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3rd class stationary steam engineer license prep Questions and Answers

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3rd class stationary steam engineer license prep Questions and Answers

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  • November 2, 2024
  • 16
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
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Wisdoms
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
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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
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the economizer on a boiler is used to _______ - (correct answer) -add heat to the feed
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water
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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
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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
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,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
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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
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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
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, 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
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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
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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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