DC BOILER EXAM ACTUAL EXAM COMPLETE 240 QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED A+||ALREADY GRADED A+

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DC BOILER EXAM ACTUAL EXAM COMPLETE 240 QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED A+||ALREADY GRADED A+

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Institution DC BOILER

Course DC BOILER

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DC BOILER EXAM ACTUAL EXAM COMPLETE 240 QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED A+||ALREADY GRADED A+

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DC BOILER EXAM 2024-2025 ACTUAL EXAM
COMPLETE 240 QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS) |
ALREADY GRADED A+||ALREADY GRADED A+

Movingxbladingxinxwhichxspacexbetweenxbladesxisxthexsamexsizexatxthexbladingxinlet,xandxthexbladingx
outlet.x-xANSWERxImpulsexBlading

Toxblowdownxaxboilerxequippedxwithxaxquickxopeningxandxslowxopeningxvalvexonxthexbottomxblowdo
wnxline,xthe_________.x-xANSWERxquickxopeningxvalvexisxopenedxfirstxandxclosedxlast.

Hardnessxofxwaterxisxthexmeasurementxinxppmxofx________xandx________xinxthexwater.x-
xANSWERxcalciumxandxmagnesium

Axpumpxdeliversx175xgallonsxperxminutexagainstxaxpressurexofx55xpsi;xthexsuctionxpressurexisx15xpsi.xIf
xaxpumpxisx80%xefficient,xwhatxisxthexhorsepowerxneeded?x-
xANSWERxHP=5.1xHP=x(HeadxinxFeet)xxx(WeightxinxLbs.)/x33,000xxxEfficiency

axduplexxdouble-actingxreciprocatingxfeedxwaterxpumpxhas____x-
xANSWERxtwoxsteamxPistonsx2xtox2x2/2xtimesxlargerxinxareaxthanxthexwaterxpiston

Namexaxtechniquextoxcontrolxthexnitrousxoxidexemissions.x-xANSWERxSelectivexCatalyticxReduction

Spallingxinxaxboilerxoccursxinxthex____?x-xANSWERxCombustionxchamber

Axtechnologyxinxwhichxsolidxwastexisxheatedxinxanxoxygenxstarvedxatmospherextoxbreakxdownxthexsoli
dsxintoxaxgasxisxcalledx______?x-xANSWERxPyrolysis

, Whatxisxthexprimaryxpurposexofxusingxwetxscrubbers?x-xANSWERxToxremovexsulfurxdioxides

Thexthermalxefficiencyxofxaxboilerxwithxaxstackxtemperaturexofx750°Fxandxandxaxfurnacextemperaturex
ofx3200°Fxis_______?x-xANSWERx75%x((3200-750)/3200)xxx100

________isxaxwater-
purificationxprocessxinxwhichxthexwaterxtoxbextreatedxisxpressurizedxandxappliedxagainstxthexsurfacexof
xaxsemipermeablexmembrane.x-xANSWERxReversexosmosis

Thexairflowxswitchxatxthexburnerxfanxhousing______.x-
xANSWERxEnsuresxthexprimaryxairxfanxisxfunctioning

Howxmanyxinchesxofxsteamxspacexinxaxcylinderxofxanxenginex12"x28"xandxthexstrokexisx5/8xofxitsxfullxtr
avel?x-xANSWERx1978.xV=AxLxV=3.14(6x6)x28x.625=x1978

Whatxisxthexhorsepowerxrequirementxofxaxpumpxthatxmovesx2500xgpmxofxwaterxagainstxaxheadxofx47
5'xifxthexpumpxisxoperatingxatx58%xefficiency?x-xANSWERx516.8xHP=HeadxxxWeight/
33000xxxefficiency.x(Headx=475,xWeightx=x2500gpmxxx8.33)x(475xx20825)/19140

Ax______xisxthexconditionxthatxisxbeingxcontrolledx-xANSWERxprocessxvariable

Althoughxboilerxtubesxandxboilerxdrumsxwithstandxthexsamexpressure,xthexwallsxofxthexboilerxtubesxar
exmuchxthinnerxbecausex______.x-xANSWERxThextubesxarexmuchxsmallerxinxdiameter

Axleadxsulfidexcellxdetects_____.x-xANSWERxBurnerxpilotxandxmainxflame

WhichxofxthexfollowingxindicatesxaxmalfunctionxinxthexDCxheater?
x1.xThexboilerxrequiresxexcessivexamountsxofxoxygenxabsorbingxchemicals.

2.WaterxandxsteamxarexenteringxthexDCxheaterxatxthexsamextemperature.x-xANSWERxBothx1x&x2

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Uploaded on: September 26, 2024
Number of pages: 11
Written in: 2024/2025
Type: Exam (elaborations)
Contains: Questions & answers

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DC BOILER EXAM ACTUAL EXAM COMPLETE 240 QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED A+||ALREADY GRADED A+

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