Questions and
Answers
Updated 2026
EnclosingBhoodB-BAnswerBSurroundsBcontaminant,BpreventsBfromBescaping
BackdraftBhoodB-BAnswerBDrawsBairBawayBfromBBZBtowardsBequipBrear
RotatingBvaneBanemometerB-BAnswerBPaintBsprayBboothBopening
ShakeBoutBhoodBbafflesB-BAnswerBProvideBbetterBairBdistribution
DoubleBduct'sBairflowB-BAnswerBFrictionBlossBquadruples
BlastBgatesB-BAnswerBBalanceBresistanceBtoBairflowBinBducts
DilutionBventilationB-BAnswerBUsedBforBlowBtoxicityBvapors
ReynoldsBnumberB-BAnswerBDescribesBflowB(turbulentBorBlaminar)BinBaBduct
>4000BReB-BAnswerBTurbulent
, <4000BReB-BAnswerBLaminar
CriticalBorificeB-BAnswerBplateBMeasuresBflowBinsideBduct
SlotBhoodB-BAnswerBLocalBexhaustBelectroplatingBtank
CentralBvacuumB-BAnswerBRemovesBmaterial/aerosolsBfromBtheBarea
GeneralBventilationB-BAnswerBNotBforBparticulateBorBtoxicBgases/vapors
HoodBstaticBpressureB-BAnswerBEnergyBnecessaryBtoBmoveBandBaccelerateBair
50BfpmB-BAnswerBPossibleBfaceBvelocityBdueBtoBnaturalBfactors
BalanceBwithBblastBgateB-BAnswerBBranchesBofBductBbalanceBdifferentialB>0.1
DetermineBvariationBinBfanBspeedB-BAnswerBFanBsize,BductBsystemB&BairBdensity
GreatestBcaptureBvelocityB-BAnswerBNeededBforBgrindingBoperations
PitotBtraverseB-BAnswerBSystematicBequalBareaBvelocityBmeasurements
InBIHBairBisBconsideredB-BAnswerBAnBincompressibleBfluid
CanopyBhoodsB-BAnswerBAllowBcontaminantBtoBpassBthroughBworker'sBbreathingBzone
RoundBductsBareB______BthanBsquareBductsB-BAnswerBStronger