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Mechanical Engineering :: Hydraulics and Fluid Mechanics in ME

  1. Liquids transmit pressure equally in all the directions. This is according to

  2. A.

     Boyle's law

    B.

     Archimedes principle

    C.

     Pascal's law

    D.

     Newton's formula

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  3. The hydraulic mean depth or the hydraulic radius is the ratio of

  4. A.

     Area of flow and wetted perimeter

    B.

     Wetted perimeter and diameter of pipe

    C.

     Velocity of flow and area of flow

    D.

     None of these

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  5. The mass of 2.5 m3 of a certain liquid is 2 tonnes. Its mass density is

  6. A.

     200 kg/m3

    B.

     400 kg/m3

    C.

     600 kg/m3

    D.

     800 kg/m3

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  7. Saving of work done and power by fitting an air vessel to double acting reciprocating pump is of the order of

  8. A.

     39.2%

    B.

     49.2%

    C.

     68.8%

    D.

     84.8%

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  9. Saving of work done and power by fitting an air vessel to single acting reciprocating pump is of the order of

  10. A.

     39.2%

    B.

     49.2%

    C.

     68.8%

    D.

     84.8%

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  11. The velocity of jet of water traveling out of opening in a tank filled with water is proportional to

  12. A.

     Head of water (h)

    B.

     h²

    C.

     V/T

    D.

     h/2

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  13. The loss of pressure head in case of laminar flow is proportional to

  14. A.

     Velocity

    B.

     (Velocity)2

    C.

     (Velocity)3

    D.

     (Velocity)4

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  15. In a centrifugal pump, the regulating valve is provided on the

  16. A.

     Casing

    B.

     Delivery pipe

    C.

     Suction pipe

    D.

     Impeller

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  17. Piezometer is used to measure

  18. A.

     Pressure in pipe, channels etc.

    B.

     Atmospheric pressure

    C.

     Very low pressures

    D.

     Difference of pressure between two points

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  19. Differential manometer is used to measure

  20. A.

     Pressure in pipes, channels etc.

    B.

     Atmospheric pressure

    C.

     Very low pressure

    D.

     Difference of pressure between two points

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