Final answer:
The maximum efficiency of wind turbines is up to around 80%, but realistically they operate closer to 35-45% efficiency, with the typical range being 40-50%. The correct answer to the question is option b) 80; 50.
Step-by-step explanation:
Wind turbines are devices that convert the kinetic energy from wind into electrical energy. The efficiency of a wind turbine refers to how well it can convert the wind energy into usable electrical power. The efficiency of wind turbines can vary, but they typically achieve an efficiency rate of 40-50% under optimal operating conditions. Wind turbines have a maximum efficiency, which is constrained by the Betz limit, often cited to be around 59.3%. However, in realistic scenarios, the efficiency of wind turbines is lower due to various factors such as air drag, friction, and other losses in the system.
The maximum efficiency of wind turbines is up to around 80%, but realistically they tend to operate at about 35-45% efficiency, depending on the specific design and environmental conditions. This realistic range is a compromise that reflects operational conditions like wind speed variability and turbine design constraints. Therefore, the most accurate answer to the student's question would be option b) 80; 50.