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Mechanical Engineering :: Hydraulics and Fluid Mechanics in ME

  1. The efficiency of a hydraulic press is given by (where W = Weight lifted by ram, P = Force applied on plunger, A = Area of ram, and a = Area of plunger)

  2. A.

     (W/p) × (A/a)

    B.

     (p/W) × (a/A)

    C.

     (W/p) × (a/A)

    D.

     (p/W) × (A/a)

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  3. An object having 10 kg mass weighs 9.81 kg on a spring balance. The value of 'g' at this place is

  4. A.

     10 m/sec²

    B.

     9.81 m/sec²

    C.

     9.75 m/sec²

    D.

     9 m/sec

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  5. The coefficient of viscosity may be determined by

  6. A.

     Capillary tube method

    B.

     Orifice type viscometer

    C.

     Rotating cylinder method

    D.

     All of these

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  7. The region between the separation streamline and the boundary surface of the solid body is known as

  8. A.

     Wake

    B.

     Drag

    C.

     Lift

    D.

     Boundary layer

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  9. The horizontal component of buoyant force is

  10. A.

     Negligible

    B.

     Same as buoyant force

    C.

     Zero

    D.

     None of the above

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  11. Puck up the wrong statement about centrifugal pump

  12. A.

     Discharge a diameter

    B.

     Head a speed²

    C.

     Head a diameter

    D.

     Power a speed⁴

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  13. The length of the divergent cone in a Venturimeter is __________ that of the convergent cone.

  14. A.

     Equal to

    B.

     Double

    C.

     Three to four times

    D.

     Five to six times

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  15. Normal depth in open channel flow is the depth of flow corresponding to

  16. A.

     Steady flow

    B.

     Unsteady flow

    C.

     Laminar flow

    D.

     Uniform flow

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  17. The discharge of a double acting reciprocating pump is (where L = Length of stroke, A = Cross-sectional area of piston, and N = Speed of crank in r.p.m.)

  18. A.

     L.A.N

    B.

     2 L.A.N

    C.

     (L.A.N)/60

    D.

     (2 L.A.N)/60

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  19. A flow whose streamline is represented by a curve, is called

  20. A.

     One-dimensional flow

    B.

     Two-dimensional flow

    C.

     Three-dimensional flow

    D.

     Four-dimensional flow

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