Home / Mechanical Engineering / Hydraulics and Fluid Mechanics in ME :: section-1

Mechanical Engineering :: Hydraulics and Fluid Mechanics in ME

  1. The Metacentric heights of two floating bodies A and B are 1 m and 1.5 m respectively. Select the correct statement.

  2. A.

     The bodies A and B have equal stability

    B.

     The body A is more stable than body B

    C.

     The body B is more stable than body A

    D.

     The bodies A and B are unstable

    View Answer

    Workspace

    Discuss Discuss in Forum


  3. Kinematic viscosity is equal to

  4. A.

     Dynamic viscosity/density

    B.

     Dynamic viscosity × density

    C.

     Density/dynamic viscosity

    D.

     1/dynamic viscosity × density

    View Answer

    Workspace

    Discuss Discuss in Forum


  5. A fluid having no viscosity is known as

  6. A.

     Real fluid

    B.

     Ideal fluid

    C.

     Newtonian fluid

    D.

     Non-Newtonian fluid

    View Answer

    Workspace

    Discuss Discuss in Forum


  7. The power transmitted through the nozzle is maximum when the head lost due to friction in the pipe is __________ of the total supply head.

  8. A.

     One-half

    B.

     One-third

    C.

     Two-third

    D.

     None of these

    View Answer

    Workspace

    Discuss Discuss in Forum


  9. The total head of a liquid particle in motion is equal to

  10. A.

     Pressure head + kinetic head + potential head

    B.

     Pressure head - (kinetic head + potential head)

    C.

     Potential head - (pressure head + kinetic head)

    D.

     Kinetic head - (pressure head + potential head)

    View Answer

    Workspace

    Discuss Discuss in Forum


  11. The total energy of a liquid particle in motion is equal to

  12. A.

     Pressure energy + kinetic energy + potential energy

    B.

     Pressure energy - (kinetic energy + potential energy)

    C.

     Potential energy - (pressure energy + kinetic energy

    D.

     Kinetic energy - (pressure energy + potential energy)

    View Answer

    Workspace

    Discuss Discuss in Forum


  13. The maximum efficiency of jet propulsion of a ship with inlet orifices at right angles to the direction of motion of ship, is

  14. A.

     40%

    B.

     50%

    C.

     60%

    D.

     80%

    View Answer

    Workspace

    Discuss Discuss in Forum


  15. The power absorbed (in watts) in overcoming the viscous resistance of a footstep bearing is

  16. A.

     μ π³ N² R² /1800 t

    B.

     μ π³ N² R⁴ /1800 t

    C.

     μ π³ N² R² /3600 t

    D.

     μ π³ N² R⁴ /3600 t

    View Answer

    Workspace

    Discuss Discuss in Forum


  17. The critical depth for a channel is given by (where q = Unit discharge (discharge per unit width) through the channel)

  18. A.

     (q/g)1/2

    B.

     (q²/g)1/3

    C.

     (q³/g)1/4

    D.

     (q⁴/g)1/5

    View Answer

    Workspace

    Discuss Discuss in Forum


  19. The hydraulic gradient line lies over the centre line of the pipe by an amount equal to the

  20. A.

     Pressure head

    B.

     Velocity head

    C.

     Pressure head + velocity head

    D.

     Pressure head - velocity head

    View Answer

    Workspace

    Discuss Discuss in Forum