Multiple Choice Questions on A pipe with square cross section is supplying water to a cistern which was initially empty The area ........... for CDS Exam Preparation

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Multiple Choice Questions

A pipe with square cross section is supplying water to a cistern which was initially empty The area ...........

Quantitative Aptitude (CDS) Pipes&cistern
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    A pipe with square cross-section is supplying water -to a cistern which was initially empty. The area of cross-section is 4 cm2 and the nozzle velocity of water is 40 m/s. The dimensions of the cistern are 10m x 8m x 6m. Then the cistern will be full in

    9.5 hours

    Incorrect Answer

    9 hours

    Incorrect Answer

    8 hours 20 minutes

    Correct Answer

    8 hours

    Incorrect Answer
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    Explanation:

    Let the cistern will be full in t seconds.

    ∴t=(Volume ofthe cistern)/(Volume of the water flowing out of the pipe per second)

    =10×8×6 x10000/(4 x 40)
    =30000 seconds

    =30000/3600==8h+1/3h=8h+1/3 x 60 min
    = 8 hours 20 minutes

    By: Munesh Kumari
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