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A form of corrosion called pitting corrosion can occur in aluminum in fresh water. As the name suggests, pits form on the surface of aluminum in this type of corrosion. The pit depth, d follows a cube root relationship time, t:
Normally, a 5 μm thick Al2O3 film forms on the surface of aluminum. If we double the thickness of the film, by what factor will the time to perforation increase
1. water at 80degf flows from a storage tank through 550 feet of 6-inch nominal size cast iron pipe actual id 6.52
Calculate the thermal efficiency of the power cycle. Calculate the thermal efficiency for a reversible power cycle operating between the same low and high temperature reservoirs.
A steam power plant operates on the reheat rankine cycle between 15 mpa and 10 kpa. System enters the high pressure turbine at 15 Mpa and 500c at rate of 12 kg/s. steam is then reheated at constant pressure to 500c befe it expands in the low pressure..
a 3 kg piece of steel is removed from an oven at 700c and placed in a water bath. the final temperature of the water is
steam at a rate of 5 lbms enters an adiabatic turbine at 800 psia 1000 f and leaves at an actual condition of 10 psia
an earthen channel n0.03 has a bed width of 5.0 m a water depth h 1.5 m a 45deg side slope and a channel slope of
A square conducting plate, b meters on the side, is located over a very large conducting plate, with a dielectric of thickness d and pennittivity e between the plates. The plate is connected to a potential V as shown in Figure and a stringconne..
A piston-cylinder device initially contains 0.007m^3 of nitrogen gas at 130kPa and 120C. The nitrogen gas is now expanded polytropically to a state of 100 kPa and 100C. Determine the boundary work done during this process. I know I need to use the fo..
What is the rate of heat removal per unit width of the fin? Generate a plot of the heat removal rate per unit width of the fin for motorcycle speeds ranging from 10 to 100 km/h.
What kind of metals are often recommended for use at low temperatures, particularly when any sudden loading of the part is expected?
The rate of heat addition to an air-standard Brayton cycle is 5.2 × 108 Btu/ h. The pressure ratio for the cycle is 12 and the minimum and maximum temperatures are 520°R and 2800°R, respectively. Determine the thermal efficiency of the cycle.
In an interview for a manufacturing engineering position, you have been told that a certain product was not performing as intended and that changes needed to be made to a few of the features on the component such as shaft sizes and hole dia..
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