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  • Question
  • The dimension of dynamic viscosity is


  • Options
  • A. ML-1T-1
  • B. L2T-1
  • C. LT-2
  • D. ML-1T-2

  • Correct Answer
  • ML-1T-1 


  • Fluid Mechanics problems


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    • 1. Nominal size of the discharge pipe of a pump is usually __________ the nominal size of the inlet pipe.

    • Options
    • A. smaller than
    • B. larger than
    • C. same as
    • D. twice
    • Discuss
    • 2. A Bingham fluid of viscosity ? = 10 Pa.s and yield stress, ?0 = 10 KPa, is shared between flat parallel plates separated by a distance of 10-3 m. The top plate is moving with a velocity of 1 m/s. The shear stress on the plate is

    • Options
    • A. 10 KPa
    • B. 20 KPa
    • C. 30 KPa
    • D. 40 KPa
    • Discuss
    • 3. __________ pumps are axial flow pumps.

    • Options
    • A. Turbine
    • B. Propeller
    • C. Diffuser
    • D. none of these
    • Discuss
    • 4. The net positive suction head (NPSH) of a centrifugal pump is defined as the sum of the velocity head and the pressure head at the

    • Options
    • A. discharge.
    • B. suction.
    • C. suction minus vapor pressure of the liquid at suction temperature.
    • D. discharge minus vapor pressure of the liquid at the discharge temperature.
    • Discuss
    • 5. For the transfer of solution of thick slurry, the pump used is a __________ pump.

    • Options
    • A. reciprocating
    • B. gear
    • C. diaphragm
    • D. centrifugal
    • Discuss
    • 6. Which of the following denotes the effect of compressibility in fluid flow?

    • Options
    • A. Weber number
    • B. Mach number
    • C. Euler number
    • D. Reynolds number
    • Discuss
    • 7. Schedule number of a pipe, which is a measure of its wall thickness, is given by

    • Options
    • A. 1000 P'/S
    • B. 100 P'/S
    • C. 1000 S/P'
    • D. 10000 P'/S
    • Discuss
    • 8. Which of the following is not a dimension-less parameter?

    • Options
    • A. Euler number
    • B. Specific gravity
    • C. Fanning friction factor
    • D. None of these
    • Discuss
    • 9. Dimension of surface tension is(where, F = force, L = length)

    • Options
    • A. FL-1
    • B. F-1 . L
    • C. F.L-2
    • D. F-2 . L
    • Discuss
    • 10. In fluid flow, cavitation is caused, if the

    • Options
    • A. fluid velocity decreases to zero.
    • B. total energy decreases.
    • C. both (a) and (b).
    • D. flow pressure approaches its vapor pressure at the prevailing temperature.
    • Discuss


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