Q. In a artesian well, when water level falls below the top of confined aquifer, then this type of well is known as ______

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Q. Three tube wells of 20cm diameter each forming an equilateral triangle at distance 100m on side. The coefficient of permeability is 4.15*10¯⁴ m/s, drawdown is 4m and aquifer is 30m thick. If radius of influence is 245m, what is the discharge in each well?

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Q. In a tube well of 20cm diameter in a soil with coefficient of permeability of 4.15*10¯⁴ m/s, drawdown is 4m and aquifer is 30m thick. If radius of influence is 245m, what is the discharge in each well?

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Q. Two tube wells of 20cm diameter each are 100m apart. The coefficient of permeability is 4.15*10¯⁴ m/s, drawdown is 4m and aquifer is 30m thick. If radius of influence is 245m, what is the discharge in each well?

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Q. The formula for discharge for three wells forming an equilateral triangle at distance B on side is given by ____________

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Q. The formula for discharge for two wells at distance B is given by ____________

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Q. The discharge for drawdown of well is given by _______

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Q. When two wells are situated near each other, the discharge in individual well is ________

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Q. The coefficient of permeability by Packer for length in the range 10r > L ≥r test is given by ________

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Q. The coefficient of permeability by Packer for length greater than ten times the radius test is given by ________

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Q. The formula for the open-end test is given by _________

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Q. The U.S. Bureau of Reclamation (Earth manual 1960) has devised two types of pumping-in tests _________

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Q. In the field determination, pumping must continue at a ________

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Q. The permeability of the aquifer is ________ if the drawdown is 4m, discharge is 40litres/sec, thickness of confined aquifer is 30m and the radius of the well is 0.1m. The radius of influence is taken as 245m.

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Q. The formula for the pumping out test in an unconfined aquifer is given by _________

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Q. The drawdown, corresponding to a steady discharge, are observed at a number of wells in _______

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Q. If b is the aquifer thickness, the relationship between coefficient of transmissibility T and coefficient of permeability is ________

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Q. The coefficient of transmissibility is defined as the rate of flow of water through a horizontal strip of unit width and full saturation height under unit hydraulic gradient.

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Q. In the storage coefficient, the unit change in the component of the head is measured in _________ to the surface.

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Q. The relation between porosity n, specific retention SR, specific yield Sγ is __________

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