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Mechanical Engineering :: Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME - section-1
  1. A hydraulic press has a ram of 15 cm diameter and plunger of 1.5 cm. It is required to lift a weight of 1 tonne. The force required on plunger is equal to

    2. A.

     10 kg
    B.

     100 kg
    C.

     1000 kg
    D.

     1 kg

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  2. Specific weight of water in S.I. units is equal to

    3. A.

     1000 N/m3
    B.

     10000 N/m3
    C.

     9.81 × 103 N/m3
    D.

     9.81 × 10⁶ N/m3

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  3. The specific weight of water in S.I. units is taken as

    4. A.

     9.81 kN/m3
    B.

     9.81 × 103 N/m3
    C.

     9.81 × 10-6 N/mm3
    D.

     Any one of these

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  4. A flow is called super-sonic if the

    5. A.

     Velocity of flow is very high
    B.

     Discharge is difficult to measure
    C.

     Mach number is between 1 and 6
    D.

     None of these

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  5. One liter of water occupies a volume of

    6. A.

     100 cm3
    B.

     250 cm3
    C.

     500 cm3
    D.

     1000 cm3

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  6. The variation in the volume of a liquid with the variation of pressure is called its

    7. A.

     Surface tension
    B.

     Compressibility
    C.

     Capillarity
    D.

     Viscosity

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  7. The unit of surface tension is

    8. A.

     N/m
    B.

     N/m2
    C.

     N/m3
    D.

     N-m

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  8. Unit of surface tension is

    9. A.

     Energy/unit area
    B.

     Velocity/unit area
    C.

     Both of the above
    D.

     It has no units

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  9. Hydrometer is used to determine

    10. A.

     Specific gravity of liquids
    B.

     Specific gravity of solids
    C.

     Specific gravity of gases
    D.

     Relative humidity

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  10. The units of dynamic or absolute viscosity are

    11. A.

     Metres² per sec
    B.

     kg sec/meter
    C.

     Newton-sec per meter
    D.

     Newton-sec² per meter

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