Ranchi University 2010-2nd Sem B.Tech Water Resource Engineering III Regular s, WATER RESOURCES ENGINEERING-II (Civil Engineering) - Question Paper

III B.Tech II Semester Regular Examinations, April 2010
WATER RESOURCES ENGINEERING-II
(Civil Engineering)
Time: three hours Max Marks: 80
ans any 5 ques.
All ques. carry equal marks
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1. (a) Draw a neat sketch showing different components of a canal headwork. Briefly
discuss the functions of every component.
(b) What is the difference ranging from a weir and a barrage. Why is a barrage pre-
ferred to weir in modern times. [8+8]
2. (a) discuss the design criteria and function of a cistern given beneath a canal
fall.
(b) What is meant by proportional fall. With a neat sketch, illustrate any pro-
portional fall and discuss how proportionality is maintained. [8+8]
3. (a) State briefly how you will fix up the location and capacity of canal outlet.
(b) State requirements for an ideal outlet.Distinguish ranging from a modular, a non-
modular and a semi-modular outlet. provide on example of every kind. [8+8]
4. (a) discuss the necessity of a cross-drainage structure. How do you classify cross-
drainage works.
(b) State how will you determine
i. Contraction of canal waterway
ii. Waterway for the drain, and
iii. Thickness of floor for the drain in the transition reach in case of a siphon
aqueduct. [8+8]
5. (a) explain the factors influencing the selection of a site for a proposed dam.
(b) Write demerits of buttress dams. [8+8]
6. The subsequent figure six provide profile of a gravity dam with reservoir level as shown.
If the co-efficient of friction is 0.8 and weight density of concrete is 2.4t/m3, Check
the safety of the dam against sliding and overturning. presume any other data not
given. [16]
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Code No: V3204/R07 Set No. 1
Figure 6
7. define with neat sketches the different seepage control measures through:
(a) Body of earthen dam
(b) Foundation of earthen dam. [16]
8. Write the formula for calculating the discharge capacity of an Ogee spillway. How
does 'coefficient of discharge' in the formula varies with
i) Depth of approach.
ii) Slope of upstream face of the spillway.
iii)Submergence of the spillway by the tail water
iv)The ratio of design head to true head over the spillway [16]
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Earning:   Approval pending.