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BOILER EXAM PRACTICE TESTS WITH ANSWERS 2024 #12.
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BOILER EXAM PRACTICE TESTS WITH ANSWERS 2024 #12Removes sludge and sediment from the mud drum - correct answer The bottom
blowdown on a boiler ___.
Outside diameter - correct answer Boiler tubes are sized using the ___.
Tin - correct answer A boiler fusible plug is brass or bronze with a core of ___.
Hairline cracks in the refractory - correct answer Spalling in a boiler refers to ___.
34.5 - correct answer Boiler horsepower is the evaporation of ___ lb of water/hr from
and at a feedwater temperature of 212°F.
Steam temperature - correct answer A siphon installed between the boiler and the
pressure gauge protects the Bourdon tube from___.
10 to 11.5 - correct answer The ph of the boiler water should be ___.
Steam leaving the boiler - correct answer The boiler superheater raises the temperature
of the ___.
Feedwater - correct answer An economizer is used to preheat ___.
Oily waste rags - correct answer Fires caused by spontaneous combustion would
probably start in the ___.
Dirty strainers - correct answer A high suction reading on the fuel oil pressure gauge
indicates ___.
Try cock - correct answer The ___ is a secondary means of determining boiler water
level.
Pyrometer - correct answer A(n) ___ is used to measure furnace temperature.
1 ½ - correct answer The range of a boiler pressure gauge must not be less than ___
times the safety valve setting.
Prevent formation of scale - correct answer Boiler feedwater is chemically treated to
___.
Deadweight tester - correct answer Pressure gauges are calibrated with a(n) ___.
Inside tube surface - correct answer In a firetube boiler, soot settles on the ___.
Complete - correct answer Carbon dioxide in the flue gas is a sign of ___ combustion.
,Incomplete - correct answer Carbon monoxide in the flue gas is a sign of ___
combustion.
Globe - correct answer ___ valves should be used for throttling service.
A dirty heating surface - correct answer A gradual increase in chimney temperature
indicates ___.
1 ½ - correct answer The pressure applied on the boiler during a hydrostatic test is ___
times the MAWP.
6 - correct answer Boiler safety valve capacity must be such that the steam pressure
can never go higher than ___% above the MAWP.
Decreased - correct answer As fuel oil is heated, its viscosity is ___.
6 - correct answer No. ___ fuel oil has the highest Btu content per gallon.
T - correct answer T/F All steam boilers must have one or more safety valves.
T - correct answer T/F An open feedwater heater vents gases to the atmosphere.
F - correct answer T/F A hydrostatic test will determine whether a steam boiler has
sufficient relieving capacity.
T - correct answer T/F When boilers are set in battery, the main steam stop valves,
bottom blowdown valves, and feedwater valves should be locked closed before anyone
enters the boiler drums.
F - correct answer T/F Open and closed feedwater heaters are never used at the same
time.
T - correct answer T/F In an open feedwater heater, the water and steam come into
direct contact; in a closed feedwater heater, the water and steam are separated.
T - correct answer T/F An economizer is a fuel-saving device that reclaims heat from
the gases of combustion.
F - correct answer T/F Soot accumulation on the tubes of a watertube boiler does not
affect the efficiency of the boiler.
F - correct answer T/F Scale protects the boiler heating surfaces.
F - correct answer T/F Boiler corrosion cannot be prevented as long as water is in
contact with metal.
, T - correct answer T/F To prevent water hammer, water should be drained out of all
high pressure steam lines
T - correct answer T/F Dry saturated steam is in a gaseous state.
F - correct answer T/F Pressure on water does not change the boiling point of the water.
F - correct answer T/F The stop valve in a boiler feedwater line should have the pump
discharge pressure on the top of the valve disc when the valve is closed.
T - correct answer T/F According to the ASME Code, weighted lever safety valves
cannot be used on boilers.
F - correct answer T/F The interior of the Bourdon tube in a steam pressure gauge is
always filled with live steam when it is operating.
T - correct answer T/F Safety valves on superheaters should be set to open before main
safety valves on boilers.
T - correct answer T/F When air preheaters or economizers are used in a boiler,
induced draft is usually employed.
T - correct answer T/F Waterwalls permit greater heat absorption per cubic foot of
furnace volume than refractory walls.
T - correct answer T/F A steam trap is a device that removes air and condensate
without loss of steam.
F - correct answer T/F Steam traps are only used on high-temperature hot water
systems.
T - correct answer T/F Steam traps are used wherever condensate collects.
F - correct answer T/F A boiler feedwater pump cannot become steambound.
F - correct answer T/F In both firetube and watertube boilers, the fire is inside the tubes.
T - correct answer T/F Foaming can lead to carryover.
Steam entering the huddling chamber exposing a larger area for the steam pressure to
act on - correct answer ___ makes a pop-type safety valve pop open.
Pulling the test lever by hand and then releasing it to allow it to "snap" closed - correct
answer Manual testing of the safety valve is accomplished by ___.
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