3rd class stationary steam engineer license prep Questions
and Answers
_________ are necessary for complete combustion - (correct answer) -time,
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temperature, mixture, and atomization
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if the steam pressure gauge indicates 200 PSIG, the absolute pressure is______ -
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(correct answer) -214.7
hi hi hi
a boiler is operating at 400 PSI, and the safety valve opens at 410 PSI and closes at 398
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PSI. The blowdown is______psi - (correct answer) -12
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an oil cooler is commonly used with a(n) ________ when operating in conjunction with a
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turbo-generator - (correct answer) -steam turbine
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a boiler is producing 40,000lb of steam/hr at a pressure of 100 PSI and a steam
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temperature of 500 degrees Fahrenheit. The steam produced is _______ steam -
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(correct answer) -superheated
hi hi hi
the economizer on a boiler is used to _______ - (correct answer) -add heat to the feed
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water
hi
blowers are normally used with________ boilers - (correct answer) -water tube
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overheating of tubes on a boiler can be caused by________ - (correct answer) -scale on
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tubes
hi
carbon dioxide in a condensate return system causes_________ - (correct answer) -
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channeling
a ________ pump is a positive displacement pump - (correct answer) -reciprocating
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a boiler generating 6000 lb of steam/hr produces _______btu/hr - (correct answer) -
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6,000,000
a bottom blowdown is performed on a boiler to _____ - (correct answer) -discharge
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sludge and sediment
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water columns are connected to the boiler with a minimum of _______" pipe - (correct
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answer) -1
hi hi
,the minimum size of a water column blowdown valve is_______". - (correct answer) -3/4
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the maximum size bottom blowdown valve on a boiler is_________". - (correct answer) -
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2 1/2hi
a ________ allows condensate to pass through, but stops Steam. - (correct answer) -a
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steam trap
hi hi
when taking over a shift, the first thing to do is check the________ - (correct answer) -
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water level in each boiler
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according to the asme code, a high-pressure boiler having more than 500 square feet of
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heating surface shall have________ - (correct answer) -two or more safety valves
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the probable cause of an increase in temperature of gases of combustion at the boiler
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Outlet is____ - (correct answer) -dirty heating services
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boilers in battery equipped with________ must have two main steam stop valves and a
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free-flowing drain between them - (correct answer) -manhole openings
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in order to be sure the gauge glass is indicating an accurate water level reading, the
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stationary engineer should______ - (correct answer) -blowdown the gauge glass
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a continuous blowdown line is located___ - (correct answer) -in the Steam and water
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drum well below the nowl
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a temperature reading of 80 degrees Celsius is equal to_________°f - (correct answer) -
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176
a chimney temperature of 250 degrees Fahrenheit above steam temperature
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indicates_______ - (correct answer) -poor efficiency
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a manometer is red in________ - (correct answer) -inches of water
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the boiling point of water will____ with an increase in pressure - (correct answer) -be
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raised
hi
if a lather is not obtained when performing a soap hardness test, the water sample
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is_______ - (correct answer) -hard
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combustion efficiency can be increased when air is________ - (correct answer) -
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preheated
