1|Page
3RD CLASS STATIONARY STEAM ENGINEER LICENSE EXAM LATEST
2026-2027 ACTUAL EXAM WITH COMPLETE QUESTIONS AND
CORRECT DETAILED ANSWERS (100% VERIFIED ANSWERS)
|ALREADY GRADED A+| ||PROFESSOR VERIFIED|| ||BRANDNEW!!!||
In a fire tube boiler, the heat and gases of combustion pass as
steam pressure in a boiler. - ANSWER-through the tubes
As steam pressure in a boiler increases, there is a corresponding
increase in the _________________________ - ANSWER-Steam
and Water Temperature
The safety valve on a boiler prevents
_______________________. - ANSWER-the boiler from
exceeding its mawp
A steam trap . - ANSWER-automatically removes sand and water
without loss of steam
The amount of excess air in gases of combustion is normally
determined by the analysis of ___________. - ANSWER-02
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Before lighting off a boiler during a cold startup, the operator must
first check for ______________________. - ANSWER-the correct
water level
A boiler should be warmed up slowly when starting up to allow . -
ANSWER-uniform expansion of drums and tubes
Combustion requires - ANSWER-fuel, oxygen, and heat.
The three most common fuels used in boilers are - ANSWER-gas,
fuel oil, and coal.
Incomplete combustion can be caused by - ANSWER-insufficient
air.
After replacing a gauge glass - ANSWER-crack open the steam
valve to warm the gauge glass before placing it in service.
Two bottom blowdown valves are required on boilers operating at
pressures above - ANSWER-100 psi.
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Package boilers are programmed to ignite the burner in low fire. -
ANSWER-Package Boilers
Extra heavy steel pipe is required on a boiler bottom blowdown
line when the pressure is above - ANSWER-125 psi.
To change 1 lb of water from ________and at 212 °F into steam
at atmospheric pressure, ________BTU are necessary. -
ANSWER-970.3
A surface condenser is one that has - ANSWER-circulating water
flowing through the tubes and exhaust steam around the outside
of the tubes.
A boiler rated at 30,000 lb/hr and has a 5% blow down loss
requires a minimum size feed water pump to supply this boiler
of_______________. - ANSWER-3795 gal/hr
, 4|Page
In a __________ boiler, heat and gases of combustion pass
around the tubes. - ANSWER-Water Tube
The three types of draft used in power plants are
________________. - ANSWER-Natrual, Forced, Induced
When the burner is in high fire____________ - ANSWER-air-fuel
ratio is at maximum rate
A boiler with a draft gauge showing a positive pressure indicates
that the_____________________________. - ANSWER-furnace
pressure is above atmospheric pressure.
Downcomer tubes Are Found______________ - ANSWER-water
tube boiler
A boiler connected in battery requires a free blowing drain
between the two stop valves when the boiler has a - ANSWER-
manhole opening.
3RD CLASS STATIONARY STEAM ENGINEER LICENSE EXAM LATEST
2026-2027 ACTUAL EXAM WITH COMPLETE QUESTIONS AND
CORRECT DETAILED ANSWERS (100% VERIFIED ANSWERS)
|ALREADY GRADED A+| ||PROFESSOR VERIFIED|| ||BRANDNEW!!!||
In a fire tube boiler, the heat and gases of combustion pass as
steam pressure in a boiler. - ANSWER-through the tubes
As steam pressure in a boiler increases, there is a corresponding
increase in the _________________________ - ANSWER-Steam
and Water Temperature
The safety valve on a boiler prevents
_______________________. - ANSWER-the boiler from
exceeding its mawp
A steam trap . - ANSWER-automatically removes sand and water
without loss of steam
The amount of excess air in gases of combustion is normally
determined by the analysis of ___________. - ANSWER-02
,2|Page
Before lighting off a boiler during a cold startup, the operator must
first check for ______________________. - ANSWER-the correct
water level
A boiler should be warmed up slowly when starting up to allow . -
ANSWER-uniform expansion of drums and tubes
Combustion requires - ANSWER-fuel, oxygen, and heat.
The three most common fuels used in boilers are - ANSWER-gas,
fuel oil, and coal.
Incomplete combustion can be caused by - ANSWER-insufficient
air.
After replacing a gauge glass - ANSWER-crack open the steam
valve to warm the gauge glass before placing it in service.
Two bottom blowdown valves are required on boilers operating at
pressures above - ANSWER-100 psi.
,3|Page
Package boilers are programmed to ignite the burner in low fire. -
ANSWER-Package Boilers
Extra heavy steel pipe is required on a boiler bottom blowdown
line when the pressure is above - ANSWER-125 psi.
To change 1 lb of water from ________and at 212 °F into steam
at atmospheric pressure, ________BTU are necessary. -
ANSWER-970.3
A surface condenser is one that has - ANSWER-circulating water
flowing through the tubes and exhaust steam around the outside
of the tubes.
A boiler rated at 30,000 lb/hr and has a 5% blow down loss
requires a minimum size feed water pump to supply this boiler
of_______________. - ANSWER-3795 gal/hr
, 4|Page
In a __________ boiler, heat and gases of combustion pass
around the tubes. - ANSWER-Water Tube
The three types of draft used in power plants are
________________. - ANSWER-Natrual, Forced, Induced
When the burner is in high fire____________ - ANSWER-air-fuel
ratio is at maximum rate
A boiler with a draft gauge showing a positive pressure indicates
that the_____________________________. - ANSWER-furnace
pressure is above atmospheric pressure.
Downcomer tubes Are Found______________ - ANSWER-water
tube boiler
A boiler connected in battery requires a free blowing drain
between the two stop valves when the boiler has a - ANSWER-
manhole opening.
