11 Questions
What is the theoretical limit for efficiency in extracting power from the wind?
59%
How does a windmill with a severe interruption of airflow affect wind velocity?
It reduces the effective wind velocity.
What is the range of efficiency for modern windmills in terms of extracting power from the wind?
From 16% to 46%
What are some of the impacts associated with wind power?
Land Use, Noise, Visual impact, Bird/Bat disruption
How does a windmill that intercepts an exceedingly small fraction of the wind affect wind velocity?
It reduces the wind velocity by only a small amount.
What is the primary source of energy that drives the hydraulic cycle?
Sun's electromagnetic radiation
How does a hydraulic plant convert the potential energy of water into electricity?
By using the water to turn a turbine connected to a generator
What is the difference between run-of-river and dam-style hydroelectric plants in terms of environmental impact?
Run-of-river style has less environmental impact compared to dams
Why are hydroelectric stations often built at sharp inclines or waterfalls?
To take advantage of the speed gained by the water due to gravity
What environmental impacts are associated with the operation of large dams?
Danger to downstream communities in case of a breach, disruption of aquatic life, and loss of free-flowing rivers
How does the construction of hydroelectric plants contribute to CO2 emissions?
CO2 is produced during concrete production and transportation
Learn about the cycle of water within the environment driven by energy from the sun and the process of generating electricity in a hydroelectric plant. Understand how water's stored potential energy is converted to electrical energy through turbines and generators.
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