High pressure boilers quick Questions
and Answers Guide (already passed)
Latest 2025
Celsius to Fahrenheit formula - Correct Answers ✅°F =
°C(5/9) + 32
Fahrenheit to Celsius formula - Correct Answers ✅°C = (°F
- 32 ) x (5/ 9)
A ___ is a closed vessel used for heating water to generate
steam by direct application of heat from combustion fuels or
electricity. - Correct Answers ✅boiler
A ___ boiler is a boiler in which steam or other vapor is
generated at pressures exceeding 15 psi. - Correct Answers
✅power steam
A high pressure steam boiler is a boiler that operates at a
maximum allowable working pressure (MAWP) of more than
___ psi. - Correct Answers ✅15
When a steam boiler is operating at 100 pounds per square
inch gauge pressure (psig), the temperature of the water and
steam will be approximately ___°F. - Correct Answers ✅338
___ is the ratio of the heat absorbed by a boiler (output) to
the heat available in the fuel (input) including radiation and
convection losses. - Correct Answers ✅thermal efficiency
,High pressure boilers quick Questions
and Answers Guide (already passed)
Latest 2025
A ___ boiler is a firetube boiler with an internal furnace. -
Correct Answers ✅scotch marine
___ is the soft, muddy residue produced from impurities in
water that accumulates in low spots in a boiler. - Correct
Answers ✅sludge
___ is the pressure at which the density of water and steam
are the same. - Correct Answers ✅critical pressure
___ allow for circulation between the lower drum and the box
headers. - Correct Answers ✅downcomers
Common bent-tube boiler configurations include ___ styles. -
Correct Answers ✅A, D, and O
A ___ boiler is a watertube boiler in which replaceable
serpentine tubes are connected to the upper and lower
drums and surround the firebox. - Correct Answers ✅Flex-
tube
In resistance-coil electric boilers, electricity flows through a
___ conductor, which generates heat through resistance. -
Correct Answers ✅coiled
,High pressure boilers quick Questions
and Answers Guide (already passed)
Latest 2025
A ___ boiler is a boiler that uses the municipal solid waste
that would normally go to landfills - Correct Answers
✅refuse
Waste boilers can use the heat from the incineration of ___. -
Correct Answers ✅industrial by-products
A ___ does not require a burner to burn a fuel because the hot
gases already exist as waste from another process. - Correct
Answers ✅heat recovery steam generator
The ___ ensures that boilers and fittings are strong enough
and made of suitable materials that can withstand the
continuous stress of boiler operation. - Correct Answers
✅ASME code
Fire tubes in a firetube boiler are subjected to ___ stress. -
Correct Answers ✅compressive
___ stress occurs when two forces of equal intensity act on an
object, which pulls the object in opposite directions. - Correct
Answers ✅Tensile
, High pressure boilers quick Questions
and Answers Guide (already passed)
Latest 2025
Through stays are used to prevent ___ in boilers. - Correct
Answers ✅bulging
Standard boilers are about ___% efficient. - Correct Answers
✅80
A ___ is a set of tubes that is placed in the furnace area of
watertube boilers and used to increase the heating surface of
boilers and the service life of refractory. - Correct Answers
✅waterwall
Finned boiler tubes can be used to increase the ___ of the
boiler. - Correct Answers ✅heat transfer surface
A ___ boiler comes completely assembled with its own
pressure vessel, burner, draft fans, and fuel train. - Correct
Answers ✅package
___ are used to direct the gases of combustion so that they
come in close contact with the boiler heating surface. -
Correct Answers ✅baffles
___ are used to direct the gases of combustion so that they
come in close contact with the boiler heating surface. -
Correct Answers ✅outside diameters
and Answers Guide (already passed)
Latest 2025
Celsius to Fahrenheit formula - Correct Answers ✅°F =
°C(5/9) + 32
Fahrenheit to Celsius formula - Correct Answers ✅°C = (°F
- 32 ) x (5/ 9)
A ___ is a closed vessel used for heating water to generate
steam by direct application of heat from combustion fuels or
electricity. - Correct Answers ✅boiler
A ___ boiler is a boiler in which steam or other vapor is
generated at pressures exceeding 15 psi. - Correct Answers
✅power steam
A high pressure steam boiler is a boiler that operates at a
maximum allowable working pressure (MAWP) of more than
___ psi. - Correct Answers ✅15
When a steam boiler is operating at 100 pounds per square
inch gauge pressure (psig), the temperature of the water and
steam will be approximately ___°F. - Correct Answers ✅338
___ is the ratio of the heat absorbed by a boiler (output) to
the heat available in the fuel (input) including radiation and
convection losses. - Correct Answers ✅thermal efficiency
,High pressure boilers quick Questions
and Answers Guide (already passed)
Latest 2025
A ___ boiler is a firetube boiler with an internal furnace. -
Correct Answers ✅scotch marine
___ is the soft, muddy residue produced from impurities in
water that accumulates in low spots in a boiler. - Correct
Answers ✅sludge
___ is the pressure at which the density of water and steam
are the same. - Correct Answers ✅critical pressure
___ allow for circulation between the lower drum and the box
headers. - Correct Answers ✅downcomers
Common bent-tube boiler configurations include ___ styles. -
Correct Answers ✅A, D, and O
A ___ boiler is a watertube boiler in which replaceable
serpentine tubes are connected to the upper and lower
drums and surround the firebox. - Correct Answers ✅Flex-
tube
In resistance-coil electric boilers, electricity flows through a
___ conductor, which generates heat through resistance. -
Correct Answers ✅coiled
,High pressure boilers quick Questions
and Answers Guide (already passed)
Latest 2025
A ___ boiler is a boiler that uses the municipal solid waste
that would normally go to landfills - Correct Answers
✅refuse
Waste boilers can use the heat from the incineration of ___. -
Correct Answers ✅industrial by-products
A ___ does not require a burner to burn a fuel because the hot
gases already exist as waste from another process. - Correct
Answers ✅heat recovery steam generator
The ___ ensures that boilers and fittings are strong enough
and made of suitable materials that can withstand the
continuous stress of boiler operation. - Correct Answers
✅ASME code
Fire tubes in a firetube boiler are subjected to ___ stress. -
Correct Answers ✅compressive
___ stress occurs when two forces of equal intensity act on an
object, which pulls the object in opposite directions. - Correct
Answers ✅Tensile
, High pressure boilers quick Questions
and Answers Guide (already passed)
Latest 2025
Through stays are used to prevent ___ in boilers. - Correct
Answers ✅bulging
Standard boilers are about ___% efficient. - Correct Answers
✅80
A ___ is a set of tubes that is placed in the furnace area of
watertube boilers and used to increase the heating surface of
boilers and the service life of refractory. - Correct Answers
✅waterwall
Finned boiler tubes can be used to increase the ___ of the
boiler. - Correct Answers ✅heat transfer surface
A ___ boiler comes completely assembled with its own
pressure vessel, burner, draft fans, and fuel train. - Correct
Answers ✅package
___ are used to direct the gases of combustion so that they
come in close contact with the boiler heating surface. -
Correct Answers ✅baffles
___ are used to direct the gases of combustion so that they
come in close contact with the boiler heating surface. -
Correct Answers ✅outside diameters
