BOMA Steam Exam Questions and Answers
What water treatment chemical controls alkalinity? - Answer-Hydrazine
To eliminate the danger of furnace explosion during start up the firing sequence must first allow for - Answer-pre-purging period, pilot ignition, proving the pilot, proving the main f...
What water treatment chemical controls alkalinity? - Answer-Hydrazine
To eliminate the danger of furnace explosion during start up the firing sequence must
first allow for - Answer-pre-purging period, pilot ignition, proving the pilot, proving the
main flame
Which of the following do you not do when lightnig a cold boiler? - Answer-Raise the
water level to above the 1/2 glass
why bring the heat up slowly when lighting off a boiler? - Answer-To control refractory
contraction, to prevent thermal shock
The boiler vent is open when warming the boiler until there is - Answer-approximately
25 psi steam in the boiler
What difficukties may be encountered operating an oil fired plant? - Answer-Oil too
heavy and vapor formation
Where is atomization accomplished in steam atomizing burns? - Answer-As the steam
crosses the jets of oil
Which is necessary for efficient combustion? - Answer-Air tight fittings
Water hammer in steam lines is caused by - Answer-Low steam pressure
Thermo-couples measure - Answer-Temperature
The positioning combustive control system is sensitive to changes in - Answer-Boiler
header pressure
Carbon dioxide readings in flue gases should be maintained at - Answer-10% to 12%
Combustion air is controlled by - Answer-inlet dampers, fan inlet vanes, speed air.
, The purpose of boiler modulating pressure control is to - Answer-Regulate high and low
firing rates of the boiler
Air that controls the rate of combustion is - Answer-Secondary air
Three methods of transferring heat are - Answer-conduction, convection, radiation
The method of transferring heat of a fluid, liqquid, or gas is - Answer-Convection
the best example of heat transfer by radiation is - Answer-heat from the sun
The total heat in BTU's required to convert one pound of ice at 32 degrees F. to water at
132 degrees F. is - Answer-244BTU's (144 BTU latent plus 100 BTU sensible)
The boiling point of water at 300 psi is __________ the boiling point at 275 psi. -
Answer-Higher than
The heat required to convert one pound of water to 212 degrees F. to steam is -
Answer-970.3 BTU's
The point in which vapoer chamges to liquid is called - Answer-Dewpoint
The rankin scale begins at - Answer-429 degrees F
The actual zero freezing point of water is - Answer-273 degrees Kelvin
Heat in which a change of state occurs is called - Answer-Latent heat
Charles laws deal with - Answer-Expansion of gases
Liquid glass thermometers are made to measure - Answer-Low temperature
The number of BTU's required to raise the temperature of one pound of substance one
degree F. is known as - Answer-Specific heat
The recommended PH level in a boiler is - Answer-9 to 10
The purpose of a boiler pressure control found on an on/off system is to - Answer-Start
and stop the burner on steam pressure demand
Mechanical drafts can be classified as - Answer-Induced
Mechanical drafts are generally produced by - Answer-The power of the driven fan
The gases of combustion leaving a boiler that has natural draft are controlled by -
Answer-Outlet dampers
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