Civil Engineering - Irrigation - Discussion
Discussion Forum : Irrigation - Section 2 (Q.No. 28)
28.
The Lacey's regime velocity is proportional to
Discussion:
24 comments Page 1 of 3.
Musab said:
7 years ago
The correct answer is R^3/4 S^1/2.
R^2/3 S^1/2 is Mannings equation.
And other equation by Lacey is 16 R^2/3 S^1/3 used for calculating the flood discharges in rivers.
R^2/3 S^1/2 is Mannings equation.
And other equation by Lacey is 16 R^2/3 S^1/3 used for calculating the flood discharges in rivers.
Prince said:
4 years ago
There are 2 equations:
Lacey's regime velocity: v = 10.8 R^2/3 S^1/2.
Lacey's non-regime velocity: v = 1/Na R^3/4 S^1/2.
So, the answer should be D.
Lacey's regime velocity: v = 10.8 R^2/3 S^1/2.
Lacey's non-regime velocity: v = 1/Na R^3/4 S^1/2.
So, the answer should be D.
(3)
Saqib said:
4 years ago
@Prince
There are 2 equations:
Lacey's regime velocity: v = 10.8 R^2/3 S^1/3.
Lacey's non-regime velocity: v = 1/Na R^3/4 S^1/2.
There are 2 equations:
Lacey's regime velocity: v = 10.8 R^2/3 S^1/3.
Lacey's non-regime velocity: v = 1/Na R^3/4 S^1/2.
(7)
Priya said:
8 years ago
Regime flow equation by Lacey's theory is,
V = 10.8.R^2/3.S^1/3.
So, Answer (D) and Bed slope (S) to the power of 1/3 not 1/2.
V = 10.8.R^2/3.S^1/3.
So, Answer (D) and Bed slope (S) to the power of 1/3 not 1/2.
Mahe said:
8 years ago
None of the option is true because according to the formula the powers are 2/3 & 1/3 for R & S respectively.
Chinmoy said:
7 years ago
You are absolutely right @Mahe.
All other answer is based on Manning's formula.
All other answer is based on Manning's formula.
Viki said:
6 years ago
Lacey's regime flow velocity is option (D).
nonregime flow velocity option (C).
nonregime flow velocity option (C).
(1)
Akshay kumar p said:
6 years ago
Laceys regime equation is 1/n(r^3/4s^1/3).
10.8r^2/3s^1/3 is laceys theroy.
10.8r^2/3s^1/3 is laceys theroy.
(2)
Sudip said:
8 years ago
According to Lacey's formula,
Regime flow equation V= 10.80 R^2/3 S^1/2.
Regime flow equation V= 10.80 R^2/3 S^1/2.
Ramavtar said:
8 years ago
Lacey's formula.
Regime flow equation V= 10.80 R^2/3 S^1/2.
Regime flow equation V= 10.80 R^2/3 S^1/2.
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