6The overall heat-transfer coefficient accounts for:AOnly convectionBOnly conductionCAll resistances between the two fluids, including the wall and foulingDOnly radiationView AnswerDiscussWorkspaceReportSaveEasy
7Critical radius of insulation for a cylinder is:A2k / hBh / kCk × hDk / hView AnswerDiscussWorkspaceReportSaveEasy
8Fouling in heat exchangers:AHas no effectBReduces pressure dropCReduces the overall heat-transfer coefficientDIncreases heat transferView AnswerDiscussWorkspaceReportSaveEasy
9Multiple-effect evaporators are used to:AMix solidsBIncrease pressureCCool liquidsDImprove steam economyView AnswerDiscussWorkspaceReportSaveEasy
10Thermal conductivity is highest for:AMetals such as copperBWoodCAirDGlass woolView AnswerDiscussWorkspaceReportSaveEasy