Civil Engineering MCQs

Page No. 144

When surface of transpiration is submerged under water, then potential evapotranspiration is________________?


a much more than evapotranspiration


b much less than evapotranspiration


cequal to evapotranspiration


d equal to or less than evapotranspi-ration



The runoff increases with________________?


a increase in intensity of rain


b increase in infiltration capacity


c increase in permeability of soil


d all of the above



A current meter is used to measure the__________________?


avelocity of flow of water


bdepth of flow of water


cdischarge


d none of the above



The rainfall on five successive days were measured as 100 mm, 80 mm, 60 mm, 40 mm and 20 mm respectively. If the infiltration index or the storm loss rate for the catchment area is earlier estimated as 50 mm/day, the total surface run off will be________________?


a 50 mm


b 60 mm


c90 mm


d140 mm


View Answer 90 mm

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 unit hydrograph of a specified duration can be used to evaluate the hydrograph of storms of_________________?


asame duration only


b same and shorter duration


c same and longer duration


dany duration


View Answer any duration

The relation between probability (P) and recurrence interval (T) is given by_________________?


a PT = 1


b PT2 = 1


c P/T = 1


dP/T2 = 1


View Answer PT = 1

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


cT= Vkd


d k= VTd


View Answer T = kd

A deep well_________________?


a is always deeper than a shallow well


bhas more discharge than a shallow well


c is weaker structurally than a shallow well


dboth (A) and (B)



The useful storage is the volume of water stored in the reservoir between________________?


aminimum pool level and maximum pool level


b minimum pool level and normal pool level


cnormal pool level and maximum pool level


driver bed and minimum pool level



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