CE 383 Final Exam Conceptual
Question and answers 100% correct
2025/2026
The Chezy equation is based on a balance of gravity and friction forces on flow. - correct answer ✔True
Flow after the hydraulic jump is - correct answer ✔Subcritical
The following statement about hydraulic jumps is true - correct answer ✔The hydrostatic force
upstream of a hydraulic jump is less than the hydrostatic force downstream of the jump.
The velocity head in a complex natural channel is typically lower than the velocity head in an engineered
trapezoidal channel (for the same flow rate and cross sectional area). - correct answer ✔False
A best hydraulic section maximizes the ratio of wetted perimeter to cross sectional area. - correct
answer ✔False
The flow-induced shear stress on the side walls of a straight channel is typically less than the shear stress
on the channel bottom. - correct answer ✔True
A normal depth above the critical depth indicates supercritical flow - correct answer ✔False
In steady flow, velocity does not vary temporally - correct answer ✔True
On a topographic map, a valley is most likely indicated by: - correct answer ✔V" shaped contour lines
with the "V" pointing uphill
, A distribution with a positive skew typically has a long tail on the right. - correct answer ✔True
For sanitary sewers, shear stresses are typically calculated to ensure the wall of the pipe won't be
eroded. - correct answer ✔False
Elevation contour lines on a topographic map spaced close together indicate relatively steep slopes. -
correct answer ✔True
A properly functioning broad-crested weir will maintain subcritical flow across the weir. - correct
answer ✔False
For discharge of water over an uncontracted, rectangular, sharp-crested weir, the flow rate is
approximately proportional to the width of the weir. - correct answer ✔True
For open-channel flow in a circular pipe, the maximum flow rate occurs when h/D>0.95. - correct
answer ✔False
A water budget can be used to determine how much water can be sustainably removed from a lake each
year for agriculture. - correct answer ✔True
The probability of a 10-year flood occurring (at least once) within a 10-year period is about 65%. -
correct answer ✔True
Rainfall is typically higher on the leeward side of a mountain. - correct answer ✔False
Convective lifting is associated with the rainfall produced by a warm front. - correct answer ✔False
IDF data (e.g., Atlas 14) indicate that for a 100-yr, 24-hr storm, the intensity is 1.5 in/hr. This means that
the storm will produce 36 inches of rainfall over 24 hours. - correct answer ✔True
Question and answers 100% correct
2025/2026
The Chezy equation is based on a balance of gravity and friction forces on flow. - correct answer ✔True
Flow after the hydraulic jump is - correct answer ✔Subcritical
The following statement about hydraulic jumps is true - correct answer ✔The hydrostatic force
upstream of a hydraulic jump is less than the hydrostatic force downstream of the jump.
The velocity head in a complex natural channel is typically lower than the velocity head in an engineered
trapezoidal channel (for the same flow rate and cross sectional area). - correct answer ✔False
A best hydraulic section maximizes the ratio of wetted perimeter to cross sectional area. - correct
answer ✔False
The flow-induced shear stress on the side walls of a straight channel is typically less than the shear stress
on the channel bottom. - correct answer ✔True
A normal depth above the critical depth indicates supercritical flow - correct answer ✔False
In steady flow, velocity does not vary temporally - correct answer ✔True
On a topographic map, a valley is most likely indicated by: - correct answer ✔V" shaped contour lines
with the "V" pointing uphill
, A distribution with a positive skew typically has a long tail on the right. - correct answer ✔True
For sanitary sewers, shear stresses are typically calculated to ensure the wall of the pipe won't be
eroded. - correct answer ✔False
Elevation contour lines on a topographic map spaced close together indicate relatively steep slopes. -
correct answer ✔True
A properly functioning broad-crested weir will maintain subcritical flow across the weir. - correct
answer ✔False
For discharge of water over an uncontracted, rectangular, sharp-crested weir, the flow rate is
approximately proportional to the width of the weir. - correct answer ✔True
For open-channel flow in a circular pipe, the maximum flow rate occurs when h/D>0.95. - correct
answer ✔False
A water budget can be used to determine how much water can be sustainably removed from a lake each
year for agriculture. - correct answer ✔True
The probability of a 10-year flood occurring (at least once) within a 10-year period is about 65%. -
correct answer ✔True
Rainfall is typically higher on the leeward side of a mountain. - correct answer ✔False
Convective lifting is associated with the rainfall produced by a warm front. - correct answer ✔False
IDF data (e.g., Atlas 14) indicate that for a 100-yr, 24-hr storm, the intensity is 1.5 in/hr. This means that
the storm will produce 36 inches of rainfall over 24 hours. - correct answer ✔True
