STATIONARY ENGINEER EXAM
The furnace is almost always in a ___________ pressure.
Negative
Positive - ANSWERS-Negative
In an open feedwater heater or de-aerating feedwater tank, a clogged
vent line will _______ air/non-condensables in feedwater.
Increase
Decrease - ANSWERS-Increase
Reciprocating pump- rated by diameter of piston. 4x2x4 pump. The
first number is the diameter of the ___________. The second number
is the diameter of the ______. The third number is the length of
________. - ANSWERS-steam piston, water piston, stroke
Suction valve on reciprocating pump allows water into the ______
and keeps it from backing up into the ______ line. If suction water is
too hot the pump will become steam bound. - ANSWERS-cylinder,
suction
Horizontal split case centrifugal pump- center eye of impeller is
________ suction pressure. _________ is the formation and collapse
of vapor bubbles which will cause vibration and noise. Caused by
,__________ water temp or low pressure. Vibration causes damage. -
ANSWERS-Lowest, Cavitation, high
Condensate system has ________ vent on top. Condensate is treated
to get rid of ____________. - ANSWERS-atmospheric. carbonic acid.
The feedwater regulating valve has a _________ line to get rid of
sludge/sediment - ANSWERS-blowdown
Thermostatic type steam traps are used on ____________ -
ANSWERS-radiators
Steam traps increase efficiency by removing ___________ and
__________ from the system - ANSWERS-air and condensate
If multiple safeties are on a boiler- the range of their settings should
be _____ - ANSWERS-10%
If a boiler has 500 square feet or more of heating surface, ___
feedwater pumps are needed - ANSWERS-2
Oily rags should be stored/disposed properly to prevent spontaneous -
ANSWERS-combustion
It is safer to light off a _____ plant than a ______one - ANSWERS-
cold, hot
, a cold plant is any boiler plant that has been down for _____ days or
more - ANSWERS-2
The rotary cup is a popular way to _____ fuel oil - ANSWERS-
atomize
_______ air controls the rate of combustion. - ANSWERS-Primary
_________ air controls the efficiency of combustion. - ANSWERS-
Secondary
Failure to _____ with fresh air can result in a furnace explosion. -
ANSWERS-pre-purge
Modulating control systems start and end in _______ - ANSWERS-
low fire
If more steam pressure is needed, increase _____ and _____. -
ANSWERS-fuel and air
____ lbs of air are needed for every 1 lb of fuel for proper combustion
- ANSWERS-15
Draft is measured with a _____ or draft gauge - ANSWERS-
manometer
The furnace is almost always in a ___________ pressure.
Negative
Positive - ANSWERS-Negative
In an open feedwater heater or de-aerating feedwater tank, a clogged
vent line will _______ air/non-condensables in feedwater.
Increase
Decrease - ANSWERS-Increase
Reciprocating pump- rated by diameter of piston. 4x2x4 pump. The
first number is the diameter of the ___________. The second number
is the diameter of the ______. The third number is the length of
________. - ANSWERS-steam piston, water piston, stroke
Suction valve on reciprocating pump allows water into the ______
and keeps it from backing up into the ______ line. If suction water is
too hot the pump will become steam bound. - ANSWERS-cylinder,
suction
Horizontal split case centrifugal pump- center eye of impeller is
________ suction pressure. _________ is the formation and collapse
of vapor bubbles which will cause vibration and noise. Caused by
,__________ water temp or low pressure. Vibration causes damage. -
ANSWERS-Lowest, Cavitation, high
Condensate system has ________ vent on top. Condensate is treated
to get rid of ____________. - ANSWERS-atmospheric. carbonic acid.
The feedwater regulating valve has a _________ line to get rid of
sludge/sediment - ANSWERS-blowdown
Thermostatic type steam traps are used on ____________ -
ANSWERS-radiators
Steam traps increase efficiency by removing ___________ and
__________ from the system - ANSWERS-air and condensate
If multiple safeties are on a boiler- the range of their settings should
be _____ - ANSWERS-10%
If a boiler has 500 square feet or more of heating surface, ___
feedwater pumps are needed - ANSWERS-2
Oily rags should be stored/disposed properly to prevent spontaneous -
ANSWERS-combustion
It is safer to light off a _____ plant than a ______one - ANSWERS-
cold, hot
, a cold plant is any boiler plant that has been down for _____ days or
more - ANSWERS-2
The rotary cup is a popular way to _____ fuel oil - ANSWERS-
atomize
_______ air controls the rate of combustion. - ANSWERS-Primary
_________ air controls the efficiency of combustion. - ANSWERS-
Secondary
Failure to _____ with fresh air can result in a furnace explosion. -
ANSWERS-pre-purge
Modulating control systems start and end in _______ - ANSWERS-
low fire
If more steam pressure is needed, increase _____ and _____. -
ANSWERS-fuel and air
____ lbs of air are needed for every 1 lb of fuel for proper combustion
- ANSWERS-15
Draft is measured with a _____ or draft gauge - ANSWERS-
manometer
