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  • Question

  • If jet of water coming out from a nozzle with a velocity 9.81 m/s, the angle of elevation being 30°, the time to reach the highest point is


  • Options
  • A. 0.25 s
  • B. 0.50 s
  • C. 1.0 s
  • D. 1.5 s.

  • Correct Answer
  • 0.50 s 

    • Hydraulics problems

    Search Results

    • 1. If Re is the Renold's number, the coefficient of friction for laminar flow is

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 2. An orifice is taken as large if

    • Options
    • A. (H2 - H1) > H
    • B. (H2 - H1) > H/4
    • C. (H2 - H1) > H/2
    • D. (H2 - H1) > H/3
      • Discuss
    • 3. 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 vertical reaction at A is

    • Options
    • A. 14,137 kgf
    • B. 5,863 kgf
    • C. 20,000 kgf
    • D. 18,000 kgf.
      • Discuss
    • 4. In pipe lines, a surge tank is provided

    • Options
    • A. to relieve the pressure due to water hammer
    • B. to provide additional water head
    • C. to overflow the pipe line when suddenly closed
    • D. to remove the frictional loss in pipe.
      • Discuss
    • 5. In flow, the liquid particles may possess

    • Options
    • A. potential energy
    • B. kinetic energy
    • C. pressure energy
    • D. all the above.
      • Discuss
    • 6. Total head of a liquid particle in motion is the sum of

    • Options
    • A. potential head and kinetic head
    • B. kinetic head and pressure head
    • C. potential head and pressure head
    • D. potential head, kinetic head and pressure head.
      • Discuss
    • 7. Flow in pipes is laminar if Reynold number is

    • Options
    • A. less than 2100
    • B. more than 3000
    • C. between 2100 and 3000
    • D. none of these.
      • Discuss
    • 8. The mouth piece shown in the below figure is generally known as

    • Options
    • A. Internal mouth piece
    • B. Re-entrant mouth piece
    • C. Borda's mouth piece
    • D. All the above.
      • Discuss
    • 9. The continuity equation

    • Options
    • A. expresses the relationship between work and energy
    • B. relates the momentum per unit volume between two points on a stream line
    • C. relates mass rate of flow along a stream line
    • D. requires that Newton's second law of motion be satisfied at every point in fluid.
      • Discuss
    • 10. If S is the length of the crest, H is the height of water source of a weir whose length is L and discharge is Q m3/sec, the velocity of approach Vd is

    • Options
    • A. 2gH
    • B.
    • C.
    • D.
    • E. none of these.
      • Discuss

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