3RD CLASS STATIONARY STEAM ENGINEER LICENSE PREP QUESTIONS AND ANSWERS
2025
_________ are necessary for complete combustion - (ANSWER)time, temperature, mixture, and
atomization
if the steam pressure gauge indicates 200 PSIG, the absolute pressure is______ - (ANSWER)214.7
a boiler is operating at 400 PSI, and the safety valve opens at 410 PSI and closes at 398 PSI. The
blowdown is______psi - (ANSWER)12
an oil cooler is commonly used with a(n) ________ when operating in conjunction with a turbo-
generator - (ANSWER)steam turbine
a boiler is producing 40,000lb of steam/hr at a pressure of 100 PSI and a steam temperature of 500
degrees Fahrenheit. The steam produced is _______ steam - (ANSWER)superheated
the economizer on a boiler is used to _______ - (ANSWER)add heat to the feed water
blowers are normally used with________ boilers - (ANSWER)water tube
overheating of tubes on a boiler can be caused by________ - (ANSWER)scale on tubes
carbon dioxide in a condensate return system causes_________ - (ANSWER)channeling
a ________ pump is a positive displacement pump - (ANSWER)reciprocating
a boiler generating 6000 lb of steam/hr produces _______btu/hr - (ANSWER)6,000,000
a bottom blowdown is performed on a boiler to _____ - (ANSWER)discharge sludge and sediment
water columns are connected to the boiler with a minimum of _______" pipe - (ANSWER)1
,3RD CLASS STATIONARY STEAM ENGINEER LICENSE PREP QUESTIONS AND ANSWERS
2025
the minimum size of a water column blowdown valve is_______". - (ANSWER)3/4
the maximum size bottom blowdown valve on a boiler is_________". - (ANSWER)2 1/2
a ________ allows condensate to pass through, but stops Steam. - (ANSWER)a steam trap
when taking over a shift, the first thing to do is check the________ - (ANSWER)water level in each boiler
according to the asme code, a high-pressure boiler having more than 500 square feet of heating surface
shall have________ - (ANSWER)two or more safety valves
the probable cause of an increase in temperature of gases of combustion at the boiler Outlet is____ -
(ANSWER)dirty heating services
boilers in battery equipped with________ must have two main steam stop valves and a free-flowing
drain between them - (ANSWER)manhole openings
in order to be sure the gauge glass is indicating an accurate water level reading, the stationary engineer
should______ - (ANSWER)blowdown the gauge glass
a continuous blowdown line is located___ - (ANSWER)in the Steam and water drum well below the nowl
a temperature reading of 80 degrees Celsius is equal to_________°f - (ANSWER)176
a chimney temperature of 250 degrees Fahrenheit above steam temperature indicates_______ -
(ANSWER)poor efficiency
a manometer is red in________ - (ANSWER)inches of water
, 3RD CLASS STATIONARY STEAM ENGINEER LICENSE PREP QUESTIONS AND ANSWERS
2025
the boiling point of water will____ with an increase in pressure - (ANSWER)be raised
if a lather is not obtained when performing a soap hardness test, the water sample is_______ -
(ANSWER)hard
combustion efficiency can be increased when air is________ - (ANSWER)preheated
______ draft is produced by a fan located between the boiler and the chimney - (ANSWER)induced
the overspeed trip on a steam turbine should be tested ______ - (ANSWER)before putting the steam
turbine on-line
a high CO2 reading in the gases of combustion is a sign of____ - (ANSWER)High combustion efficiency
the purpose of chemically treating feedwater is to________ - (ANSWER)turn scale-forming salts to a non
adhering sludge
water in a d rating feed water heater is prevented from entering the steam line by a(n) _______. -
(ANSWER)Loop seal or internal overflow
a steam turbine operating at 3600 RPM will trip at_________ rpm - (ANSWER)3960
he steam line going to The Blowers is connected to the main ________ - (ANSWER)steam drum
before using blowers on a boiler,________ - (ANSWER)drain set blower lines
an accumulation of snow on the Fireside of a boiler tubes________ - (ANSWER)decreases boiler
