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Exam (elaborations)

high pressure boilers final exam with answers

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  • Course
  • High Pressure Steam
  • Institution
  • High Pressure Steam

high pressure boilers final exam with answers

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  • November 9, 2024
  • 10
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • High Pressure Steam
  • High Pressure Steam
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Fordenken
high pressure boilers final exam with answers

a low pressure steam boiler operates at a pressure of not more than _____ psi - ** VERIFIED
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 - ** VERIFIED ANSWERS
**✔✔338



a horizontal return tubular (HRT) boiler is a _____ boiler - ** VERIFIED ANSWERS **✔✔firetube



a sudden drop in pressure from 100 psig to 0 psig without a corresponding drop in temperature could
result in an ______ - ** VERIFIED ANSWERS **✔✔explosion



______ efficiency is the ratio of the heat absorbed by a boiler (output) to the heat available in the fuel
(input) - ** VERIFIED ANSWERS **✔✔thermal



baffles are used to direct gases so that they come in close contact with the _____ - ** VERIFIED
ANSWERS **✔✔boiler heating surface



a mud drum, if used, is the lowest part of the water side of a(n) _____ boiler. - ** VERIFIED
ANSWERS **✔✔watertube



according to ASME Code, a high pressure steam boiler operates at a steam pressure higher than
_____ psi - ** VERIFIED ANSWERS **✔✔15



in a watertube boiler, the heated water inside the tubes becomes ______, causing it to rise - **
VERIFIED ANSWERS **✔✔less dense



a _____ is a device that converts mechanical energy into electrical energy by means of
electromagnetic induction - ** VERIFIED ANSWERS **✔✔generator

, if a boiler is generating 20,000 lb/hr of steam, it must be supplied with _____ lb/hr of feedwater - **
VERIFIED ANSWERS **✔✔20,000



from the deaerator, oxygen and other noncondensable gases are separated form the feedwater and
directed to the atmosphere _____ - ** VERIFIED ANSWERS **✔✔through the vent



one pound of water is needed to produce ______ of steam - ** VERIFIED ANSWERS **✔✔1 lb



_____ are used for loads that require dry steam, such as turbines - ** VERIFIED ANSWERS
**✔✔superheaters



in a feedwater system, the _____ valve is located closest to the shell of the boiler on the feedwater
line so that the check valve can be repaired without draining (dumping) the boiler - ** VERIFIED
ANSWERS **✔✔stop



in a fuel oil system, the purpose of duplex strainers is to ______ - ** VERIFIED ANSWERS
**✔✔permit one strainer to be cleaned while the other is in service



the deaerator tank is located _____ - ** VERIFIED ANSWERS **✔✔above the feedwater pumps



no. _____ fuel oil needs to be heated before it is pumped so that it can flow - ** VERIFIED
ANSWERS **✔✔6



pulverized coal is ground into a fine powder and blown into the combustion chamber where it is
burned in a ______ - ** VERIFIED ANSWERS **✔✔suspension



water weighs approximately _____ lb/gal - ** VERIFIED ANSWERS **✔✔8.3



to prevent failure from pressure over the MAWP, all steam boilers must be equipped with at least one
_____ - ** VERIFIED ANSWERS **✔✔safety valve

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