11Water flows in a rectangular channel 4 m wide and 1 m deep at 2 m/s. The discharge is:A8 m³/sB2 m³/sC4 m³/sD6 m³/sView AnswerDiscussWorkspaceReportSaveMedium
12Pipes in series carry:ADifferent dischargesBThe same discharge, with total head loss equal to the sum of lossesCZero head lossDEqual velocity alwaysView AnswerDiscussWorkspaceReportSaveEasy
13Hydraulic radius is:AArea of flow ÷ wetted perimeterBVelocity ÷ depthCWetted perimeter ÷ areaDDepth ÷ widthView AnswerDiscussWorkspaceReportSaveEasy
14Specific energy in open channel flow is:AVelocity onlyBDepth + velocity head (y + V²/2g)CDatum head onlyDPressure head onlyView AnswerDiscussWorkspaceReportSaveEasy
15The most economical rectangular channel section has width equal to:AFour times the depthBThe depthCTwice the depthDHalf the depthView AnswerDiscussWorkspaceReportSaveEasy