2
High Pressure Boilers Newest Edition Exam with verified detailed
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answers
A low Pressure steam boiler has a MAWP of _____ psi - ✔✔15
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The higher the steam pressure, the higher the ___ of the water in the boiler. - ✔✔boiling
|| || || || || || || || || || || || || || || || ||
point
___ is the amount of energy equal to the evaporation of 34.5 lb of water/hr from and at a
|| || || || || || || || || || || || || || || || || || ||
feedwater temp of 212F. - ✔✔boiler horsepower || || || || || ||
When a steam boiler is operating at 100 pounds per square inch gauge pressure (psig), the
|| || || || || || || || || || || || || || || ||
temp of the water and steam will be approx. ___F. - ✔✔338
|| || || || || || || || || || ||
A horizontal return tubular (HRT) boiler is a ___ boiler. - ✔✔firetube
|| || || || || || || || || || ||
As steam pressure in a boiler increases, there is a corresponding increase in the ___. -
|| || || || || || || || || || || || || || || ||
✔✔temperature
A sudden drop in pressure from 100 psig to 0 psig without a corresponding drop in
|| || || || || || || || || || || || || || || ||
temperature could results in a(n) ___. - ✔✔explosion || || || || || || ||
Water will boil and turn to steam when it reaches ___F at atmospheric pressure sea level. -
|| || || || || || || || || || || || || || || || ||
✔✔212
___ efficiency is the ratio of the heat absorbed by the boiler (output) to the heat available in
|| || || || || || || || || || || || || || || || || ||
the fuel (input). - ✔✔Thermal
|| || || ||
,2
Baffles are used to direct gases so that they come in close contact with the ___. - ✔✔boiler
|| || || || || || || || || || || || || || || || || ||
heating surface ||
___ Stress is stress that occurs when two forces of equal intensity act parallel to each other
|| || || || || || || || || || || || || || || || ||
but in opposite directions - ✔✔shear stress
|| || || || || ||
Some watertube boilers are equipped with ___ to increases the heating surface and the life
|| || || || || || || || || || || || || || ||
of the furnace refractory - ✔✔waterwalls
|| || || || ||
A disadvantage of a vertical firetube boiler is that is requires ___. - ✔✔a high ceiling
|| || || || || || || || || || || || || || ||
In a firetube boiler, the heat produced by gases of combustion ___. - ✔✔passes through the
|| || || || || || || || || || || || || || || ||
tubes
Watertube boilers were designed to operate at pressure as high as ___ psi, a point known as
|| || || || || || || || || || || || || || || || ||
the critical pressure of steam. - ✔✔3206
|| || || || || ||
A mud drum, if used, is the lowest part of the water side of a(n) ___ boiler. - ✔✔watertube
|| || || || || || || || || || || || || || || || || ||
A ___ boiler is a watertube boiler in which replaceable serpentine tubes are connected to
|| || || || || || || || || || || || || || ||
the upper and lower drums and surround the firebox. - ✔✔flex-tube
|| || || || || || || || || ||
In electrode electric boilers, heat is generated by electric current flowing from one electrode
|| || || || || || || || || || || || || ||
to another electrode through the ___. - ✔✔boiler water
|| || || || || || || ||
A high pressure steam boiler operates at a steam pressure over ___ psi. - ✔✔15
|| || || || || || || || || || || || || ||
A condensing economizer recovers ___ Btu/lb from the heat in the water vapor. - ✔✔970
|| || || || || || || || || || || || || ||
, 2
Boiler tubes are manufactured using materials that meet ___ specifications. - ✔✔ASME
|| || || || || || || || || || ||
In a watertube boiler, the heated water inside the tubes becomes ___, causing it to rise. -
|| || || || || || || || || || || || || || || || ||
✔✔less dense ||
Cogeneration produces ___ for use in a process or heating. - ✔✔hot water || || || || || || || || || || || ||
A ___ is a device that converts mechanical energy into electrical energy by means of
|| || || || || || || || || || || || || || ||
electromagnetic induction. - ✔✔generator || || ||
___ is used to support and protect electrical conductors. - ✔✔Conduit
|| || || || || || || || || ||
if the boiler is generating 20,000 lb/hr of steam, it must be supplied with ________ lb/hr of
|| || || || || || || || || || || || || || || || ||
feedwater - ✔✔20,000 || ||
from the deaerator, oxygen and other noncondensable gases are separated from the
|| || || || || || || || || || || ||
feedwater and directed to the atmosphere _________ - ✔✔though the vent
|| || || || || || || || || ||
a(n) ___________ system is a system of measuring instruments and controllers that work
|| || || || || || || || || || || || ||
together to control a process - ✔✔control || || || || || ||
one pound of water is needed to produce ________ of steam - ✔✔1 lb
|| || || || || || || || || || || || ||
in a low-pressure gas system, the ________ valve is an electric valve that cannot be opened
|| || || || || || || || || || || || || || || ||
until the gas pilot is lit - ✔✔manual reset
