Zusammenfassung der Ressource
Frage 1
Frage
Field erected boilers have outputs of?
Antworten
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75000 kg/h
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100000kg/h
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100mg/h
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150000kg/h or more
Frage 2
Frage
Feed-water entering the boiler section first passes through the ________ section where it is heated by the combustion gases leaving the boiler.
Antworten
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furnace
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economizer
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boiler drum
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superheater
Frage 3
Frage
Where electric power is used as the heating source, the boiler rating shall be the maximum kilowatt rating of the:
Antworten
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power plant
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heating element
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Boiler wiring
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MCC
Frage 4
Frage
Generally two types of draft fans are used. A ____ ___ fan supplies air to the air preheater. The preheated air for combustion goes to the coal pulverizers and to the burners. An ______ ___ fan exhausts the combustion gases from the air heater to the stack.
Antworten
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center mounted, external mounted
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forced draft, induced draft
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induced draft, forced draft
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turbine draft, ejection draft
Frage 5
Frage
The arrangement of a once through boiler has no drums. The feed water is heated and then evaporated and superheated in _____ _____ through the unit.
Antworten
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Two passes
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One passage
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3 passes
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4 passes
Frage 6
Frage
The main advantage of the packaged boiler is its
Antworten
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small size
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compact design
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low cost
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quality steam
Frage 7
Frage
Packaged watertube boilers capacities range from?
Frage 8
Frage
The advantage of forced circulation in a boiler for a _______ flow in all tubes
Antworten
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negative
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greater
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positive
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mass
Frage 9
Frage
The steam separating equipment separates the _____ from the steam/water mixture
Antworten
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water
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steam
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impurities
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water droplets
Frage 10
Frage
These types of boilers (A,D, and O) have furnaces cooled by _____ lining the furnace walls
Antworten
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watertubes
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fans
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desuperheaters
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air circulation