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Mechanical Engineering :: Hydraulics and Fluid Mechanics

  1. The value of bulk modulus of a fluid is required to determine

  2. A.

     Reynold's number

    B.

     Froude's number

    C.

     Mach number

    D.

     Euler's number


  3. The specific gravity of an oil whose specific weight is 7.85 kN/m3, is

  4. A.

     0.8

    B.

     1

    C.

     1.2

    D.

     1.6


  5. The continuity equation is connected with

  6. A.

     Open channel/pipe flow

    B.

     Compressibility of fluids

    C.

     Conservation of mass

    D.

     Steady/unsteady flow


  7. Slip of a reciprocating pump is defined as the

  8. A.

     Ratio of actual discharge to the theoretical discharge

    B.

     Sum of actual discharge and the theoretical discharge

    C.

     Difference of theoretical discharge and the actual discharge

    D.

     Product of theoretical discharge and the actual discharge


  9. Kinematic viscosity is dependent upon

  10. A.

     Pressure

    B.

     Distance

    C.

     Density

    D.

     Flow


  11. Which of the following is dimensionless?

  12. A.

     Specific weight

    B.

     Specific volume

    C.

     Specific speed

    D.

     Specific gravity


  13. In impulse Turbine, energy available at the inlet is in the form of

  14. A.

     Potential Energy

    B.

     Strain Energy

    C.

     Kinetic energy

    D.

     None of these


  15. Slip of a reciprocating pump is negative, when

  16. A.

     Suction pipe is short and pump is running at low speeds

    B.

     Delivery pipe is long and pump is running at high speeds

    C.

     Suction pipe is short and delivery pipe is long and the pump is running at low speeds

    D.

     Suction pipe is long and delivery pipe is short and the pump is running at high speeds


  17. Reynolds number is significant in

  18. A.

     Supersonics, as with projectile and jet propulsion

    B.

     Full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc.

    C.

     Simultaneous motion through two fluids where there is a surface of discontinuity, gravity forces, and wave making effect, as with ship's hulls

    D.

     All of the above


  19. Froude number is significant in

  20. A.

     Supersonics, as with projectile and jet propulsion

    B.

     Full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc.

    C.

     Simultaneous motion through two fluids where there is a surface of discontinuity, gravity forces, and wave making effect, as with ship's hulls

    D.

     All of the above