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RD
CLASS STATIONARY STEAM ENGINEER
LICENSE EXAM PREP WITH CORRECT
ACTUAL QUESTIONS AND CORRECTLY
WELL DEFINED ANSWERS LATEST 2024 –
2025 ALREADY GRADED A+
a glass is used to ______ - ANSWERS-indicate the water level in the boiler
before using soap blowers, it is necessary to______ - ANSWERS-open the steam line on the soot blower
safety valve repair should be done by the________ - ANSWERS-safety valve manufacturer or an authorized representative
an oil cooler is commonly used with a(n) ________ when operating in conjunction with a turbo-generator - ANSWERS-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 - ANSWERS-superheated
_________ are necessary for complete combustion - ANSWERS-time, temperature, mixture, and atomization
if the steam pressure gauge indicates 200 PSIG, the absolute pressure is______ - ANSWERS-214.
a boiler is operating at 400 PSI, and the safety valve opens at 410 PSI and closes at 398 PSI. The blowdown is______psi - ANSWERS-
the economizer on a boiler is used to _______ - ANSWERS-add heat to the feed water
blowers are normally used with________ boilers - ANSWERS-water tube
overheating of tubes on a boiler can be caused by________ - ANSWERS-scale on tubes
carbon dioxide in a condensate return system causes_________ - ANSWERS- channeling
the probable cause of an increase in temperature of gases of combustion at the boiler Outlet is____ - ANSWERS-dirty heating services
boilers in battery equipped with________ must have two main steam stop valves and a free-flowing drain between them - ANSWERS-manhole openings
in order to be sure the gauge glass is indicating an accurate water level reading, the stationary engineer should______ - ANSWERS-blowdown the gauge glass
a continuous blowdown line is located___ - ANSWERS-in the Steam and water drum well below the nowl
a temperature reading of 80 degrees Celsius is equal to_________°f - ANSWERS- 176
a chimney temperature of 250 degrees Fahrenheit above steam temperature indicates_______ - ANSWERS-poor efficiency
a manometer is red in________ - ANSWERS-inches of water
the boiling point of water will____ with an increase in pressure - ANSWERS-be raised
if a lather is not obtained when performing a soap hardness test, the water sample is_______ - ANSWERS-hard
combustion efficiency can be increased when air is________ - ANSWERS- preheated
______ draft is produced by a fan located between the boiler and the chimney - ANSWERS-induced
the overspeed trip on a steam turbine should be tested ______ - ANSWERS- before putting the steam turbine on-line
a high CO2 reading in the gases of combustion is a sign of____ - ANSWERS-High combustion efficiency
the purpose of chemically treating feedwater is to________ - ANSWERS-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) _______. - ANSWERS-Loop seal or internal overflow
a steam turbine operating at 3600 RPM will trip at_________ rpm - ANSWERS- 3960
the btu content of natural gas is_____ - ANSWERS-100,000 btu/therm
the safety valve setting on the Steam and water drum is ________ a superheater safety valve - ANSWERS-higher than
the btu content of number 6 fuel oil is approximately - ANSWERS-18750 BTU / lb
chemicals can be added to a boiler by a______pump - ANSWERS-proportioning
the feed water stop valve is found between the____ - ANSWERS-boiler and check valve
sensible heat is______ - ANSWERS-heat that can be measured with a thermometer
balanced draft is______ - ANSWERS-constant furnace pressure slightly below atmospheric pressure
a flame rod_______ - ANSWERS-ensures that the gas pilot is lighted
there are approximately_____btu in 1 cu ft of Natural Gas - ANSWERS-
the pH of boiler water may be controlled by using ______ - ANSWERS-caustic soda
boiler water with a pH of 11 is________ - ANSWERS-alkaline
a scotch Marine boiler is easily identified because it_____ - ANSWERS-has a cylindrical internal furnace
the air flow switch at the burner fan housing________ - ANSWERS-and shows the primary air fan is functioning
the asme code recommends that low water fuel cutoff switch be tested by an evaporation test__________ - ANSWERS-monthly
a neutral solution is_______ on the pH scale - ANSWERS-
a dry pipe separator _____ - ANSWERS-delivers higher-quality steam to the header
draft is carefully controlled to_____ - ANSWERS-completely burn fuel supplied to the burner
draft is measured with a_________ - ANSWERS-manometer
to check the water level on a boiler online, it is best to_____ - ANSWERS- blowdown the gauge glass
a steam pressure gauge has a siphon between the boiler and the pressure gauge to _______ - ANSWERS-prevent Steam from entering the pressure gauge
if a boiler evaporates 50,000 lbs of steam/hour and is evaporating 10 pounds of steam/sq ft of heating surface, the heating surface of the boiler is ____sq ft - ANSWERS-
oxygen in feed water causes ______ - ANSWERS-pitting
it is permissible to have one blowdown valve on a boiler operated under______ psi - ANSWERS-
at atmospheric pressure, water boils and turns to steam at _____ °f - ANSWERS- 212
a steam pressure gauge is protected against excessive temperature by a ______ - ANSWERS-siphon
the only type of safety valve allowed on a boiler by the asme code is a_____ safety valve - ANSWERS-spring-loaded pop
the primary function of a boiler is to _____ - ANSWERS-generate steam efficiently
if the burner is firing and no water is in the gauge glass, the best procedure to follow is to_______ - ANSWERS-shut down the burner and secure the boiler
a high pressure boiler operates at a pressure above______ PSI and 6 BHP - ANSWERS-
a safety valve on a boiler pops______ - ANSWERS-between working pressure and mawp
in a fire tube boiler, the Heat and gases of combustion pass _________ - ANSWERS-through the tubes
as steam pressure in a boiler increases, there is a corresponding increase in the ______ - ANSWERS-temperature of steam and water
the safety valve on a boiler _____ - ANSWERS-prevents the boiler from exceeding its mawp
a steam trap ______ - ANSWERS-automatically remove sand and water without loss of steam
package boilers are programmed to _____ - ANSWERS-ignite the burner in low fire
there are________ sq ft of heating surface in a water tube 3 1/2" in diameter and 20' long - ANSWERS-18.
