Home / Mechanical Engineering / Hydraulics and Fluid Mechanics :: section-5

Mechanical Engineering :: Hydraulics and Fluid Mechanics

  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)

    View Answer

    Workspace

    Discuss Discuss in Forum


  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

    View Answer

    Workspace

    Discuss Discuss in Forum


  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

    View Answer

    Workspace

    Discuss Discuss in Forum


  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

    View Answer

    Workspace

    Discuss Discuss in Forum


  9. The horizontal component of buoyant force is

  10. A.

     Negligible

    B.

     Same as buoyant force

    C.

     Zero

    D.

     None of the above

    View Answer

    Workspace

    Discuss Discuss in Forum


  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

    View Answer

    Workspace

    Discuss Discuss in Forum


  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

    View Answer

    Workspace

    Discuss Discuss in Forum


  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

    View Answer

    Workspace

    Discuss Discuss in Forum


  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

    View Answer

    Workspace

    Discuss Discuss in Forum


  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

    View Answer

    Workspace

    Discuss Discuss in Forum