The Hydrograph Tutorial - Page 1
1.What is time lag ?

  1. o : Difference between centre of mass of rainfall and centre of mass of hydrograph
  2. o : Difference between cessation of rainfall and start of runoff
  3. o : Difference between start of runoff and runoff peak
  4. o : None of the above

2.What is rising limb ?

  1. o : from start of hydrograph upto peak value attained
  2. o : from peak value to minimum value attained
  3. o : the starting limb of hyetograph
  4. o : the finishing limb of hyetograph

3.What is crest segment of hydrograph ?

  1. o : crest segment hold the peak value attained by the runoff
  2. o : crest segment is a straight line drawn between start and end of a hydrograph
  3. o : crest segment hold the minimum value attained by the hydrograph
  4. o : crest segment represent the inflection point of rising and recession limb of a hydrograph

4.What is falling limb or deplition curve ?

  1. o : the base of hydrograph
  2. o : from peak to end of hydrograph
  3. o : from start to middle of hydrograph
  4. o : the end of the hydrograph

5.What is hydrograph ?

  1. o : the curve showing relationship between excess rainfall and time
  2. o : the curve showing relationship between rainfall and time
  3. o : the response of catchment to a storm event
  4. 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 ?

  1. o : occurrence of the peak runoff
  2. o : shape of the hydrograph
  3. o : occurrence of the peak and shape of the hydrograph
  4. o : none of the above

7.High peak and narrow shaped hydrograph can be observed in :

  1. o : fan shaped or semi-circular catchments
  2. o : elongated catchment
  3. o : catchment skewed to the right
  4. o : none of the above
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