LESSON 4
PRACTICE EXERCISE
ANSWER KEY AND FEEDBACK
Item
Correct Answer and Feedback
1.
B
The Equation of Continuity
Third Assumption. The equation of continuity... (page 4-3)
2.
D
Is the slope of the channel bottom
Hydraulic Slope, S. The hydraulic slope will be... (page 4-5)
3.
A
Interceptor ditch
Diversion Ditch. It is often used in... (page 4-6)
4.
A
The velocity is less than 60 cfs.
Triangular or V. The triangular or V-shaped ditch is good... (page 4-8)
5.
A
Symmetrical trapezoidal
Table 4-2 (page 4-7)
6.
A
2
Table 4-1 (page 4-4)
7.
A
V = 6.0 R = 1.7
Table 4-1 and Figure 4-5 (page 4-4 and page 4-17)
EN5465
4-26
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