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1. A 10.9-ft-diameter Pelton wheel operates at 500 rpm with a total head just upstream of the nozzle of 5330 ft. Estimate the diameter of the nozzle of the single-nozzle wheel if it develops 25,000 horsepower.
2. A Pelton wheel has a diameter of 2 m and develops 500 kW when rotating 180 rpm. What is the average force of the water against the blades? If the turbine is operating at maximum efficiency, determine the speed of the water jet from the nozzle and the mass flowrate.
Assuming that imported oil cost $55 per barrel, how long did it take for the savings in import to equal the investment in the program?
The analysis of a mass basis of an ideal gas mixture at 50 F, 25 lbf/in2. is 60% CO2, 25% SO2, and 15% N2. The analysis in terms of mole fractions. Determine: The apparent molecular weight of the mixture. The partial pressure of each component in lbf..
Water flows from the bottom of a large tank where the pressure is 120 psia to a turbine located 65 ft below the bottom of the tank that produces 40 hp. The pressure at the turbine exit is 42 psia and the water velocity is 36 ft/sec. The flow rate of ..
Find the shortest possible period of revolution of two identical gravitating solid spheres that are in circular orbit in free space about a point midway between them. The spheres are made of platinum, density 21.5 g/cm3.
an industrial machine is being cooled by 0.4 kgs water at 15 degrees c that is chilled from 35 degrees c by a
Assume all deflections to be small (e.g., m moves approximately vertically if θ is small), and neglect gravity. Use the Extended Hamilton's Principle to derive the equations of motion and the boundary conditions for this system.
a gas turbine power plant produces a net power output of 100 mw with an overall thermal efficency of 35a if the heating
A rigid, insulated tank that is initially evacuated is connected through a valve to a supply line that carries steam at 4 MPa. Now the valve is opened, and steam is allowed to flow into the tank until the pressure reaches 4 MPa, at which point the va..
Calculate the maximum energy that a 3-MeV alpha particle can transfer to an electron in a single collision
consider flow of water over a flat plate of length 5 m. on one graph plot the both the drag caused by shear stress and
closing a value suddenly in a pipe with flowing water can generate water hammer where the momentum of the water column
Water flows in a 2 ft diameter duct under the following conditions: p1= 55 psia and v1=20ft/sec. At another section 12 ft below the first the diameter is 1 ft and the pressure p2=40 psia. Compute the frictional losses between these two sections. Dete..
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