Indira Gandhi National Open University (IGNOU) 2006 B.Tech Water Resource Engineering ET - 536A Hydraulic Structures - I - - Question Paper
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B.Tech. Civil (Water Resources Engineering)
Term-End Examination
December, 2006
ET-536(A) : HYDRAULIC STRUCTURES !
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Maximum Marks : 70
Time : 3 hours
Note : Answer any five questions. All questions carry equal marks. Give neat sketches in support of your answers.
State the conditions which are essential for the formation of a hydraulic jump.
Show that for short horizontal channel of rectangular section, the Froude numbers before and after the jump are related by
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3. (a)
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(b)
4. (a) A spillway is a safety valve in a dam. Justify this
statement. 7
(b) Explain the different stream flow measuring devices. 7
5. (a) Explain the various considerations for designing a
barrage. 7
(b) Discuss the main causes of failure of weirs founded
on pervious foundations. 7
How would you select a homogeneous depending upon the materials available ?
6. (a)
dam
Explain the Swedish slip circle method of analysis for testing the stability of an earth dam.
(b)
8. Differentiate between the following :
4x3-=14 2
(a) Overflow and Non-overflow dams
(c) Exit gradient and Safe Exit gradient
(a) Distinguish clearly between a low gravity dam and
high gravity dam.
(b) Derive the expression used for such a distinction.
(c) Determine the limiting height of a low gravity dam of concrete, taking specific gravity of concrete as 2-45 and allowable compressive stress as 345 t/m . 2, 6, 6
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