Boiler Exam Practice Tests
latest updated version with
expert solutions
removes sludge and sediment from the mud drum -
answer The bottom blowdown on a boiler ___.
outside diameter - answer Boiler tubes are sized using the
___.
tin - answer A boiler fusible plug is brass or bronze with a
core of ___.
hairline cracks in the refractory - answer Spalling in a
boiler refers to ___.
34.5 - answer Boiler horsepower is the evaporation of ___
lb of water/hr from and at a feedwater temperature of
212°F.
steam temperature - answer A siphon installed between
the boiler and the pressure gauge protects the Bourdon
tube from___.
10 to 11.5 - answer The pH of the boiler water should be
___.
,steam leaving the boiler - answer The boiler superheater
raises the temperature of the ___.
feedwater - answer An economizer is used to preheat ___.
oily waste rags - answer Fires caused by spontaneous
combustion would probably start in the ___.
dirty strainers - answer A high suction reading on the fuel
oil pressure gauge indicates ___.
try cock - answer The ___ is a secondary means of
determining boiler water level.
pyrometer - answer A(n) ___ is used to measure furnace
temperature.
1 ½ - answer The range of a boiler pressure gauge must
not be less than ___ times the safety valve setting.
prevent formation of scale - answer Boiler feedwater is
chemically treated to ___.
deadweight tester - answer Pressure gauges are
calibrated with a(n) ___.
inside tube surface - answer In a firetube boiler, soot
settles on the ___.
,complete - answer Carbon dioxide in the flue gas is a sign
of ___ combustion.
incomplete - answer Carbon monoxide in the flue gas is a
sign of ___ combustion.
Globe - answer ___ valves should be used for throttling
service.
a dirty heating surface - answer A gradual increase in
chimney temperature indicates ___.
1 ½ - answer The pressure applied on the boiler during a
hydrostatic test is ___ times the MAWP.
6 - answer Boiler safety valve capacity must be such that
the steam pressure can never go higher than ___% above
the MAWP.
decreased - answer As fuel oil is heated, its viscosity is
___.
6 - answer No. ___ fuel oil has the highest Btu content per
gallon.
T - answer T/F All steam boilers must have one or more
safety valves.
, T - answer T/F An open feedwater heater vents gases to
the atmosphere.
F - answer T/F A hydrostatic test will determine whether a
steam boiler has sufficient relieving capacity.
T - 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 - answer T/F Open and closed feedwater heaters are
never used at the same time.
T - 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 - answer T/F An economizer is a fuel-saving device that
reclaims heat from the gases of combustion.
F - answer T/F Soot accumulation on the tubes of a
watertube boiler does not affect the efficiency of the
boiler.
F - answer T/F Scale protects the boiler heating surfaces.
latest updated version with
expert solutions
removes sludge and sediment from the mud drum -
answer The bottom blowdown on a boiler ___.
outside diameter - answer Boiler tubes are sized using the
___.
tin - answer A boiler fusible plug is brass or bronze with a
core of ___.
hairline cracks in the refractory - answer Spalling in a
boiler refers to ___.
34.5 - answer Boiler horsepower is the evaporation of ___
lb of water/hr from and at a feedwater temperature of
212°F.
steam temperature - answer A siphon installed between
the boiler and the pressure gauge protects the Bourdon
tube from___.
10 to 11.5 - answer The pH of the boiler water should be
___.
,steam leaving the boiler - answer The boiler superheater
raises the temperature of the ___.
feedwater - answer An economizer is used to preheat ___.
oily waste rags - answer Fires caused by spontaneous
combustion would probably start in the ___.
dirty strainers - answer A high suction reading on the fuel
oil pressure gauge indicates ___.
try cock - answer The ___ is a secondary means of
determining boiler water level.
pyrometer - answer A(n) ___ is used to measure furnace
temperature.
1 ½ - answer The range of a boiler pressure gauge must
not be less than ___ times the safety valve setting.
prevent formation of scale - answer Boiler feedwater is
chemically treated to ___.
deadweight tester - answer Pressure gauges are
calibrated with a(n) ___.
inside tube surface - answer In a firetube boiler, soot
settles on the ___.
,complete - answer Carbon dioxide in the flue gas is a sign
of ___ combustion.
incomplete - answer Carbon monoxide in the flue gas is a
sign of ___ combustion.
Globe - answer ___ valves should be used for throttling
service.
a dirty heating surface - answer A gradual increase in
chimney temperature indicates ___.
1 ½ - answer The pressure applied on the boiler during a
hydrostatic test is ___ times the MAWP.
6 - answer Boiler safety valve capacity must be such that
the steam pressure can never go higher than ___% above
the MAWP.
decreased - answer As fuel oil is heated, its viscosity is
___.
6 - answer No. ___ fuel oil has the highest Btu content per
gallon.
T - answer T/F All steam boilers must have one or more
safety valves.
, T - answer T/F An open feedwater heater vents gases to
the atmosphere.
F - answer T/F A hydrostatic test will determine whether a
steam boiler has sufficient relieving capacity.
T - 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 - answer T/F Open and closed feedwater heaters are
never used at the same time.
T - 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 - answer T/F An economizer is a fuel-saving device that
reclaims heat from the gases of combustion.
F - answer T/F Soot accumulation on the tubes of a
watertube boiler does not affect the efficiency of the
boiler.
F - answer T/F Scale protects the boiler heating surfaces.
