What is the primary purpose of Chezy's equation?
A
To calculate hydraulic radius B
To determine channel slope C
To calculate mean velocity in open channels D
To find flow area
Analysis & Theory
Chezy’s equation is used to calculate the mean velocity of flow in open channels.
Which formula represents Chezy’s equation?
A
V = C + RS B
V = C * R * S C
V = C√(RS) D
V = R²/S
Analysis & Theory
Chezy’s equation is: V = C√(RS)
In Chezy’s equation, what does ‘R’ represent?
A
Radius of curvature B
Hydraulic radius C
Channel radius D
Flow radius
Analysis & Theory
R is the hydraulic radius: R = Area / Wetted Perimeter.
What is Manning’s equation for velocity (V)?
A
V = nR²S B
V = C√(RS) C
V = (1/n) R²/3 S¹/2 D
V = (1/n) R^(2/3) S^(1/2)
Analysis & Theory
Manning’s equation: V = (1/n) R^(2/3) S^(1/2)
Which parameter does Manning’s equation NOT directly require?
A
Roughness coefficient (n) B
Slope (S) C
Hydraulic radius (R) D
Chezy's constant (C)
Analysis & Theory
Manning’s equation does not require Chezy’s constant directly; it calculates velocity without it.
What is the formula for Chezy’s constant using Manning’s expression?
A
C = R / n B
C = R^(1/2) * S^(1/2) C
C = (1/n) R^(1/6) D
C = (1/n) R^(2/3)
Analysis & Theory
From Manning’s form: C = (1/n) * R^(1/6)
Kutter’s formula is used to compute:
A
Slope of the channel B
Wetted perimeter C
Velocity of flow D
Chezy's constant (C)
Analysis & Theory
Kutter’s formula provides the value of Chezy’s constant (C).
In Manning’s formula, 'n' is known as:
A
Velocity coefficient B
Energy loss factor C
Slope coefficient D
Roughness coefficient
Analysis & Theory
'n' is the roughness coefficient based on the channel material.
Which is more commonly used in modern practice: Kutter’s or Manning’s equation?
A
Kutter’s B
Manning’s C
Chezy’s original form D
Darcy’s equation
Analysis & Theory
Manning’s equation is simpler and widely accepted in engineering practice.
If Chezy’s constant C increases, what happens to the flow velocity?
A
It decreases B
It remains the same C
It increases D
It becomes zero
Analysis & Theory
Since V = C√(RS), higher C results in higher velocity.