Indira Gandhi National Open University (IGNOU) 2006 B.Tech Water Resource Engineering ET - 536B Hydraulic Structures - II - - Question Paper
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B.Tcch. Civil (Water Resources Engineering)
Term-End Examination
December, 2006
ET-536(B) : HYDRAULIC STRUCTURES-II
Time : 3 hours Maximum Marks : 70
Note : Answer any five questions. All questions carry equal marks. Use of calculator is permitted.
1. (a) Draw a typical layout of a canal distribution system
and explain the functions of its various parts. 7
(b) What do you mean by cross drainage works ? Explain
their necessity. 7
2. (a) Using Laceys basic regime relations, show that
P = 4-75 \fQ where all the terms have their usual meaning. 7
.(b) Design an irrigation channel in alluvial soil according
to Laceys silt theory, given the following data : 7
Longitudinal slope of channel, S = -
4900
Laceys silt factor, f = 1-00 Channel side slopes, S = : 1
3. (a) Explain the advantaged and disadvantages of concrete
lining. 7
(b) Explain the circumstances under which Sarda type
fall is best suited. Also describe its salient features. 7
4. (a) What do you mean by sensitivity of an outlet ? Show
that sensitivity (S) and flexibility (F) can be expressed as S = nF. 7
(b) Explain the various design parameters of an outlet.
Discuss the significance of each. 7
5. (a) Describe the functions of a cross regulator. 7
(b) How would you orient a canal offtake to minimise
silt entry into the canal ? 7
6. (a) Describe the particular river training measures
required for stabilisation of a river channel. 7
(b) Explain the measures of controlling floods in a river. 7
7. Differentiate between the following :
4x3-
(a) Watershed and Side slope canals
(b) Kennedys and Laceys silt theory .
(c) Canal and Distributory Head Regulator
(d) Levees and Flood walls
8. Write short notes on the following :
4x3-
2
(a) Canal Alignment
(b) Sediment Transport
(c) Methods of River Training
(d) Design of Guide Banks
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