16Manning's formula is used for flow in:APipes under pressure onlyBSoilsCOpen channelsDPumpsView AnswerDiscussWorkspaceReportSaveEasy
17Water flows in a rectangular channel 4 m wide and 1 m deep at 2 m/s. The discharge is:A8 m³/sB6 m³/sC4 m³/sD2 m³/sView AnswerDiscussWorkspaceReportSaveMedium
18Chezy's formula for velocity is:AV = C × R × SBV = R / SCV = C / √(RS)DV = C√(RS)View AnswerDiscussWorkspaceReportSaveEasy