efficiency
2025
_________ are necessary for complete combustion - (ANSWER)time, temperature, mixture, and
atomization
if the steam pressure gauge indicates 200 PSIG, the absolute pressure is______ - (ANSWER)214.7
a boiler is operating at 400 PSI, and the safety valve opens at 410 PSI and closes at 398 PSI. The
blowdown is______psi - (ANSWER)12
an oil cooler is commonly used with a(n) ________ when operating in conjunction with a turbo-
generator - (ANSWER)steam turbine
a boiler is producing 40,000lb of steam/hr at a pressure of 100 PSI and a steam temperature of 500
degrees Fahrenheit. The steam produced is _______ steam - (ANSWER)superheated
the economizer on a boiler is used to _______ - (ANSWER)add heat to the feed water
blowers are normally used with________ boilers - (ANSWER)water tube
overheating of tubes on a boiler can be caused by________ - (ANSWER)scale on tubes
carbon dioxide in a condensate return system causes_________ - (ANSWER)channeling
a ________ pump is a positive displacement pump - (ANSWER)reciprocating
a boiler generating 6000 lb of steam/hr produces _______btu/hr - (ANSWER)6,000,000
a bottom blowdown is performed on a boiler to _____ - (ANSWER)discharge sludge and sediment
water columns are connected to the boiler with a minimum of _______" pipe - (ANSWER)1
,3RD CLASS STATIONARY STEAM ENGINEER LICENSE PREP QUESTIONS AND ANSWERS
2025
the minimum size of a water column blowdown valve is_______". - (ANSWER)3/4
the maximum size bottom blowdown valve on a boiler is_________". - (ANSWER)2 1/2
a ________ allows condensate to pass through, but stops Steam. - (ANSWER)a steam trap
when taking over a shift, the first thing to do is check the________ - (ANSWER)water level in each boiler
according to the asme code, a high-pressure boiler having more than 500 square feet of heating surface
shall have________ - (ANSWER)two or more safety valves
the probable cause of an increase in temperature of gases of combustion at the boiler Outlet is____ -
(ANSWER)dirty heating services
boilers in battery equipped with________ must have two main steam stop valves and a free-flowing
drain between them - (ANSWER)manhole openings
in order to be sure the gauge glass is indicating an accurate water level reading, the stationary engineer
should______ - (ANSWER)blowdown the gauge glass
a continuous blowdown line is located___ - (ANSWER)in the Steam and water drum well below the nowl
a temperature reading of 80 degrees Celsius is equal to_________°f - (ANSWER)176
a chimney temperature of 250 degrees Fahrenheit above steam temperature indicates_______ -
(ANSWER)poor efficiency
a manometer is red in________ - (ANSWER)inches of water
, 3RD CLASS STATIONARY STEAM ENGINEER LICENSE PREP QUESTIONS AND ANSWERS
2025
the boiling point of water will____ with an increase in pressure - (ANSWER)be raised
if a lather is not obtained when performing a soap hardness test, the water sample is_______ -
(ANSWER)hard
combustion efficiency can be increased when air is________ - (ANSWER)preheated
______ draft is produced by a fan located between the boiler and the chimney - (ANSWER)induced
the overspeed trip on a steam turbine should be tested ______ - (ANSWER)before putting the steam
turbine on-line
a high CO2 reading in the gases of combustion is a sign of____ - (ANSWER)High combustion efficiency
the purpose of chemically treating feedwater is to________ - (ANSWER)turn scale-forming salts to a non
adhering sludge
water in a d rating feed water heater is prevented from entering the steam line by a(n) _______. -
(ANSWER)Loop seal or internal overflow
a steam turbine operating at 3600 RPM will trip at_________ rpm - (ANSWER)3960
he steam line going to The Blowers is connected to the main ________ - (ANSWER)steam drum
before using blowers on a boiler,________ - (ANSWER)drain set blower lines
an accumulation of snow on the Fireside of a boiler tubes________ - (ANSWER)decreases boiler
efficiency
