The Hydrograph Tutorial - Page 1
1.What is time lag ?
- o : Difference between centre of mass of rainfall and centre of mass of hydrograph
- o : Difference between cessation of rainfall and start of runoff
- o : Difference between start of runoff and runoff peak
- o : None of the above
2.What is rising limb ?
- o : from start of hydrograph upto peak value attained
- o : from peak value to minimum value attained
- o : the starting limb of hyetograph
- o : the finishing limb of hyetograph
3.What is crest segment of hydrograph ?
- o : crest segment hold the peak value attained by the runoff
- o : crest segment is a straight line drawn between start and end of a hydrograph
- o : crest segment hold the minimum value attained by the hydrograph
- o : crest segment represent the inflection point of rising and recession limb of a hydrograph
4.What is falling limb or deplition curve ?
- o : the base of hydrograph
- o : from peak to end of hydrograph
- o : from start to middle of hydrograph
- o : the end of the hydrograph
5.What is hydrograph ?
- o : the curve showing relationship between excess rainfall and time
- o : the curve showing relationship between rainfall and time
- o : the response of catchment to a storm event
- o : the curve showing the relationship between runoff and rainfall
6.Which two characteristic of hydrographs are effected due to change in shape of the catchment ?
- o : occurrence of the peak runoff
- o : shape of the hydrograph
- o : occurrence of the peak and shape of the hydrograph
- o : none of the above
7.High peak and narrow shaped hydrograph can be observed in :
- o : fan shaped or semi-circular catchments
- o : elongated catchment
- o : catchment skewed to the right
- o : none of the above