E 06000CE309122001 Pages: 2

Reg No.: Name:
APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY

Fifth Semester B.Tech Degree (S,FE) Examination January 2022 (2015 Scheme)
Course Code: CE309
Course Name: WATER RESOURCES ENGINEERING

Max. Marks: 100 Duration: 3 Hours
PARTA
Answer any two full questions, each carries 15 marks. Marks
1 8) Whatare the different methods of representing rainfall data? (5)

b) What are the methods to prepare probable maximum rainfall chart and what is the (5)

significance of finding out probable maximum rainfall?

c) Explain any one method of measuring rainfall. (5)
2 a) Whatare the basic concepts in unit hydrograph theory? (5)
b) Distinguish between hyetograph, storm hydrograph and direct runoff hydrograph. (5)
c) What is infiltration index? What are the different types of infiltration indices? (5)

3 ஐ Ordinate of 6 hrs UH for a basin are given below. Derive நட UH from it by S- curve (12)

method
Time(hrs)
20 | 35 | 49 | 43 | 35 | 28 | 22 | 17 | 12
11111111111111
b) What are the different methods of estimating runoff? (3)
PART ‏تا‎

Answer any two full questions, each carries 15 marks.
4 a) Duty and delta are two way of representing the water requirement of crop. Justify the (5)
statement.
b) Suggest the best method of irrigation for the following crops. Justify the answer. (2)
1) rice 2) pulses 3) orchard plants (008. apple) 4) tea
c) A crop is to be grown in a field having field capacity 25% and permanent wilting point (8)
15%.Find the storage capacity in 75 cm depth of soil, if the dry weight of the soil is 1.5
gm/cc. When the average soil moisture falls to 20 %, the irrigation to be given, find the water
depth to be supplied to the field if the application efficiency is 75%. Also, calculate the
amount of water needed at the canal outlet assuming 15% of the outlet discharge loss

throughout the movement of water?

Page 1 of 2