BOILER EXAM STUDY GUIDE 2
QUESTIONS & UPDATED CORRECT
ANSWERS PASSED ALREADY
GRADED A+ LATEST VERSION
removes 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 Steam traps are used wherever condensate collects.
T - CORRECT ANSWER T/F A steam trap is a device that removes air and condensate
without loss of steam.
QUESTIONS & UPDATED CORRECT
ANSWERS PASSED ALREADY
GRADED A+ LATEST VERSION
removes 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 Steam traps are used wherever condensate collects.
T - CORRECT ANSWER T/F A steam trap is a device that removes air and condensate
without loss of steam.
