Calendar: 1899-1900 Page 804

י Clii FACULTY OF SCIENCE Feed water per hour 5400י lbs hour Temperature of admission steam 350 exhaust steam 120 Indicated 300 Mechanical efficiency 80 pipe 15 inches in diameter connects two reservoirs miles apart having difference of level of 25 feet Find velocity of flow and discharge of the pipe Explain the effect of roughness of surface diameter of pipe on the velocity of flow slanting pipe inches in diameter gradually enlarges to inches The pressure at section in the 2" pipe is 30 lbs per square inch absolute and the velocity 75 feet per second Calculate the pressure in the inch portion of the pipe at section 15 feet below also calculate the pressure for sudden enlargement of the inch pipe 10 Find the power of waterfall where 000 cubic feet of water pass per minute height of fall 30 feet In waterfall 20 tons of water fall per minute height of 30 feet and are employed to drive turbine of 60 efficiency Find the Horse Power of the turbine 11 The wheel of centrifugal pump is 75 feet in diameter the turning moment on the spindle is 15 foot pounds Jf 200 gallons of water are raised per min find the mean velo- city with which the water leaves the wheel assuming that on entering it has no velocity of whirl 12 Find the discharge in gallons per minute from an orifice 2" diameter in the side of tank and under constant head of feet measured from the centre of the orifice If the discharge took place through piece of inch pipe projecting inches into the tank what would be the discharge minute under the same head 13 Find the total efficiency of Pelton wheel from the following data Diameter of nozzle 494 inches brake wheel 12 inches Net load on brake 10 lbs