1) The major resisting force in a gravity dam is___________________? a. water pressure b. wave pressure c. self-weight of dam d. uplift pressure
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2) Horizontal acceleration due to earthquake results in______________? a. hydrodynamic pressure b. inertia force into the body of the dam c. both (A) and (B) d. none of the above
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3) The uplift pressure on a dam can be controlled by_________________?
1) constructing cutoff under upstream face 2) constructing drainage channels bet-ween the dam and its foundation 3) by pressure grouting in foundation The corret answer is? a. only (1) b. both (1) and (2) c. both (1) and (3) d. (1), (2) and (3)
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4) The total capacity of a reservoir is 25 million cubic metres and dead storage is 5 million cubic metres. If the average volume of sediment deposition is 0.10 million cubic metre per year, then the usefulness of the reservoir will start reducing after_________________? a. 50 years b. 150 years c. 200 years d. 250 years
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5) For a flood control reservoir, the effective storage is equal to_______________? a. useful storage – valley storage b. useful storage + surcharge storage c. useful storage + surcharge storage + valley storage d. useful storage + surcharge storage -valley storage
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6) The useful storage is the volume of water stored in the reservoir between________________? a. minimum pool level and maximum pool level b. minimum pool level and normal pool level c. normal pool level and maximum pool level d. river bed and minimum pool level
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7) A deep well_________________? a. is always deeper than a shallow well b. has more discharge than a shallow well c. is weaker structurally than a shallow well d. both (A) and (B)
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8) 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
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9) The relation between probability (P) and recurrence interval (T) is given by_________________? a. PT = 1 b. PT2 = 1 c. P/T = 1 d. P/T2 = 1
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10) The unit hydrograph of a specified duration can be used to evaluate the hydrograph of storms of_________________? a. same duration only b. same and shorter duration c. same and longer duration d. any duration
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11) 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
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12) 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 c. 90 mm d. 140 mm
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13) A current meter is used to measure the__________________? a. velocity of flow of water b. depth of flow of water c. discharge d. none of the above
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14) 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
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15) When surface of transpiration is submerged under water, then potential evapotranspiration is________________? a. much more than evapotranspiration b. much less than evapotranspiration c. equal to evapotranspiration d. equal to or less than evapotranspi-ration
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16) Under the same conditions, which of the following shapes of water surface will give the highest rate of evaporation ? a. flat water surface b. convex water surface c. concave water surface d. independent of shape of water surface
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17) A raingauge should preferably be fixed________________? a. near the building b. under the tree c. in an open space d. in a closed space
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18) Cyclonic precipitation is caused by lifting of an air mass due to________________? a. pressure difference b. temperature difference c. natural topographical barriers d. all of the above
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19) Infiltration is the_______________? a. movement of water through the soil b. absorption of water by soil surface c. both (A) and (B) d. none of the above
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20) The depth of water required to bring the soil moisture content of a given soil upto its field capacity is called_________________? a. hygroscopic water b. equivalent moisture c. soil moisture deficiency d. pellicular water
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