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It is desired to design a wind turbine that will output 2MW of peak electrical power at a location where the average wind speed is 10 m/s and the average ambient conditions are 85 kPa and 5 ?C. What should the rotor blade length be if the aerodynamic efficiency of the blades is 50%, the gearbox has a power transmission efficiency of 85%, and the electrical generator has efficiency of 92% ? Since the purpose of the exercise is to utilize the concept of efficiency, be sure to carefully define the three efficiencies in terms of variables and carefully show how they were used. What is the overall efficiency of the wind turbine?
design of absorption column and the cooler process design of other units should be completed along with pipe sizes. the
a carbon steel ball with a diameter of 50 mm rests in a stainless steel hemispherical socket with a diameter of 60 mm.
What was the percentage error found between experimental and accepted values and what caused any errors, and how could they be minimised?
A mass of 2.5kg are hung vertically from a spring of stifness 5.4kN/m, calculate the maximum amplitude of vibration if the mass is not to jump off the hook.
two wooden members of 80 times 120-mm uniform rectangular cross section are joined by the simple glued scarf splice
saturated water vapor at 300 degrees f enters a compressor operating at steady state with a mass flow rate of 5 lbs and
below is measured voltage v at different time stimes nbsp nbsp nbspnbsp 0nbspnbspnbspnbsp 0.5nbspnbsp 1nbspnbsp 1.5nbsp
in cooling situations where the desired temperature range is large two refrigeration cycles can be stacked to create a
estimate the volume of adhesive wear to expect from an hb270 steel shaft of 40-mm dia rotating at 250 rpm three 8-hour
the loop transfer function of a single-loop negative feedback system isls gcsgs ks 2.5.5 3.2 s2s 1s 10s 30this
10 kg of gaseous oxygen is compressed in a piston-cylinder device from an initial state of .8 m3kg to a final state of
gold foil is 0.08 mm thick and 670mm2 in area. a it is cubic with a0.4076nm. how many unit cells are there in the foil?
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