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tankabanditka [31]
3 years ago
8

How many times has the ITU-R revised the CCIR 601 international standard? A. four B. five C. six D. seven

Engineering
1 answer:
Alex787 [66]3 years ago
8 0

Answer:

b or c I think it's c

Explanation:

..............

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. Using the Newton Raphson method, determine the uniform flow depth in a trapezoidal channel with a bottom width of 3.0 m and si
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Answer:

y  ≈ 2.5

Explanation:

Given data:

bottom width is 3 m

side slope is 1:2

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manning equation is written as

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where R is hydraulic radius

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Q = Av =A 1/n R^{2/3} s^{1/2}

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R =\frac{(3+2y) y}{(3+2\sqrt{5} y)}

Q = (2+2y) y) \times 1/0.015 [\frac{(3+2y) y}{(3+2\sqrt{5} y)}]^{2/3} 0.004^{1/2}

solving for y100 =(2+2y) y) \times (1/0.015) [\frac{(3+2y) y}{(3+2\sqrt{5} y)}]^{2/3} \times 0.004^{1/2}

solving for y value by using iteration method ,we get

y  ≈ 2.5

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