Related Questions

A weir is said to be narrow-crested weir, if the width of the crest of the weir is __________ half the height of water above the weir crest.
A Equal to
B Less than
C More than
D None of these
A weir is said to be broad crested weir, if the width of the crest of the weir is ________ half the height of water above the weir crest.
A Equal to
B Less than
C More than
D None of these
The discharge passing over an ogee spillway is given by (where, L is effective length of spillway crest and H is the total head over the spillway crest including velocity head.)
A $${\text{CL}}{{\text{H}}^{\frac{3}{2}}}$$
B $${\text{CH}}{{\text{L}}^{\frac{3}{2}}}$$
C $${\text{CL}}{{\text{H}}^{\frac{5}{2}}}$$
D $${\text{CL}}{{\text{H}}^{\frac{1}{2}}}$$
As compared to crest of the normal portion of the weir, the crest of the under sluice portion of weir is kept at
A lower level
B higher level
C same level
D any of the above depending on the design
In a broad-crested weir, the discharge is maximum if the head of water on the downstream side of weir is __________ the head of water on the upstream side of weir.
A Equal to
B One-third
C Two-third
D Three-fourth
When the water level on the downstream side of a weir is above the top surface of a weir, the weir is known as
A Narrow-crested weir
B Broad-crested weir
C Ogee weir
D Submerged weir
In a chute spillway, the flow is usually
A uniform
B subcritical
C critical
D super critical
A weir is used to measure the large water discharge rate from a river or from an open channel. A weir is not of __________ shape.
A Circular
B Rectangular
C Triangular
D Trapezoidal
The ratio of the discharge over a trapezoidal crest to a rectangular crest of Sarda falls of identical parameters, is
A 1.084
B 1.074
C 1.064
D 1.054
The depth of the crest of a scouring sluice below the crest of a head regulator, is generally kept
A 0.20 m
B 1.20 m
C 2.20 m
D 3.20 m

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