1|Page
3rd class stationary steam engineer license Actual
Exam Newest 2026-2027 Complete 200 Questions And
Correct Detailed Answers| Already Graded A+
after replacing a gauge glass but before placing it in service, it is
necessary to ______ - ANSWER-crack open the steam valve in
warm the gauge glass
two bottom blowdown valves are required on boilers operating
at pressures above______ psi - ANSWER-100
extra heavy steel pipe is required on a boiler bottom blowdown
line when the pressure is above ____ psi - ANSWER-125
package boilers are programmed to _____ - ANSWER-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 - ANSWER-18.32
,2|Page
to change 1 lb of water from and at212 °f into steam at
atmospheric pressure,______ btu are necessary - ANSWER-
970.3
a surface condenser is one that______ - ANSWER-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. - ANSWER-3795
three types of draft used in power plants are______ - ANSWER-
natural, forest, and induced
in a water tube boiler, heat and gases of combustion pass______
- ANSWER-around the tubes
when the burner is in high fire, the______ - ANSWER-air-fuel
ratio is at maximum rate
,3|Page
a boiler with a draft gauge showing a positive pressure
indicates_____ - ANSWER-furnace pressure is above
atmospheric pressure
downcomer tubes are found _____ - ANSWER-in a water tube
boiler
a boiler connected in battery requires a free blowing drain
between the two stop valves when the ______ - ANSWER-
boiler has a manhole opening
most furnace explosions are caused by _____ - ANSWER-
failure to purge the furnace at startup
baffles in the boiler are designed to direct gases of combustion
for close contact with the ________ - ANSWER-boiler heating
surface
the overspeed tripping device on a steam turbine must be tripped
when____ - ANSWER-shutting down the steam turbine
one gallon of no. 6 fuel oil weighs approximately _______ lb. -
ANSWER-8.2
, 4|Page
three types of boiler feed water pumps are _____ - ANSWER-
reciprocating, centrifugal, and turbine
the most important fitting on a boiler is the______ - ANSWER-
safety valve
viscosity of fuel oil is a________ - ANSWER-measure of
internal resistance to flow
boiler water treatment is required to____ - ANSWER-prevent
scale formation on eating surfaces
the safety valve______ - ANSWER-prevents the boiler from
exceeding its mawp
try cocks I used to________ - ANSWER-as a secondary means
to determine water level
a glass is used to ______ - ANSWER-indicate the water level in
the boiler
3rd class stationary steam engineer license Actual
Exam Newest 2026-2027 Complete 200 Questions And
Correct Detailed Answers| Already Graded A+
after replacing a gauge glass but before placing it in service, it is
necessary to ______ - ANSWER-crack open the steam valve in
warm the gauge glass
two bottom blowdown valves are required on boilers operating
at pressures above______ psi - ANSWER-100
extra heavy steel pipe is required on a boiler bottom blowdown
line when the pressure is above ____ psi - ANSWER-125
package boilers are programmed to _____ - ANSWER-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 - ANSWER-18.32
,2|Page
to change 1 lb of water from and at212 °f into steam at
atmospheric pressure,______ btu are necessary - ANSWER-
970.3
a surface condenser is one that______ - ANSWER-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. - ANSWER-3795
three types of draft used in power plants are______ - ANSWER-
natural, forest, and induced
in a water tube boiler, heat and gases of combustion pass______
- ANSWER-around the tubes
when the burner is in high fire, the______ - ANSWER-air-fuel
ratio is at maximum rate
,3|Page
a boiler with a draft gauge showing a positive pressure
indicates_____ - ANSWER-furnace pressure is above
atmospheric pressure
downcomer tubes are found _____ - ANSWER-in a water tube
boiler
a boiler connected in battery requires a free blowing drain
between the two stop valves when the ______ - ANSWER-
boiler has a manhole opening
most furnace explosions are caused by _____ - ANSWER-
failure to purge the furnace at startup
baffles in the boiler are designed to direct gases of combustion
for close contact with the ________ - ANSWER-boiler heating
surface
the overspeed tripping device on a steam turbine must be tripped
when____ - ANSWER-shutting down the steam turbine
one gallon of no. 6 fuel oil weighs approximately _______ lb. -
ANSWER-8.2
, 4|Page
three types of boiler feed water pumps are _____ - ANSWER-
reciprocating, centrifugal, and turbine
the most important fitting on a boiler is the______ - ANSWER-
safety valve
viscosity of fuel oil is a________ - ANSWER-measure of
internal resistance to flow
boiler water treatment is required to____ - ANSWER-prevent
scale formation on eating surfaces
the safety valve______ - ANSWER-prevents the boiler from
exceeding its mawp
try cocks I used to________ - ANSWER-as a secondary means
to determine water level
a glass is used to ______ - ANSWER-indicate the water level in
the boiler
