MD Stationary Engineer Exam Latest
Edition 2025-2026. Questions &
Correct Answers. Graded A
A boiler horsepower is defined as - ANSThe Evaporation of 34.5 pounds of
water per hour and at feed water temp of 212 degrees
Adirect cause oh overheating of the boiler tubes is..... - ANSScale
formation on the tubes
Air needed for combustion of fuel is made up of approximately _________
% oxygen and ________ nitrogen - ANS20, 80
AUTOMATIC NONRETURN VALVE - ANSValve located on the steam line
closest to the shell of the boiler that cuts the boiler in on the line and off-line
automatically. This valve also protects the system in the event of a large
steam leak on any boiler.
Bituminous coal has a high ______ content - ANSVolatile
Boil the water must be conditioned to prevent ______ (3 Answers) -
ANSFormation of scale, oxygen pitting, carryover
Boiler tubes are sized using the - ANSoutside diameter
1
, Carbon dioxide ( CO2) in the flue gas indicates.... - ANSComplete
combustion
Carbon Dioxide in the flue has is a sign of what kind of combustion? -
ANSComplete
Carbon monoxide (CO) in the flue gas indicates ______ - ANSincomplete
combustion
Compressor does what? - ANSChanges low pressure gas to a high
pressure liquid
Deposits of calcium and magnesium carbonates on the boiler heating
surface cause___ - ANSscale
Flow meters measure the rate of flow of.... - ANSA variety of fluids
Gases of Combustion that cool on Contact with the boiler heating Surface
before combushion is completed Cause a(n) _________ - ANSFormation
of soot and smoke
Gauge pressure plus atmospheric pressure equals what? - ANSAbsolute
pressure
Grade refers to the ___ of a coal - ANSsize, heating value, and ash content
2
Edition 2025-2026. Questions &
Correct Answers. Graded A
A boiler horsepower is defined as - ANSThe Evaporation of 34.5 pounds of
water per hour and at feed water temp of 212 degrees
Adirect cause oh overheating of the boiler tubes is..... - ANSScale
formation on the tubes
Air needed for combustion of fuel is made up of approximately _________
% oxygen and ________ nitrogen - ANS20, 80
AUTOMATIC NONRETURN VALVE - ANSValve located on the steam line
closest to the shell of the boiler that cuts the boiler in on the line and off-line
automatically. This valve also protects the system in the event of a large
steam leak on any boiler.
Bituminous coal has a high ______ content - ANSVolatile
Boil the water must be conditioned to prevent ______ (3 Answers) -
ANSFormation of scale, oxygen pitting, carryover
Boiler tubes are sized using the - ANSoutside diameter
1
, Carbon dioxide ( CO2) in the flue gas indicates.... - ANSComplete
combustion
Carbon Dioxide in the flue has is a sign of what kind of combustion? -
ANSComplete
Carbon monoxide (CO) in the flue gas indicates ______ - ANSincomplete
combustion
Compressor does what? - ANSChanges low pressure gas to a high
pressure liquid
Deposits of calcium and magnesium carbonates on the boiler heating
surface cause___ - ANSscale
Flow meters measure the rate of flow of.... - ANSA variety of fluids
Gases of Combustion that cool on Contact with the boiler heating Surface
before combushion is completed Cause a(n) _________ - ANSFormation
of soot and smoke
Gauge pressure plus atmospheric pressure equals what? - ANSAbsolute
pressure
Grade refers to the ___ of a coal - ANSsize, heating value, and ash content
2
