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Seat No.: Enrolment
GUJARAT TECHNOLOGICAL UNIVERSITY
PDDC SEMESTER-VI EXAMINATION WINTER 2018
Subject Code:X60603 Date: 20/11/2018
Subject Name: Irrigation Engineering
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Q.1

Discuss the causes of failures of earthen dams.
07

Define duty and delta. Discuss the factors affecting duty.
07
Q.2

Discuss the benefits and ill effects of irrigation.
07

Discuss briefly the factors affecting the consumptive use of water.
07
OR

Define: field capacity. Permanent wilting point. Ultimate wilting point.
Available moisture.
07
Q.3

Distinguish clearly between a weir and barrage.
07

Explain khosla's method of independent variables.
07
OR
Q.3

Discuss the various silt control devices used for sediment control in the off taking canal.
07

Describe with the help of neat sketches the various types of cross drainage work.
07
Q.4

What are the advantages and disadvantages of lining a canal?
07

Discuss kennedy's theory for the design of irrigation canal in alluvial soil.
07
OR
Q.4

Write short note on distributary head regulator.
07

What is water logging? What are the ill effects of water logging?
07
Q.5

Define: Saturation capacity. Crop period. Base period. Gross command area.
.
07

List various irrigation efficiencies and explain any one in detail.
07
OR
Q.5

Explain Bligh's creep theory for the design over pervious foundation.
07

Discuss the forces acting on a gravity dam.
07