Jawaharlal Nehru Technological University Hyderabad

Jawaharlal Nehru Technological University Hyderabad B.Tech III SOIL AND WATER CONSERVATION ENGINEERING Previous Question Paper (May - 2018 - R15)

B.Tech | III | I | R15 | May - 2018

Answer PaperPaper Code: 125DPMaximum Marks: 75Time: 3 hours

Note: Part A is compulsory (25 marks). Part B consists of 5 Units. Answer any one full question from each unit (10 marks each).

Part A

125 marks
a
Write a short note on the research in soil and water conservation in India.
2 marks

Answer

Research in India is primarily spearheaded by the Indian Council of Agricultural Research (ICAR) through the Central Soil and Water Conservation Research and Training Institute (CSWCRTI), Dehradun. Efforts focus on developing watershed management techniques, erosion control structures, and sustainable land-use practices tailored to diverse agro-climatic zones.

b
Discuss geologic erosion in detail.
3 marks

Answer

Geologic erosion, or natural erosion, is the process by which landforms are worn away by natural agents like water, wind, and ice over long geological periods. It occurs at a slow, steady rate that generally maintains a balance between soil formation and soil loss, contributing to the development of landscapes such as valleys and plains.

c
Explain the mechanism of wind erosion.
2 marks

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d
What are sand dunes and why do you stabilize them?
3 marks

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e
How do you identify the sites for construction of contour bunds?
2 marks

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f
What are the advantages and disadvantages of contour bunding?
3 marks

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g
What is hydraulic radius?
2 marks

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h
How do you estimate roughness of different grasses?
3 marks

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i
Explain how sedimentation reduces the reservoir capacity?
2 marks

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j
How do you use trap efficiency to estimate life of a reservoir?
3 marks

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Part B

210 marks
a
What are the different stages of erosion?
5 marks

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b
Discuss the mechanics of erosion with neat sketches.
5 marks

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OR
310 marks
a
Write and discuss the applications of Modified Universal Soil Loss equation.
5 marks

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b
Explain how the different parameters using soil loss equations are estimated?
5 marks

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410 marks
a
What is time of concentration? Explain any one method of estimating peak runoff.
5 marks

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b
List out all agronomic erosion control measures and discuss them in detail.
5 marks

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OR
510 marks
a
How do you group all the factors that influence the runoff in a river basin. Discuss them in detail.
5 marks

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b
List out all engineering erosion control measures adopted in watersheds and discuss them.
5 marks

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610 marks
a
List all the design parameters of contour bunding. Discuss them in detail.
5 marks

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b
What is a waste weir and how do you design it?
5 marks

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OR
710 marks
a
What is basic cross section for a contour bund? Explain how you fix horizontal and vertical intervals.
5 marks

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b
What are graded bunds? When do you adopt them?
5 marks

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810 marks
a
What are bench terraces and how are they classified?
5 marks

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b
Explain different types of water ways.
5 marks

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OR
910 marks
a
Write expressions for wetted perimeters for different cross sections and show how you calculate hydraulic radius.
5 marks

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b
Discuss the design principles of vegetated water ways.
5 marks

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1010 marks
a
Explain the process of sedimentation from the generation of sediment in the basin to the destination for the sediment into the reservoirs.
5 marks

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b
Draw a diagram showing how the sediment gets deposited in a reservoir and explain.
5 marks

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OR
1110 marks
a
Explain how you estimate the sediment from a catchment area.
5 marks

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b
What are gully control structures? Discuss them in detail.
5 marks

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This page contains the solved question paper with answers of SOIL AND WATER CONSERVATION ENGINEERING from Jawaharlal Nehru Technological University Hyderabad for B.Tech AG III I, May - 2018, R15.

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