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  • Question

  • Inside pressure in a hollow soap bubble in the air is : (where d is the diameter of the bubble)


  • Options
  • A. Inside pressure in a hollow soap bubble in the air is : (where d is the diameter of the bubble)
  • B. Inside pressure in a hollow soap bubble in the air is : (where d is the diameter of the bubble)
  • C. Inside pressure in a hollow soap bubble in the air is : (where d is the diameter of the bubble)
  • D. Inside pressure in a hollow soap bubble in the air is : (where d is the diameter of the bubble)

  • Correct Answer
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    • Hydraulics problems

    Search Results

    • 1. The ratio of maximum velocity to average velocity of viscous fluid through a circular pipe is

    • Options
    • A. 0.5
    • B. 0.75
    • C. 1.25
    • D. 2.00
      • Discuss
    • 2. Hydrostatic pressure on a dam depends upon its

    • Options
    • A. length
    • B. depth
    • C. shape
    • D. material
    • E. both (b) and (c).
      • Discuss
    • 3. Most economical section of a circular channel for maximum discharge

    • Options
    • A. depth of water = 0.95 diameter of circular section
    • B. hydraulic mean depth = 0.286 diameter of circular section
    • C. wetted perimeter = 2.6 diameter of circular section
    • D. wetted perimeter = 2.83 depth of water
    • E. all the above.
      • Discuss
    • 4. Euler's equation for motion of liquids, is given by

    • Options
    • A.
    • B.
    • C.
    • D. ?dp + gdz + vdv = 0
      • Discuss
    • 5. Unit of kinematic viscosity is

    • Options
    • A. m2/sec
    • B. Newton sec/m2
    • C. Newton sec/m3
    • D. Kg sec/m2.
      • Discuss
    • 6. If the volume of a liquid weighing 3000 kg is 4 cubic metres, 0.75 is its

    • Options
    • A. specific weight
    • B. specific mass
    • C. specific gravity
    • D. none of these.
      • Discuss
    • 7. The maximum vacuum created at the summit of a syphon is

    • Options
    • A. 2.7 m of water
    • B. 7.4 m of water
    • C. 5.5 m of water
    • D. none.
      • Discuss
    • 8. The Empirical formula for discharge over large rectangular weirs, is known as

    • Options
    • A. Francis formula
    • B. Bazin formula
    • C. Rehbook formula
    • D. Kutter's formula.
      • Discuss
    • 9. A cylinder 3 m in diameter and 4 m long retains water one side as shown in the below figure. If the weight of the cylinder is 2000 kgf, the horizontal reaction at B is

    • Options
    • A. 10,000 kgf
    • B. 15,000 kgf
    • C. 20,000 kgf
    • D. 18,000 kgf.
      • Discuss
    • 10. The moment of inertia of a floating body along its longitudinal axis and the volume of water displaced by it are I and V respectively. The height of the metacentre above centre of buoyancy of the body, is

    • Options
    • A.
    • B.
    • C.
    • D.
    • E.
      • Discuss

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