The rotor radius of a 3-bladed wind turbine is 60 m. If the wind speed is 8 m/s, what must be the rotor speed w in order to keep the tip speed optimal, ie the tip speed ratio is 7. Report the result in rpm (revolutions per minute. 1 rad / s = 60/(2*pi) rpm). Express the result rounded to 1 decimal place. Moodle should accept both a decimal point and a comma. Only a numeric value is given in response, not units.
The rotor radius of a 3-bladed wind turbine is 60 m. If the wind speed is 8 m/s, what must be the rotor speed w in order to keep the tip speed optimal, ie the tip speed ratio is 7. Report the result in rpm (revolutions per minute. 1 rad / s = 60/(2*pi) rpm). Express the result rounded to 1 decimal place. Moodle should accept both a decimal point and a comma. Only a numeric value is given in response, not units.
Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)
10th Edition
ISBN:9781337399128
Author:Russell E. Smith
Publisher:Russell E. Smith
Chapter8: Basic Electric Motors
Section: Chapter Questions
Problem 2RQ
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