______ draft is produced by a fan located between the boiler and the chimney - (correct
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answer) -induced
hi hi
, the overspeed trip on a steam turbine should be tested ______ - (correct answer) -
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before putting the steam turbine on-line hi hi hi hi hi
a high CO2 reading in the gases of combustion is a sign of____ - (correct answer) -High
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combustion efficiency
hi hi
the purpose of chemically treating feedwater is to________ - (correct answer) -turn
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scale-forming salts to a non adhering sludge
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water in a d rating feed water heater is prevented from entering the steam line by a(n)
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_______. - (correct answer) -Loop seal or internal overflow
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a steam turbine operating at 3600 RPM will trip at_________ rpm - (correct answer) -
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3960
he steam line going to The Blowers is connected to the main ________ - (correct
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answer) -steam drum
hi hi hi
before using blowers on a boiler,________ - (correct answer) -drain set blower lines
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an accumulation of snow on the Fireside of a boiler tubes________ - (correct answer) -
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decreases boiler efficiency hi hi
a globe valve installed in the feed water line between the feed water pump and boiler
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has a pressure from the feed water pump_________ the valve disc - (correct answer) -
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under
the range of a pressure gauge should be twice the safety valve setting, but not less
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than______ time (s) the safety valve setting - (correct answer) -1 1/2
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hard scale formed on the inside of tubes is best removed by________ - (correct answer)
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-air- or water-driven turbines
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to correct a low water condition,_____ - (correct answer) -secure fires
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desuperheater drain is used to_______ - (correct answer) -establish steam flow hi hi hi hi hi hi hi hi hi hi
a sudden rise in chimney temperature with no increase in load indicates______ -
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(correct answer) -there is a broken baffle
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the btu content of natural gas is_____ - (correct answer) -100,000 btu/therm
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the safety valve setting on the Steam and water drum is ________ a superheater safety
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valve - (correct answer) -higher than
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the btu content of number 6 fuel oil is approximately - (correct answer) -18750 BTU / lb
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and Answers
_________ are necessary for complete combustion - (correct answer) -time,
hi hi hi hi hi hi hi hi hi
temperature, mixture, and atomization
hi hi hi hi
if the steam pressure gauge indicates 200 PSIG, the absolute pressure is______ -
hi hi hi hi hi hi hi hi hi hi hi hi
(correct answer) -214.7
hi hi hi
a boiler is operating at 400 PSI, and the safety valve opens at 410 PSI and closes at 398
hi hi hi hi hi hi hi hi hi hi hi hi hi hi hi hi hi hi
PSI. The blowdown is______psi - (correct answer) -12
hi hi hi hi hi hi hi hi
an oil cooler is commonly used with a(n) ________ when operating in conjunction with a
hi hi hi hi hi hi hi hi hi hi hi hi hi hi
turbo-generator - (correct answer) -steam turbine
hi hi hi hi hi hi
a boiler is producing 40,000lb of steam/hr at a pressure of 100 PSI and a steam
hi hi hi hi hi hi hi hi hi hi hi hi hi hi hi
temperature of 500 degrees Fahrenheit. The steam produced is _______ steam -
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(correct answer) -superheated
hi hi hi
the economizer on a boiler is used to _______ - (correct answer) -add heat to the feed
hi hi hi hi hi hi hi hi hi hi hi hi hi hi hi hi
water
hi
blowers are normally used with________ boilers - (correct answer) -water tube
hi hi hi hi hi hi hi hi hi hi
overheating of tubes on a boiler can be caused by________ - (correct answer) -scale on
hi hi hi hi hi hi hi hi hi hi hi hi hi hi
tubes
hi
carbon dioxide in a condensate return system causes_________ - (correct answer) -
hi hi hi hi hi hi hi hi hi hi hi
channeling
a ________ pump is a positive displacement pump - (correct answer) -reciprocating
hi hi hi hi hi hi hi hi hi hi hi
a boiler generating 6000 lb of steam/hr produces _______btu/hr - (correct answer) -
hi hi hi hi hi hi hi hi hi hi hi hi
6,000,000
a bottom blowdown is performed on a boiler to _____ - (correct answer) -discharge
hi hi hi hi hi hi hi hi hi hi hi hi hi
sludge and sediment
hi hi hi
water columns are connected to the boiler with a minimum of _______" pipe - (correct
hi hi hi hi hi hi hi hi hi hi hi hi hi hi
answer) -1
hi hi
