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  • Question
  • If E1 and E2 are the specific energies at the start of back water curve and at the maximum rise of water respectively and ib and ie are the head slope and the energy line slope respectively, the length of back water (L) is given by


  • Options
  • A. If E1 and E2 are the specific energies at the start of back water curve and at the maximum rise of w
  • B. If E1 and E2 are the specific energies at the start of back water curve and at the maximum rise of w
  • C. If E1 and E2 are the specific energies at the start of back water curve and at the maximum rise of w
  • D. None of these.

  • Correct Answer
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    • Options
    • A. 3 years
    • B. 3.5 years
    • C. 4 years
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    • 2. Chlorination of water does not remove

    • Options
    • A. ammonia content
    • B. B.O.D.
    • C. organic matter content
    • D. dissolved oxygen.
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    • 3. If the loss due to friction in pipes is 4 m, the total losses in strainer and bends may be taken as

    • Options
    • A. 0.10 m
    • B. 0.20 m
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    • D. 1.0 m.
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    • 4. Stoke's law does not hold good if the size of particle is smaller than

    • Options
    • A. 0.0002 mm
    • B. 0.002 mm
    • C. 0.02 mm
    • D. 0.2 mm
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    • 5. Stoneware sewers are available in size

    • Options
    • A. 10 cm
    • B. 15 cm
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    • 6. The diameter of main bars in R.C.C. columns, shall not be less than

    • Options
    • A. 6 mm
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    • Options
    • A. butress
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    • 8. The product of CAF (S P) and PWF (S P) is:

    • Options
    • A. 1/2
    • B. 1
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    • Options
    • A. 1.0
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