Three pumping wells along a straight line are spaced 200 m apart. what should be the steady state pumping rate from each well so that the drawdown in each well will not exceed 2 m? the transmissivity of the confined aquifer that all the wells penetrate fully is 2400 m2/day and all the wells are 40 cm in diameter. the thickness of the aquifer is 40 m and the radius of influence of each well is 800 m.

Manometers are good examples of measuring instruments, nowadays they are not as common as before. a)-capacitive probe gauges b)-gravitational gauges deformation ) gauges d)-digital gauges

Inspection for bearing condition will include: (clo4) a)-color b)-smell c)-size d)-none of the above

Athin walled concentric tube exchanger is used to cool engine oil from 160°c to 60°c with water that is available at 25°c acting as a coolant. the oil and water flow rates are each at 2 kg/s, and the diameter of the inner tube is 0.5 m and the corresponding value of the overall heat transfer coefficient is 250 w/m2. oc. how long must the heat exchanger be to accomplish the desired cooling? cpwater=4.187 kj/kg-candcpengine el=2.035 kj/kg·°c, oil . 120]