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  • Question

  • Garnett's diagrams are used for graphical solution of design equations of a canal by


  • Options
  • A. Lacey's theory
  • B. Kennedy's theory
  • C. Gibb's theory
  • D. Lindlay theory.

  • Correct Answer
  • Kennedy's theory 

    • Irrigation problems

    Search Results

    • 1. Lacey's equation for calculating flood discharge in rivers, is

    • Options
    • A. V = 10.8 R1/2 S1/2
    • B. V = 10.8 R2/3 S1/2
    • C. V = 10.8 R2/3 S1/3
    • D. V = 10.8 R1/3 S2/3
      • Discuss
    • 2. For diversion of flood water of rivers, the type of canal constructed, is

    • Options
    • A. ridge canal
    • B. perennial canal
    • C. inundation canal
    • D. canal.
      • Discuss
    • 3. An outlet is said to be proportional if its flexibility, is

    • Options
    • A. zero
    • B. less than one
    • C. more than one
    • D. one
      • Discuss
    • 4. According to Lacey, depth of scour in a river depends upon the straightness of the reach. If D is the depth of scour in regime flow in a right angled bend, it is

    • Options
    • A. 1.25 D
    • B. 1.50 D
    • C. 1.75 D
    • D. 2.00 D
      • Discuss
    • 5. V and R are the regime mean velocity and hydraulic mean depth respectively in metres. Lacey's silt factor f is

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 6. Which one of the following statements is correct?

    • Options
    • A. The canal system and the drainage system are complementary
    • B. The canal system runs on ridges, gets divided into smaller channels and spreads its water on the land
    • C. The drainage system runs along the lowest line, collects drainage water from the slopes and joins the main stream
    • D. All the above.
      • Discuss
    • 7. For cereal crops the most commonly adopted method of irrigation, is

    • Options
    • A. free flowing method
    • B. check method
    • C. furrow method
    • D. sprinkling method.
      • Discuss
    • 8. In case of a trapezoidal notch fall

    • Options
    • A. top width of the notch is kept between 3/4 th of full water depth above the sill of the notch
    • B. top length of the piers should not be less than their thickness
    • C. splay up stream from the notch section is 45°
    • D. splay down stream from the notch section is
    • E. all the above.
      • Discuss
    • 9. A counter berm is

    • Options
    • A. a horizontal benching provided on the inside slope
    • B. a horizontal benching provided on the outside slope
    • C. a vertical benching provided on the outer edge of the bank
    • D. a vertical benching provided on the inner edge of the bank.
      • Discuss
    • 10. If D1 and D2 are depths of water upstream and down stream of a hydraulic jump, the loss of head at the jump, is

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

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