JEE Main & Advanced Physics Work, Energy, Power & Collision / कार्य, ऊर्जा और शक्ति Question Bank Self Evaluation Test - Work, Energy and Power

  • question_answer
    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

    A) v

    B) \[{{v}^{2}}\]   

    C) \[{{v}^{3}}\]

    D) \[{{v}^{4}}\]

    Correct Answer: C

    Solution :

    [c] Number of particles string the blades/time \[\propto \] velocity of wind K.E. of particle \[\propto \] (Velocity of wind)2 \[\therefore \]Power output \[\propto \] (No. of particles striking/ time) \[\times \] (K.E. of particle) \[\therefore Power output~\propto {{v}^{3}}\]


You need to login to perform this action.
You will be redirected in 3 sec spinner