1. While determining the yield of open wells by the pumping test





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MCQ->Two completely penetrating wells are located L (in metres) apart, in homogeneous confined aquifer. The drawdown measured at the mid point between the two wells (at a distance of 0.5 L from both the wells) is 2.0 m when only the first well is being pumped at the steady rate of Q1 m3/sec. When both the wells are being pumped at identical steady rate of Q2 m3/sec, the drawdown measured at the same location is 8, 0 m. It may be assumed that the drawdown at the wells always remains at 10.0 m when being pumped and the radius of influence is larger than 0.5 L Q1/Q2 is equal to....
MCQ->While determining the yield of open wells by the pumping test....
MCQ->When a constant discharge 2.91 litres/sec. was obtained in a pumping test, the draw downs in the test wells at 3 m and 6.184 m were 2.6 m and 0.3 m respectively. If over-all depth of the pumping well was 16 m, the permeability of the soil, is....
MCQ->The coefficients of permeability of soils of an unconfined aquifer and another confined aquifer were determined by pumping water from the wells and observing the effect of water table in two test wells at equal distances was found to be equal. The total height of confined aquifer H is given by....
MCQ->Consider the following statements :1. Infiltration galleries are placed along the river beds at a depth of 4 to 6 m.2. The draw-down for the infiltration galleries is more than that for radial wells.3. Clogging of pipe pores in inflitration galleries is less than that for radial wells.4. The cost of extracting unit volume of water is more in case of infiltration galleries as compared to radial wells.Which of the statements given above is/are correct ?....
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