STATIONARY ENGINEER FINAL
COMPREHENSIVE STUDY GUIDE 2026 FULL
QUESTIONS AND SOLUTIONS GRADED A+
◍ Condensation.
Answer: CondensationThe process by which a gas is changed into a liquid at
constant temperature by heat removal.
◍ Enthalpy.
Answer: For a given sample of air, a measure of the total heat content (the
sum of the heat energy of the dry air and heat energy of the water vapor
within it). It is typically used to determine the amount of fresh outside air
that can be added to recirculated air for the lowest cooling cost.
◍ PRV.
Answer: PRESSURE RELIEVE VALVE
◍ Cl2.
Answer: Chlorine
◍ The steam pressure gauge should be located where?.
Answer: At the highest point of the steam side.
◍ Bituminous.
Answer: Soft, high volatility content
◍ EXPANSION JOINT.
Answer: The joint to permit movement due to expansion without undue
stress.
◍ DAMPER.
Answer: - A device for introducing a variable pressure drop in a system used
for regulating the volumetric flow of a gas, such as air.
,◍ An air heater uses _____ to heat the air.
Answer: floo gas
◍ CARBON.
Answer: Element. The principal combustible constituent of all fuels.
◍ COMPLETE COMBUSTION.
Answer: The complete oxidation of all the combustible constituents of a
fuel.
◍ 3 Condenser Types.
Answer: air-cooled condensers, water-cooled condensers, and evaporative
condensers. The evaporative condenser uses a combination of air and water
as its condensing medium. Most residential systems have an air-cooled
condenser.
◍ Zoning.
Answer: ZoningThe practice of providing independent heating and/or
cooling to different areas in a structure. Zoning typically utilizes a system
controller, zoning dampers controlled by a thermostat in each zone, and a
bypass damper to regulate static pressure in the supply duct.
◍ If you double the temp of a gas the volume does what?.
Answer: doubles
◍ Primary aor.
Answer: controls the rate of combustion
◍ A balanced draft is controlled by the.
Answer: outlet damper
◍ CALORIMETER.
Answer: Apparatus for determining the calorific value of a fuel.
◍ CONTROL VALVE.
Answer: A valve used to control the flow of air, gas, water, steam or other
substance.
, ◍ Condensate is treated to get rid of what?.
Answer: carbonic acid
◍ FEED PUMP.
Answer: A pump that supplies water to a boiler.
◍ BDC.
Answer: Bottom Dead Center
◍ Forced mechanical draft.
Answer: fans blow
◍ Absolute pressure (PSIA)=.
Answer: Gauge Pressure (PSIG)+Atomic Pressure (14.7PSI)
◍ If a safety device (switch,ect) is in a safe position then it is.
Answer: Normally closed
◍ Cavitation.
Answer: Is the formation and collapse of vapor bubbles in a pump, which
results in vibration and noise
◍ Induced mechanical draft.
Answer: fans suck
◍ CHEMICAL FEED PIPE.
Answer: A pipe inside a boiler drum through which chemicals for treating
the boiler water are introduced.
◍ A vapor stat is a low _____ _____.
Answer: pressure switch
◍ ASME.
Answer: American Society of Mechanical Engineers
◍ BLOWDOWN.
Answer: Boiler water that is removed from the boiler in order to maintain
the desired concentration levels of suspended and dissolved solids in the
boiler and removal of sludge.
COMPREHENSIVE STUDY GUIDE 2026 FULL
QUESTIONS AND SOLUTIONS GRADED A+
◍ Condensation.
Answer: CondensationThe process by which a gas is changed into a liquid at
constant temperature by heat removal.
◍ Enthalpy.
Answer: For a given sample of air, a measure of the total heat content (the
sum of the heat energy of the dry air and heat energy of the water vapor
within it). It is typically used to determine the amount of fresh outside air
that can be added to recirculated air for the lowest cooling cost.
◍ PRV.
Answer: PRESSURE RELIEVE VALVE
◍ Cl2.
Answer: Chlorine
◍ The steam pressure gauge should be located where?.
Answer: At the highest point of the steam side.
◍ Bituminous.
Answer: Soft, high volatility content
◍ EXPANSION JOINT.
Answer: The joint to permit movement due to expansion without undue
stress.
◍ DAMPER.
Answer: - A device for introducing a variable pressure drop in a system used
for regulating the volumetric flow of a gas, such as air.
,◍ An air heater uses _____ to heat the air.
Answer: floo gas
◍ CARBON.
Answer: Element. The principal combustible constituent of all fuels.
◍ COMPLETE COMBUSTION.
Answer: The complete oxidation of all the combustible constituents of a
fuel.
◍ 3 Condenser Types.
Answer: air-cooled condensers, water-cooled condensers, and evaporative
condensers. The evaporative condenser uses a combination of air and water
as its condensing medium. Most residential systems have an air-cooled
condenser.
◍ Zoning.
Answer: ZoningThe practice of providing independent heating and/or
cooling to different areas in a structure. Zoning typically utilizes a system
controller, zoning dampers controlled by a thermostat in each zone, and a
bypass damper to regulate static pressure in the supply duct.
◍ If you double the temp of a gas the volume does what?.
Answer: doubles
◍ Primary aor.
Answer: controls the rate of combustion
◍ A balanced draft is controlled by the.
Answer: outlet damper
◍ CALORIMETER.
Answer: Apparatus for determining the calorific value of a fuel.
◍ CONTROL VALVE.
Answer: A valve used to control the flow of air, gas, water, steam or other
substance.
, ◍ Condensate is treated to get rid of what?.
Answer: carbonic acid
◍ FEED PUMP.
Answer: A pump that supplies water to a boiler.
◍ BDC.
Answer: Bottom Dead Center
◍ Forced mechanical draft.
Answer: fans blow
◍ Absolute pressure (PSIA)=.
Answer: Gauge Pressure (PSIG)+Atomic Pressure (14.7PSI)
◍ If a safety device (switch,ect) is in a safe position then it is.
Answer: Normally closed
◍ Cavitation.
Answer: Is the formation and collapse of vapor bubbles in a pump, which
results in vibration and noise
◍ Induced mechanical draft.
Answer: fans suck
◍ CHEMICAL FEED PIPE.
Answer: A pipe inside a boiler drum through which chemicals for treating
the boiler water are introduced.
◍ A vapor stat is a low _____ _____.
Answer: pressure switch
◍ ASME.
Answer: American Society of Mechanical Engineers
◍ BLOWDOWN.
Answer: Boiler water that is removed from the boiler in order to maintain
the desired concentration levels of suspended and dissolved solids in the
boiler and removal of sludge.
