Exam2win > Engineering > Civil Engineering > Irrigation Water Resources Engineering > part6

Irrigation Water Resources Engineering QUESTIONS AND ANSWERS

Civil Engineering : Irrigation Water Resources Engineering QUESTIONS AND ANSWERS :: part6 : 1 to 5

Following Civil Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :

1.To estimate the magnitude of a flood with a return period of T years, Gumbel's distribution method requires the following data pertaining to annual flood series i) mean value ii) standard deviation iii) length of record iv) coefficient of skew The correct answer is

(i) and (ii)

(i),(iD and (iii)

(i), (ii) and (iv)

(i), (ii), (iii) and (iv)

2.The peak of a 4 hour flood hydrograph is 240 m3/sec . If the rainfall excess is 80 mm and base flow which is constant is 40 m3/sec, then the peak of 4-hours unit hydrograph will be

20 3/sec

25 m3/sec

30 m3/sec

35 m3/sec

3.Instantaneous unit hydrograph is a hydrograph of i) unit duration ii) unit rainfall excess iii) infinitely small duration iv) infinitely small rainfall excess The correct answer is

(i) and (ii)

(i)and(iv)

(ii) and (iii)

(iii) and (iv)

4.If the risk of a flood occurring in the next 10 years is accepted to 10%, then the return period for design should be

1 + (0.9)010

1 - (0.9)�l0

1/(1-0.9�10)

1/(1+ 0.9010)

5.If the demand line drawn from a ridge in a flow mass curve does not intersect the curve again, it indicates that

demand cannot be met by inflow

reservoir was not full at the beginning