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Consider a wind turbine with a 90-m blade span subjected to 25-km/h steady winds. If the combined turbine-generator efficiency of the wind turbine is 32 percent. Take the density of air to be 1.25 kg/m3, and disregard frictional effects. Determine the power generated by the turbine.
estimate the velocity with which you would contact the ground if you jumped from an airplane at an altitude of 5000 ft
water is the working fluid in an ideal rankine cycle. superheated vapor enters the turbine at 8 mpa 450 degc. the
What is the force P to keep the system in equilibrium for the angles specified?
An engine block with a surface area measured to be 0.90m2 generates a power output of 55 kW with a net engine efficiency of 35%. The engine block operates inside a compartment at 157oC and the average convection heat transfer coefficient of 60 W/m..
a paperclip is made of wire 1.25mm in diameter. if the original material from which the wire is made nbspwas 15mm in
a 5 ft3 tank containing steam at 14.7 psia 1 quality is fitted with a relief valve. heat is transferred to the tank
the concrete slab of a basement is 11 m long 8 m wide and 0.20m thick. during the winter temperatures are nominally 17
a cylinder with a moveable piston holds .20 lb of hydrogen initially in a volume of 1 cu ft at a tem-perature of 1300
a thin flat plate is installed in a water tunnel as a splitter. the plate is 0.3 m long and 1 m wide. the freestream
the heat supplied by a heat pump used to maintain a buildings temperature is often supplemented by another source of
an iron ball is thrown into the atlantic ocean. density of iron is 7856 kgm3. density of salt water is 1020 kgm3.
a 6.44 kg steel ball is at a height of 8.12 meters above the floor traveling at a velocity of 4.69 ms and has an
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