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A fully penetrating tube well in a 30 m deep confined aquifer with hydraulic conductivity of 4×10^-4m s^-1has 50 L s^-1 discharge. The drawdown and radius of influence are 5 m and 250 m, respectively. Diameter of the tube well in mm is ____________ 1 AnswerT he drawdown at the well face of a 30 cm diameter fully penetrating well in a confined aquifer is 3 m. The radius of influence of this well is 3 km. For the same discharge and aquifer condition, the drawdown at 300 m away from the centre of the well is ______m. (GATE-Agricultural-Engineering-2018)0 AnswerA n inclined cylindrical confined aquifer has coefficient of permeability of 40 m/day. The horizontal distance between two vertical wells penetrating the aquifer is 800 m. The water surface elevations in the wells are 50 m and 45 m above a common horizontal datum. The absolute value of Darcy flux through the aquifer is ______________ m/day.0 AnswerW ater is flowing in two different tubes of diameters D and 2D, with the same velocity. The ratio of laminar friction factors for the larger diameter tube to the smaller diameter tube is1 AnswerA confined sandy aquifer has a thickness of 10 m and transmissivity of 0.75 m2 per day. Its hydraulic conductivity is _____ m/day. (-Gate geology and geophysics 2014)1 AnswerSpecific discharge of 1 cm per day is observed in a porous medium where hydraulic head difference is 0.5 m and flow length is 20 m. Calculate the hydraulic conductivity (in m/day). GATE-Geology and Geophysics-Question-20121 AnswerU nder isothermal condition, a vertical tube of length L = 100 m contains a gas of molecular weight equal to 60. The pressure and temperature at the top of the tube are 100 kPa and 25 oC respectively. Consider the universal gas constant and acceleration due to gravity as 8.314 J mol-1 K-1 and 9.81 m s-2 respectively. If the gas is ideal, the pressure (in kPa) at the bottom of the tube will be ____________ (rounded off to third decimal place).0 AnswerA student is performing the experiment of Resonance Column. The diameter of the column tube is 4 cm. The frequency of the tuning fork is 512 Hz. The air temperature is 38ºC in which the speed of sound is 336 m/s. The zero of the meter scale coincides with the top end of the Resonance Column tube. When the first resonance occurs, the reading of the water level in the column is - jee main 20123 AnswerSaturated steam at 100°C condenses on the outside of a tube. Cold fluid enters the tube at 20° C and exists at 50°C. The value of the Log Mean Temperature Difference (LMTD) is ________°C.1 AnswerA single strength fruit juice is concentrated from 6% total solids (TS) to 24% by ultrafiltration. The feed stream has a flow rate of 12 kg min^-1. The ultrafiltration membrane tube has an inside diameter of 80 mm and the pressure difference applied across the membrane is 2 MPa. If the permeability constant is 4×10-5 kg water m-² kPa^-1 s^-1, the length of the membrane tube is _________m. (GATE-Agricultural-Engineering-2018)0 AnswerHow to download You Tube Videos?1 AnswerWhich physical property of the medium governs the response of Ground Penetrating Radar (GPR)? GATE-Geology and Geophysics-Question-20121 AnswerS egmental baffles in a 2-4 shell and tube heat exchanger0 AnswerWhat is meant by sensitiveness of bubble tube? Describe how you would determine in the field the sensitiveness of a level tube attached to a dumpy level (Dec11, June-July11)?1 AnswerA ball is dropped from rest from a height of 1 m in a frictionless tube as shown in the figure. If the tube profile is approximated by two straight lines (ignoring the curved portion), the total distance travelled (in m) by the ball is __________ (correct to two decimal places). 1 AnswerSegmental baffles in a 2-4 shell and tube heat exchanger (GATE-Chemical-Engg-2018)0 AnswerFigure shows the schematic for the measurement of velocity of air -gate-mechanical-20111 AnswerHow to filter out CC videos from You Tube?2 AnswerA thin-walled tube with external radius of 100 mm and wall thickness of 2 mm, is fixed at one end. It is subjected to a compressive force of 1 N acting at a point on the circumference parallel to its length. The maximum normal stress (in kPa) experienced by the structure is _____________ (accurate to two decimal places). (GATE-Aerospace-Engineering-2018)0 AnswerA pipe of 25mm outer diameter carries steam. -gate-mechanical-20111 Answer
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