21. Which of the following is a non-recording raingauge ?
A. tipping bucket type raingauge
B. Simon’s raingauge
C. Steven’s weighing type raingauge
D. floating type raingauge
✅ The correct answer is option B.
Irrigation, Water Resources Engineering and Hydrology MCQs
22. For the upstream face of an earthen dam, the most adverse condition for stability of slope is_______________?
A. sudden drawdown
B. steady seepage
C. during construction
D. sloughing of slope
✅ The correct answer is option A.
23. Which of the following types of rain gauges is used for measuring rain in remote hilly inaccessible areas ?
A. tipping bucket type
B. weighing type
C. floating type
D. Simon’s raingauge
✅ The correct answer is option A.
24. The minimum size of stone that will remain at rest in a channel of longitudinal slope S and hydraulic mean depth R is given by______________?
A. 4RS
B. 11 RS
C. 7RS
D. 15 RS
✅ The correct answer is option B.
25. The unit hydrograph due to a storm may be obtained by dividing the ordinates of the direct runoff hydrograph by_______________?
A. direct runoff volume
B. period of storm
C. total rainfall
D. none of the above
✅ The correct answer is option A.
26. An aggrading river is a_________________?
A. silting river
B. scouring river
C. both silting and scouring river
D. neither silting nor scouring river
✅ The correct answer is option A.
27. The best unit duration of storm for a unit hydrograph is________________?
A. 1 hour
B. one-fourth of basin lag
C. one-half of basin lag
D. equal to basin lag
✅ The correct answer is option B.
28. If d is the depth of the aquifer through which water is flowing, then the relationship between permeability k and transmissible T is given by_______________?
A. T = kd
B. T = k/d
C. T= Vkd
D. k= VTd
✅ The correct answer is option A.
29. The net head under which the turbine reaches its peak efficiency at synchronous speed is called________________?
A. design head
B. rated head
C. gross head
D. operating head
✅ The correct answer is option A.
30. A multipurpose reservoir is the one which is_________________?
A. designed for one purpose but serves more than one purpose
B. planned and constructed to serve various purposes
C. both (A. and (B.
D. none of the above
✅ The correct answer is option B.