11Cavitation in pumps is caused by:AHigh temperature onlyBAir leaks onlyCLocal pressure falling below the liquid's vapour pressureDExcess speed onlyView AnswerDiscussWorkspaceReportSaveEasy
12A reaction turbine uses:ABoth pressure and kinetic energy of waterBOnly kinetic energyCOnly heatDWind energyView AnswerDiscussWorkspaceReportSaveEasy
13A Pelton wheel's maximum efficiency occurs when the bucket speed is about what fraction of the jet speed?A1.0B0.5C0.25D2.0View AnswerDiscussWorkspaceReportSaveMedium
14Multistage centrifugal pumps are used to:AReduce flow to zeroBPump airCHandle very low heads onlyDDevelop high headsView AnswerDiscussWorkspaceReportSaveEasy
15Slip in a reciprocating pump is:AThe difference between theoretical and actual dischargeBPressure headCBlade angleDRotation speedView AnswerDiscussWorkspaceReportSaveEasy