Work Energy And Power Question 272

Question: A wind-powered generator converts wind energy into electrical energy. Assume that the generator converts a fixed fraction of the wind energy intercepted by its blades into electrical energy For wind speed v, the electrical power output will be proportional to

Options:

A) v

B) v2

C) v3

D) v4

Show Answer

Answer:

Correct Answer: C

Solution:

[c] Number of particles string the blades/time velocity of wind K.E. of particle (Velocity of wind)2

Power output (No. of particles striking/ time) × (K.E. of particle)

Poweroutput v3



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