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VMMC VMMC Medical Solved Paper-2012

  • question_answer
    An engine pumps water through a hose pipe. Water passes through the pipe and leaves it with a velocity of \[2\,\text{m}{{\text{s}}^{-1}}.\]The mass per unit length of water in the pipe is \[100\,\text{kg}{{\text{m}}^{-1}}.\] What is the power of the engine?

    A)  400W          

    B)  200W

    C)  100 W          

    D)  800 W

    Correct Answer: D

    Solution :

     Power \[=\mu {{v}^{3}}=\frac{m}{l}\times {{v}^{3}}\] \[=100\times {{(2)}^{3}}=800\,W\]


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