The quick opening valve
What is the function of an automatic city water feeder on a low pressure boiler? - correct
answer To control water to the feed water tank
The purpose of a safety valve on a steam boiler is to: - correct answer To prevent the
boiler from exceeding its MAWP
The control designed as a safety back up, should the operating fail is: - correct answer
A high limit control
The capacity of a safety valve used on a steam boiler is measure in: - correct answer
pounds of steam that can be discharge in one hour.
How does a pressuretrol attach to the steam space of boiler control the burner
operation? - correct answer On pressure decrease - starts the burner.
What action should an operating engineer take if a defect is discovered in a boiler
requiring repairs not of a routine nature? - correct answer Notify the boiler inspector.
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