|| || || || || || || ||
High Pressure Boilers Newest Edition Exam with verified detailed
|| || || || || || || || ||
answers
A low Pressure steam boiler has a MAWP of _____ psi - ✔✔15
|| || || || || || || || || || || ||
The higher the steam pressure, the higher the ___ of the water in the boiler. - ✔✔boiling
|| || || || || || || || || || || || || || || || ||
point
___ is the amount of energy equal to the evaporation of 34.5 lb of water/hr from and at a
|| || || || || || || || || || || || || || || || || || ||
feedwater temp of 212F. - ✔✔boiler horsepower || || || || || ||
When a steam boiler is operating at 100 pounds per square inch gauge pressure (psig), the
|| || || || || || || || || || || || || || || ||
temp of the water and steam will be approx. ___F. - ✔✔338
|| || || || || || || || || || ||
A horizontal return tubular (HRT) boiler is a ___ boiler. - ✔✔firetube
|| || || || || || || || || || ||
As steam pressure in a boiler increases, there is a corresponding increase in the ___. -
|| || || || || || || || || || || || || || || ||
✔✔temperature
A sudden drop in pressure from 100 psig to 0 psig without a corresponding drop in
|| || || || || || || || || || || || || || || ||
temperature could results in a(n) ___. - ✔✔explosion || || || || || || ||
Water will boil and turn to steam when it reaches ___F at atmospheric pressure sea level. -
|| || || || || || || || || || || || || || || || ||
✔✔212
___ efficiency is the ratio of the heat absorbed by the boiler (output) to the heat available in
|| || || || || || || || || || || || || || || || || ||
the fuel (input). - ✔✔Thermal
|| || || ||
,2
Baffles are used to direct gases so that they come in close contact with the ___. - ✔✔boiler
|| || || || || || || || || || || || || || || || || ||
heating surface ||
___ Stress is stress that occurs when two forces of equal intensity act parallel to each other
|| || || || || || || || || || || || || || || || ||
but in opposite directions - ✔✔shear stress
|| || || || || ||
Some watertube boilers are equipped with ___ to increases the heating surface and the life
|| || || || || || || || || || || || || || ||
of the furnace refractory - ✔✔waterwalls
|| || || || ||
A disadvantage of a vertical firetube boiler is that is requires ___. - ✔✔a high ceiling
|| || || || || || || || || || || || || || ||
In a firetube boiler, the heat produced by gases of combustion ___. - ✔✔passes through the
|| || || || || || || || || || || || || || || ||
tubes
Watertube boilers were designed to operate at pressure as high as ___ psi, a point known as
|| || || || || || || || || || || || || || || || ||
the critical pressure of steam. - ✔✔3206
|| || || || || ||
A mud drum, if used, is the lowest part of the water side of a(n) ___ boiler. - ✔✔watertube
|| || || || || || || || || || || || || || || || || ||
A ___ boiler is a watertube boiler in which replaceable serpentine tubes are connected to
|| || || || || || || || || || || || || || ||
the upper and lower drums and surround the firebox. - ✔✔flex-tube
|| || || || || || || || || ||
In electrode electric boilers, heat is generated by electric current flowing from one electrode
|| || || || || || || || || || || || || ||
to another electrode through the ___. - ✔✔boiler water
|| || || || || || || ||
A high pressure steam boiler operates at a steam pressure over ___ psi. - ✔✔15
|| || || || || || || || || || || || || ||
A condensing economizer recovers ___ Btu/lb from the heat in the water vapor. - ✔✔970
|| || || || || || || || || || || || || ||
, 2
Boiler tubes are manufactured using materials that meet ___ specifications. - ✔✔ASME
|| || || || || || || || || || ||
In a watertube boiler, the heated water inside the tubes becomes ___, causing it to rise. -
|| || || || || || || || || || || || || || || || ||
✔✔less dense ||
Cogeneration produces ___ for use in a process or heating. - ✔✔hot water || || || || || || || || || || || ||
A ___ is a device that converts mechanical energy into electrical energy by means of
|| || || || || || || || || || || || || || ||
electromagnetic induction. - ✔✔generator || || ||
___ is used to support and protect electrical conductors. - ✔✔Conduit
|| || || || || || || || || ||
if the boiler is generating 20,000 lb/hr of steam, it must be supplied with ________ lb/hr of
|| || || || || || || || || || || || || || || || ||
feedwater - ✔✔20,000 || ||
from the deaerator, oxygen and other noncondensable gases are separated from the
|| || || || || || || || || || || ||
feedwater and directed to the atmosphere _________ - ✔✔though the vent
|| || || || || || || || || ||
a(n) ___________ system is a system of measuring instruments and controllers that work
|| || || || || || || || || || || || ||
together to control a process - ✔✔control || || || || || ||
one pound of water is needed to produce ________ of steam - ✔✔1 lb
|| || || || || || || || || || || || ||
in a low-pressure gas system, the ________ valve is an electric valve that cannot be opened
|| || || || || || || || || || || || || || || ||
until the gas pilot is lit - ✔✔manual reset
|| || || || || || || ||
