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Large wind turbines with blade span diameters of over 100 m are available for electric power generation. Consider a wind turbine with a blade span diameter of 100 m installed at a site subjected to steady winds at 8 m/s. Taking the overall efficiency of the wind turbine to be 32 percent and the air density to be 1.25 kg/m3, determine the electric power generated by this wind turbine. Also, assuming steady winds of 8 m/s during a 24-hour period, determine the amount of electric energy and the revenue generated per day for a unit price of $0.06/kWh of electricity.
A first class lever, in static equilibrium, has a 50lb resistance force and 15lb effort force. The lever's effort force is located 4 ft from the fulcrum.3. Using static equilibrium calculations, calculate the length from the fulcrum to the resista..
a first-order system is subjected to a harmonic input of 3hz. the system has a time constant of 0.5s. calculate the
Komodo dragons are the largest lizards known to man. A 250-pound dragon can eat enough food to increase it body weight by 1/2. Which number sentence could be used to find w, the weight of a k0modo dragon after increasing it body weight by 1/2?
two streams of air mix together. the first stream state 1 has 4 kgs of air entering at 300k 1 bar. the second stream of
two resistors r1 120.0 ohms and r2 200.0 ohms are connected in parallel to each other then in series to a 12.0 volt
B) Determine the minimum amount of work [kJ ] required to reach this end state. C) If more than the minimum work is actually used, where does this extra energy go? That is what becomes of the extra energy?
a long flat bar has the s-n diagram. the bar is 6in wide by .5 in thick. it has a 2 in hole in the middle.a what is the
it has been determined that a point in a load-carrying member is subjected to the following stress condition sx 400 mpa
the gate in the is hinged at H.the gate is 2 m wide and normal to the palne of the diagram.calculate the force required to hold the gate closed.
a hydrogen tank 25 cm in diameter and 80 cm in height is charged to 150 atmospheres at room temperature 25 c. a
air is contained in a vertical cylinder fitted with a frictionless piston and a set of stops as shown in the sketch
1. calculate the specific volume of carbon dioxide 10 degrees celsius and 80 quality?2. calculate the specific volume
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