15 (5 pts.) Efficiency. Consider these statements: #1 If friction were eliminated, it would be possible to make a wind t

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15 5 Pts Efficiency Consider These Statements 1 If Friction Were Eliminated It Would Be Possible To Make A Wind T 1 (223.08 KiB) Viewed 47 times

15 (5 pts.) Efficiency. Consider these statements: #1 If friction were eliminated, it would be possible to make a wind turbine that operates at 100% efficiency. #2 If friction were eliminated, it would be possible to make a hydroelectric plant that operates at 100% efficiency. Choose one of the following: A. Only Statement 1 is true. B. Only Statement 2 is true. C. Both Statements 1 and 2 are true. D. Neither Statements 1 or 2 are true. 16 (5 pts.) Turbines. Consider two wind turbines, each located in sites with the same wind speed, and each with the same efficiency. Turbine 1 has a radius of 25 meters. Turbine 2 has a radius of 50 meters. Turbine 2 generates ___ times as much power as turbine 1. (Fill in the blank.) A. 1x (i.e. the same) B. 2x C. 4x D. 8x E. There is not enough information to answer this. 17 (4 pts.) Wind farms. Continuing, now consider two wind farms. Farm 1 is composed of turbines of type #1 (above), and Farm 2 is composed of turbines of type #2. Suppose each wind farm has the same total area. If the turbines are spaced with their optimal spacing, the number of turbines on Farm 2 is t imes the number of turbines in Farm 1. (Fill in the blank.) A. 1x B. - * D. 2x E. None of the above 18 (6 points) Explain your answer to Question 17, above (hint, we assume spacing between turbines is 5d, where d is the diameter of a turbine.)