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  • Question
  • Dimension of absolute viscosity is


  • Options
  • A. ML-1T-1
  • B. MLT-1
  • C. ML-1T
  • D. MLT

  • Correct Answer
  • ML-1T-1 


  • Fluid Mechanics problems


    Search Results


    • 1. The fluid in which the shearing stress within it is proportional to the velocity gradient across the sheared section, is called a __________ fluid.

    • Options
    • A. Bingham
    • B. Newtonion
    • C. perfect
    • D. none of these
    • Discuss
    • 2. The terminal velocity of a particle moving through a fluid varies as dpn. What is the value of n' for Newton's law regime?

    • Options
    • A. 0.5
    • B. 1
    • C. 1.5
    • D. 3
    • Discuss
    • 3. Laminar flow of a Newtonion fluid ceases to exist, when the Reynolds number exceeds

    • Options
    • A. 4000
    • B. 2100
    • C. 1500
    • D. 3000
    • Discuss
    • 4. Shear stress in a fluid flowing in a round pipe

    • Options
    • A. varies parabolically across the cross-section.
    • B. remains constant over the cross-section.
    • C. is zero at the centre and varies linearly with the radius.
    • D. is zero at the wall and increases linearly to the centre.
    • Discuss
    • 5. For Laminar flow through a packed bed, the pressure drop is proportional to (Vs is the superficial liquid velocity and Dp is the particle diameter)

    • Options
    • A. Vs/Dp2
    • B. Vs2/Dp2
    • C. Vs2/Dp3
    • D. Vs/Dp3
    • Discuss
    • 6. The ratio of the depth of flow to the hydraulic radius for the most economical trapezoidal section, in open channel flow is

    • Options
    • A. 0.5
    • B. 1
    • C. 1.5
    • D. 2
    • Discuss
    • 7. Pick out the correct statement.

    • Options
    • A. A forced vortex occurs when fluid rotates as a solid about an axis.
    • B. In laminar flow, Newton's law of viscosity does not apply.
    • C. A free vortex occurs, when fluidrotates as a solid.
    • D. In turbulent flow, there are neither cross-currents nor eddies.
    • Discuss
    • 8. Foot valves provided in pumps are __________ valves.

    • Options
    • A. relief
    • B. three/four way
    • C. pressure reducing
    • D. directional control
    • Discuss
    • 9. The distribution given by microscopic analysis of powder is

    • Options
    • A. number
    • B. length
    • C. area
    • D. volume
    • Discuss
    • 10. If dp is the equivalent diameter of a non-spherical particle, Vp its volume and sp its surface area, then its sphericity is ?s is defined by

    • Options
    • A. ?s = 6 Vp/dp sp
    • B. ?s = Vp/dp sp
    • C. ?s = 6 dp Sp/Vp
    • D. ?s = dp Sp/Vp
    • Discuss


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