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IRRIGATION ENGINEERING

Irrigation Engineering
For an annual flood series arranged in descending order of magnitude, the return for a magnitude listed at position period m in a total data N is

(N+l)/m
N/(m+l)
m/N
m/(N+l)

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Irrigation Engineering
The width of a dowla is generally kept between 30 to 60 cm and its height above the road level should invariably be more than

30 cm
40 cm
10 cm
20 cm

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Irrigation Engineering
The ratio of the discharge over a trapezoidal crest to a rectangular crest of Sarda falls of identical parameters, is

1.074
1.064
1.084
1.054

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Irrigation Engineering
A fall in a canal bed is generally provided, if

Designed bed slope exceeds the ground slope
Ground slope exceeds the designed bed slope
Ground slope is practically the same as the designed bed slope
None of these

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Irrigation Engineering
As compared to gravity dams, earthen dams

require sound rock foundations
require less skilled labour
are costlier
are less susceptible to failure

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