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  • Question
  • A vessel of 4 m3 contains an oil which weighs 30 kN. The specific weight of the oil is


  • Options
  • A. 4.5 kN/m3
  • B. 6 kN/m3
  • C. 7.5 kN/m3
  • D. 10 kN/m3

  • Correct Answer
  • 7.5 kN/m3 


  • Hydraulics and Fluid Mechanics problems


    Search Results


    • 1. The coefficient of discharge for an external mouthpiece depends upon

    • Options
    • A. velocity of liquid
    • B. pressure of liquid
    • C. area of mouthpiece
    • D. length of mouthpiece
    • Discuss
    • 2. Surface tension force is the product of surface tension per unit length and cross-sectional area of flow.

    • Options
    • A. Correct
    • B. Incorrect
    • Discuss
    • 3. According to Chezy's formula, the discharge through an open channel is (where A = Area of flow, C = Chezy's constant, m = Hydraulic mean depth, and i = Uniform slope in bed)

    • Options
    • A. A m x i
    • B. C m x i
    • C. AC m x i
    • D. mi A x C
    • Discuss
    • 4. The velocity of flow is same at all points in the cross-section of a channel.

    • Options
    • A. True
    • B. False
    • Discuss
    • 5. An average value of coefficient of velocity is

    • Options
    • A. 0.62
    • B. 0.76
    • C. 0.84
    • D. 0.97
    • Discuss
    • 6. A flow in which each liquid particle has a definite path, and the paths of individual particles do not cross each other, is called

    • Options
    • A. steady flow
    • B. uniform flow
    • C. streamline flow
    • D. turbulent flow
    • Discuss
    • 7. In a footstep bearing, if the radius of the shaft is doubled, then the torque required to overcome the viscous resistance will be

    • Options
    • A. double
    • B. four times
    • C. eight times
    • D. sixteen times
    • Discuss
    • 8. The velocity through a channel of circular section will be maximum when the depth of water is __________ the diameter of the circular channel.

    • Options
    • A. 0.34 times
    • B. 0.67 times
    • C. 0.81 times
    • D. 0.95 times
    • Discuss
    • 9. When a tube of smaller diameter is dipped in water, the water rises in the tube with an upward __________ surface.

    • Options
    • A. concave
    • B. convex
    • Discuss
    • 10. The density of a liquid in kg/m3 is numerically equal to its specific gravity.

    • Options
    • A. True
    • B. False
    • Discuss


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