to change 1 lb of water from and at212 °f into steam at atmospheric pressure,______ btu are necessary - ANSWERS-970.
a surface condenser is one that______ - ANSWERS-has circulating water flowing through the tubes and exhaust steam around the outside of the tubes
a boiler is rated at 30,000 lb/hr and has a 5% blow down loss. The minimum size feed water pump to supply this boiler is ________ gal./hr. - ANSWERS-
three types of draft used in power plants are______ - ANSWERS-natural, forest, and induced
in a water tube boiler, heat and gases of combustion pass______ - ANSWERS- around the tubes
when the burner is in high fire, the______ - ANSWERS-air-fuel ratio is at maximum rate
a boiler with a draft gauge showing a positive pressure indicates_____ - ANSWERS-furnace pressure is above atmospheric pressure
downcomer tubes are found _____ - ANSWERS-in a water tube boiler
a boiler connected in battery requires a free blowing drain between the two stop valves when the ______ - ANSWERS-boiler has a manhole opening
most furnace explosions are caused by _____ - ANSWERS-failure to purge the furnace at startup
baffles in the boiler are designed to direct gases of combustion for close contact with the ________ - ANSWERS-boiler heating surface
the overspeed tripping device on a steam turbine must be tripped when____ - ANSWERS-shutting down the steam turbine
one gallon of no. 6 fuel oil weighs approximately _______ lb. - ANSWERS-8.
three types of boiler feed water pumps are _____ - ANSWERS-reciprocating, centrifugal, and turbine
the most important fitting on a boiler is the______ - ANSWERS-safety valve
a water tube boiler has 250 tubes that are 20 ft long and 3" in diameter. if the boiler produces one BHP for every 10 sq ft of heating surface, the maximum BHP it will produce is________ BHP - ANSWERS-
during a boiler inspection, the main steam stop valves are _______ - ANSWERS- closed, locked, and tagged
when a quick opening valve is used as a blowdown valve, it is located ______ - ANSWERS-between the boiler and slow opening valve
listing lovers on safety valves are used to_____ - ANSWERS-manually test valves
the frequency of performing a bottom blowdown is determined by ______ - ANSWERS-boiler Water Analysis
normally a water column and gauge glass should be blown down _____ - ANSWERS-at the start of a shift in whenever and out of the water level
a thermostatic trap opens when the____ - ANSWERS-the Bellows contract
an economizer located in the path of the gases of combustion increased boiler efficiency approximately 1% for each ___°f rise in feed water temperature - ANSWERS-
the purpose of a vent on the open feedwater heater is to _____ - ANSWERS- remove oxygen and non condensable gases
steam pressure gauges are calibrated in____ - ANSWERS-pounds per square inch
bottom blowdown lines are located______ - ANSWERS-at the lowest part of the water side of the boiler
sewer lines are protected from pressure and temperature by the _______ when blowing down a boiler - ANSWERS-blowdown tank
the upper connection to a gauge glasses closed. If the boiler has a normal water level, the level on the gauge glass will show _______ glass - ANSWERS-full
combustion controls on a boiler are used to _____ - ANSWERS-control the air fuel ratio
ceiling strips that warned of excessive radial tolerance are found on_____ - ANSWERS-steam turbines
pre-purge, air to fuel ratio, and post Purge of the burner are functions of the _______ - ANSWERS-combustion controls
the most controllable heat loss in a boiler is from the loss of heat in______ - ANSWERS-gases of combustion
on the feed water line, the valve closest to the boiler shell is a _____ valve - ANSWERS-stop
four basic systems found on boilers are ______< - ANSWERS-steam, feed water, fuel, and draft
if a low-water condition occurs, the operator should first _______ - ANSWERS- secure the burners
a pressure control on a boiler is used to. _______ - ANSWERS-control the operating range of the boiler
sup blowers are most commonly found ______ - ANSWERS-on water tube boilers
a duplex reciprocating feed water pump operates on the principle that the _______ - ANSWERS-steam piston area must be 2 to 2 1/2 times larger than the water piston
when testing the safety valve by hand, it is the accepted practice to have. _________ - ANSWERS-at least 75% popping pressure before testing
oxygen in a boiler drum causes. ________ - ANSWERS-pitting
__________ steam turbines allow condensate to be reclaimed for use in the system - ANSWERS-condensing
with water at a temperature of 212°f, 1 bhp is equivalent to the evaporation of 34.5 lb of water every ________ hour(s) - ANSWERS-
in a closed feedwater heater, the _________ - ANSWERS-Steam and water do not mix
sensible heat is heat that ______ - ANSWERS-changes the temperature of a substance but not its state
when performing a hydrostatic test on a boiler, the safety valve must be. ________ - ANSWERS-removed from the boiler and the opening blank or gagged
if repairs are to be made on a safety valve, they must be made by the. _______/ - ANSWERS-manufacturer of the safety valve or authorized representative
the proper way to stop a steam turbine when taking it off line is to _______ - ANSWERS-trip the over speed device by hand
