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CEE Kerala Engineering CEE Kerala Engineering Solved Paper-2008

  • question_answer
    The height of the dam, in a hydroelectric power station is 10 m. In order to generate 1 MW of electric power, the mass of water (in kg) that must fall per second on the blades of the turbines is

    A)  \[{{10}^{6}}\]                   

    B)         \[{{10}^{5}}\]                   

    C)  \[{{10}^{3}}\]                   

    D)         \[{{10}^{4}}\]

    E)  \[{{10}^{2}}\]

    Correct Answer: D

    Solution :

    Power, \[P=\frac{mgh}{t}\] or    \[\frac{m}{t}=\]mass of water fall per second                 \[=\frac{P}{gh}=\frac{1\times {{10}^{6}}}{10\times 10}={{10}^{4}}kg/s\]


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