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Question
Match List-I with List-II and select the correct answer using the code given below the lists:

List-I

List-II

A. Rehbock formula

1.  Sutro weir

B. Francis formula

2.  Rectangular suppressed weir

C. A special trapezoidal weir

3.  Broad-crested weir

D. Linear proportional weir

4.  Cippolletti weir

 

5.  Rectangular contracted weir
Codes:
A    B    C    D
A.
2    3    4    1
B.
5    3    4    2
C.
2    5    4    1
D.
1    5    3    2
Answer ( Option C)

2    5    4    1

Solution

•    Rehbock formula gives the expression for discharge over a rectangular suppressed weir as follow
• Francis found that due to end contraction the effective width of the nappe is reduced by 0.1 H.
The effective length of the weir (L – 0.1 nH)
• Cippoletti notch (or weir) is a trapezoidal notch which gives discharge equal to the discharge that would pass over a rectangular notch. It is done to counter balance the end contration. 
Discharge over cippoletti weir is given by
• Linear proportional weir is a sutro weir The discharge over the weir is given by

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