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Irrigation Water Resources Engineering - Interview Questions and Answers

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16. The stage of river carrying a discharge of Q m7sec at a point is 10 m and slope of water surface is (1/4000). The discharge of a flood at the same point and same stage of 10 m with a water surface slope of(l/1000)willbe
A. V2 Q m3/sec
B. 0.5 Q mVsec
C. 2 Q m3/sec
D. 4 Q m3/sec
Explanation:
17. The maximum rainfall depth of 300 mm in 24 hours has a return period of 100 years. The probability of 24 hours rainfall equal to or greater than 300 mm occurring at least once in 10 years is given by
A. (0.99)10
B. 1 - (0.99)10
C. (0.9)'00
D. l-(0.9)100
Explanation:
18. A river training work is generally required when the river is
A. aggrading type
B. degrading type
C. meandering type
D. both (a) and (b)
Explanation:
19. Lining of irrigation channels
A. increases the waterlogging area
B. decreases the waterlogging area
C. does not change the water logging area
D. none of the above
Explanation:
20. Interception losses are due to i) evaporation ii) transpiration iii) stream flow The correct answer is
A. only (i)
B. (i)and(ii)
C. (ii) and (iii)
D. (i), (ii) and (iii)
Explanation:
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