GUJARAT TECHNOLOGICAL UNIVERSITY
BE- SEMESTER-VIII (OLD) EXAMINATION — WINTER 2020
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Subject Code:180601 Date:25/01/2021
Subject Name:Design Of Hydraulic Structures
Time:02:00 PM TO 04:00 PM Total Marks: 56
Instructions:
- Attempt any FOUR questions out of EIGHT questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
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Q.1 (a) Write a short note on classification of Dams. 07
(b) Discuss various external forces acting on gravity dam. 07
Q.2 (a) Explain method of drawing phreatic line when filter is provided at toe. 07
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(b) Figure 1 shows the section of gravity dam (non-overflow section) built of concrete. Compute the following 1)Water Pressure 2) Earthquake pressure 3) Weight of Dam 4) Wave pressure 07
Q.3 (a) Explain the causes of failure of Earthen Dam. 07
(b) What are the basic data required for planning of dams and reservoirs? Discuss different levels in the investigation for a reservoir project. 07
Q.4 (a) Explain Bucket type energy dissipator. 07
(b) What is meant by Canal Regulators. Explain Cross-Regulator with neat sketch. 07
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Q.5 (a) Explain Arch and buttress dam with their advantages and disadvantages. 07
(b) Write a short note on rock fill dam with a neat sketch. 07
Q.6 (a) Explain Bligh’s creep theory . 07
(b) Why spillway are considered “safety valve “ for dams. Classify and write suitability of various spillways. 07
Q.7 (a) Explain Energy dissipation below spillways. 07
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(b) What is meant by hydraulic jump. Classify the different types of jump. 07
Q.8 (a) Explain cavitation in ogee.spillway. 07
(b) Write a short note on types of Stilling basin. 07
Figure(1)
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