LESSON 4
PRACTICE EXERCISE
The following items will test your grasp of the material covered in this lesson. There is only one correct answer
for each item. When you complete the exercise, check your answer with the answer key that follows. If you
answer any item incorrectly, study again that part of the lesson which contains the portion involved.
1.
"Within the section under consideration, energy is neither created nor destroyed" is an assumption of--
A.
Manning's Equation.
B.
The Equation of Continuity.
C.
The hydraulic radius.
D.
The wetted perimeter.
2.
The hydraulic slope, S,-
A.
Carries water away from the construction site in a laminar flow.
B.
Is the dope of the wetted perimeter.
C.
Is the slope caused by exceeding "n".
D.
Is the slope of the channel bottom.
3.
The diversion ditch is often used in conjunction with a(n)-
A.
Interceptor ditch
B.
Diversion ditch
C.
Culvert
D.
Weir notch
4.
The triangular ditch shape is normal choice when-
A.
The flow is less than 60 cfs.
B.
The quantity is greater than 60 cfs.
C.
There is no possibility of vehicle hazard.
D.
The ditch is an interceptor ditch.
4-23
EN5465
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