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  • Question

  • The ratio of the rate of change of discharge of an outlet and parent channel, is known as


  • Options
  • A. efficiency
  • B. sensitivity
  • C. flexibility
  • D. modular limit.

  • Correct Answer
  • flexibility 

    Explanation
    Flexibility: It provides a criteria for judging the behaviour of modules and semi-modules. It is generally denoted by letter 'F'. It is the ratio of the rate of change of outlet discharge to the rate of change of discharge of the parent channel.

    • More questions

    • 1. The self-cleansing velocity of water flowing through pipe lines, is

    • Options
    • A. 2 metres/sec
    • B. 1 metre/sec
    • C. 0.5 metre/sec
    • D. 0.25 metre/sec.
      • Discuss
    • 2. The semi-infinite snow albedo is proportional to the square root of the grain radius :

    • Options
    • A. in the 0.2 to 0.4 ?m wave length region
    • B. in the 0.4 to 0.8 ?m wave length region
    • C. in the 0.8 to 1.2 ?m wave length
    • D. None of these
      • Discuss
    • 3. To avoid the tendency of separation of liquid flow, the most suitable ratio of the diameters of the throat and the pipe, is

    • Options
    • A. 1/4 to 1/8
    • B. 1/3 to 1/2
    • C. 1/2 to 3/4.
    • D. none of these.
      • Discuss
    • 4. The efficiency of a pump may be taken as

    • Options
    • A. 0.55
    • B. 0.60
    • C. 0.65
    • D. 0.70
      • Discuss
    • 5. A wooden block fixed on back side of a door frame on its post, is known as

    • Options
    • A. cleat
    • B. stop
    • C. horn
    • D. none of these.
      • Discuss
    • 6. If a 30 m chain diverges through a perpendicular distance d from its correct alignment, the error in length, is

    • Options
    • A.
    • B.
    • C.
    • D.
    • E. .
      • Discuss
    • 7. In sewers the highest non-scouring velocity is achieved in

    • Options
    • A. glazed bricks sewers
    • B. cast iron sewers
    • C. cement concrete sewers
    • D. stone ware sewers.
      • Discuss
    • 8. The difference in gradients after full super-elevation and the initial alignment of a road, is known as

    • Options
    • A. ruling gradient
    • B. rising gradient
    • C. compensated gradient
    • D. differential gradient
    • E. none of these.
      • Discuss
    • 9. The radius of influence is

    • Options
    • A. radius of the main well
    • B. distance from the wall of main well to the point of zero draw down
    • C. distance from the centre of main well to the point of zero draw down
    • D. none of these.
      • Discuss
    • 10. The initial setting time of lime-pozzolana, is

    • Options
    • A. 30 minutes
    • B. 60 minutes
    • C. 90 minutes
    • D. 120 minutes.
      • Discuss

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