logo

CuriousTab

CuriousTab

Discussion

Home ‣ Civil Engineering ‣ Hydraulics Comments
  • Question

  • The shear stress distribution in viscous fluid through a circular pipe is :


  • Options
  • A. maximum at the centre
  • B. maximum at the inside of surface
  • C. same throughout the section
  • D. none of these.

  • Correct Answer
  • same throughout the section 

    • Hydraulics problems

    Search Results

    • 1. A pipe consisting of several pipes of varying diameters and lengths, may be replaced by an equivalent pipe of diameter D of length

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 2. An ideal flow of a liquid obeys

    • Options
    • A. Continuity equation
    • B. Newton's law of viscosity
    • C. Newton's second law of motion
    • D. dynamic viscosity law,
      • Discuss
    • 3. The thickness of a sharp crested weir is kept less than

    • Options
    • A. one-third of the height of water on the sill
    • B. one-half of the height of water on the sill
    • C. one-fourth of the height of water on the sill
    • D. two-third of the height of water on the sill
    • E. none of these.
      • Discuss
    • 4. A piezometer opening in pipes measures

    • Options
    • A. velocity head
    • B. static pressure
    • C. total pressure
    • D. negative static pressure.
      • Discuss
    • 5. A tank 4m x 3m x 2m containing an oil of specific gravity 0.83 is moved with an acceleration g/2 m sec2. The ratio of the pressures at its bottom when it is moving vertically up and down, is

    • Options
    • A. 2
    • B. 3
    • C. 1/2
    • D. 1/3
      • Discuss
    • 6. When two layers of a fluid separated by dy move over the other with a difference of velocity dv, causes a shearing stress , where ? is known as

    • Options
    • A. coefficient of viscosity
    • B. absolute viscosity
    • C. dynamic viscosity
    • D. viscosity
    • E. all the above.
      • Discuss
    • 7. The time required to close a valve gradually is (where L is the length of pipe and C = velocity of pressure wave)

    • Options
    • A.
    • B. ?
    • C. >
    • D. <
      • Discuss
    • 8. The diameter (d) of a nozzle fixed at the end of a pipe (diameter D, length L) for maximum energy, is

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 9. Reynold number is the ratio of initial force and

    • Options
    • A. viscosity
    • B. elasticity
    • C. gravitational force
    • D. surface tension.
      • Discuss
    • 10. The momentum correction factor (?) for the viscous flow through a circular pipe is

    • Options
    • A. 1.25
    • B. 1.33
    • C. 1.50
    • D. 1.66
    • E. 2.00
      • Discuss

    Comments

    There are no comments.
Enter a new Comment




Aptitude

Engineering

Programming

Reasoning

Links

Copyright ©CuriousTab. All rights reserved.