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Question
Which of the following is best reason for not using longer blades even though they produce greater output power?
Options:
A .  Longer turbine blades experience greater forces
B .  Longer turbine blades experience lesser forces
C .  Safety concerns due to greater momentum of longer blades
D .  Stronger materials are available in abundance
Answer: Option C
Answer: (c).Safety concerns due to greater momentum of longer blades

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