4. Propellers created during World War I were used to make the first wind turbines, which generated electricity rather than milling grain or pumping water.
a. True
b. False
5. Most modern wind turbines make use of aerodynamic lift.
a. True
b. False
Answer (2)
The first statement is false as early wind turbines were primarily used for milling grain and pumping water, not created from propellers. The second statement is true as modern wind turbines do utilize aerodynamic lift to generate electricity.
;
The first statement is false because early wind turbines were primarily for milling grain and pumping water. The second statement is true as modern wind turbines utilize aerodynamic lift to generate electricity. ;
