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In a projected low-head hydroelectric scheme, 282 m3 /s of water is available under a head of 3.7 m. It is proposed to use Francis turbines with specific speed 2.42, for which the rotational speed is 50 rpm. Determine the number of units required and the power to be developed by each machine. Assume an efficiency of 0.9.
a helical compression spring is made of no. 18 .0147 in wire having a torsional yield strength of 108 kpsi. it has an
air is contained in a vertical cylinder fitted with a frictionless piston and a set of stops as shown in the sketch
a cylindrical specimen of some metal alloy having an elastic modulus of 108 gpa and an original cross-sectional
the birthday problem the birthday problem is stated as follows if there is a group of n people in a room what is the
Create a (Matlab) program (not Excel!) which allows you to vary the geometric parameters (rb {bottom radius of ask; rt {top radius of ask; h { initial liquid height; A { hole area; N { number of discretization points).
Steam at 500 kPa, 300 degrees C is used to heat cold water at 15 degrees C to 75 C for a domestic hot water supply. How much steam per kilogram of liquid water is needed if the steam should not condense?
When ordered, the setup cost to produce an order is $600, and the production process is able to produce 300 per week and deliver them weekly as produced. What is the economic-order quantity?
if when machining at high cutting speeds the heat conducted into the tool becomes negligible and the heat conducted
Consider the following strange but true, units: 1 batman = 3 kilograms 1 hogshead = 63 gallons A basketball has a mass of approximately 624 grams and a volume of 0.25 cubic feet. Determine the density of the basketball in units of of batman per hogsh..
a refrigerator is situated in an insulated room it has a 2-hp motor that drives a compressor. over a 30 minute period
A rise in autonomous consumption spending or a rise in invest- ment or a rise in government spending by 50 leads to the same impact on equilibrium income and toidentical adjustment paths for Y(t).
If you have a plane wall separating hot and cold fluids at temperature T(infinity)1 & T(infinity)2. Using x=0 & x=L as boundary conditions, determine what the heat flux would be in terms of T(infinity)1, T(infinity)2, h1, h2, k, L.
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