,the minimum size of a water column blowdown valve is_______". - (correct answer) -3/4
hi hi hi hi hi hi hi hi hi hi hi hi hi
the maximum size bottom blowdown valve on a boiler is_________". - (correct answer) -
hi hi hi hi hi hi hi hi hi hi hi hi hi
2 1/2hi
a ________ allows condensate to pass through, but stops Steam. - (correct answer) -a
hi hi hi hi hi hi hi hi hi hi hi hi hi
steam trap
hi hi
when taking over a shift, the first thing to do is check the________ - (correct answer) -
hi hi hi hi hi hi hi hi hi hi hi hi hi hi hi hi
water level in each boiler
hi hi hi hi
according to the asme code, a high-pressure boiler having more than 500 square feet of
hi hi hi hi hi hi hi hi hi hi hi hi hi hi
heating surface shall have________ - (correct answer) -two or more safety valves
hi hi hi hi hi hi hi hi hi hi hi hi
the probable cause of an increase in temperature of gases of combustion at the boiler
hi hi hi hi hi hi hi hi hi hi hi hi hi hi
Outlet is____ - (correct answer) -dirty heating services
hi hi hi hi hi hi hi hi
boilers in battery equipped with________ must have two main steam stop valves and a
hi hi hi hi hi hi hi hi hi hi hi hi hi
free-flowing drain between them - (correct answer) -manhole openings
hi hi hi hi hi hi hi hi hi
in order to be sure the gauge glass is indicating an accurate water level reading, the
hi hi hi hi hi hi hi hi hi hi hi hi hi hi hi
stationary engineer should______ - (correct answer) -blowdown the gauge glass
hi hi hi hi hi hi hi hi hi hi
a continuous blowdown line is located___ - (correct answer) -in the Steam and water
hi hi hi hi hi hi hi hi hi hi hi hi hi
drum well below the nowl
hi hi hi hi hi
a temperature reading of 80 degrees Celsius is equal to_________°f - (correct answer) -
hi hi hi hi hi hi hi hi hi hi hi hi hi
176
a chimney temperature of 250 degrees Fahrenheit above steam temperature
hi hi hi hi hi hi hi hi hi
indicates_______ - (correct answer) -poor efficiency
hi hi hi hi hi hi
a manometer is red in________ - (correct answer) -inches of water
hi hi hi hi hi hi hi hi hi hi
the boiling point of water will____ with an increase in pressure - (correct answer) -be
hi hi hi hi hi hi hi hi hi hi hi hi hi hi
raised
hi
if a lather is not obtained when performing a soap hardness test, the water sample
hi hi hi hi hi hi hi hi hi hi hi hi hi hi
is_______ - (correct answer) -hard
hi hi hi hi hi
combustion efficiency can be increased when air is________ - (correct answer) -
hi hi hi hi hi hi hi hi hi hi hi
preheated
______ draft is produced by a fan located between the boiler and the chimney - (correct
hi hi hi hi hi hi hi hi hi hi hi hi hi hi hi
answer) -induced
hi hi
, the overspeed trip on a steam turbine should be tested ______ - (correct answer) -
hi hi hi hi hi hi hi hi hi hi hi hi hi hi
before putting the steam turbine on-line hi hi hi hi hi
a high CO2 reading in the gases of combustion is a sign of____ - (correct answer) -High
hi hi hi hi hi hi hi hi hi hi hi hi hi hi hi hi
combustion efficiency
hi hi
the purpose of chemically treating feedwater is to________ - (correct answer) -turn
hi hi hi hi hi hi hi hi hi hi hi
scale-forming salts to a non adhering sludge
hi hi hi hi hi hi hi
water in a d rating feed water heater is prevented from entering the steam line by a(n)
hi hi hi hi hi hi hi hi hi hi hi hi hi hi hi hi
_______. - (correct answer) -Loop seal or internal overflow
hi hi hi hi hi hi hi hi hi
a steam turbine operating at 3600 RPM will trip at_________ rpm - (correct answer) -
hi hi hi hi hi hi hi hi hi hi hi hi hi hi
3960
he steam line going to The Blowers is connected to the main ________ - (correct
hi hi hi hi hi hi hi hi hi hi hi hi hi hi
answer) -steam drum
hi hi hi
before using blowers on a boiler,________ - (correct answer) -drain set blower lines
hi hi hi hi hi hi hi hi hi hi hi hi
an accumulation of snow on the Fireside of a boiler tubes________ - (correct answer) -
hi hi hi hi hi hi hi hi hi hi hi hi hi hi
decreases boiler efficiency hi hi
a globe valve installed in the feed water line between the feed water pump and boiler
hi hi hi hi hi hi hi hi hi hi hi hi hi hi hi
has a pressure from the feed water pump_________ the valve disc - (correct answer) -
hi hi hi hi hi hi hi hi hi hi hi hi hi hi hi
under
the range of a pressure gauge should be twice the safety valve setting, but not less
hi hi hi hi hi hi hi hi hi hi hi hi hi hi hi
than______ time (s) the safety valve setting - (correct answer) -1 1/2
hi hi hi hi hi hi hi hi hi hi hi hi
hard scale formed on the inside of tubes is best removed by________ - (correct answer)
hi hi hi hi hi hi hi hi hi hi hi hi hi hi
-air- or water-driven turbines
hi hi hi hi
to correct a low water condition,_____ - (correct answer) -secure fires
hi hi hi hi hi hi hi hi hi hi
desuperheater drain is used to_______ - (correct answer) -establish steam flow hi hi hi hi hi hi hi hi hi hi
a sudden rise in chimney temperature with no increase in load indicates______ -
hi hi hi hi hi hi hi hi hi hi hi hi
(correct answer) -there is a broken baffle
hi hi hi hi hi hi hi
the btu content of natural gas is_____ - (correct answer) -100,000 btu/therm
hi hi hi hi hi hi hi hi hi hi hi
the safety valve setting on the Steam and water drum is ________ a superheater safety
hi hi hi hi hi hi hi hi hi hi hi hi hi hi
valve - (correct answer) -higher than
hi hi hi hi hi hi
the btu content of number 6 fuel oil is approximately - (correct answer) -18750 BTU / lb
hi hi hi hi hi hi hi hi hi hi hi hi hi hi hi hi
