Irrigation Engineering — Summer 2022

Distinguish between a weir and a barrage

Enumerate various types of lining. Also give necessity of canal lining.

Discuss scope of irrigation engineering

Why it is necessary to provide a fall in a canal?

Explain irrigation system based on source from which water is drawn.

Describe various causes of failures of a weir on pervious foundation and their control measures.

Design lined trapezoidal shaped concrete canal in a section to carry a discharge of 350 cumec at a slope of 20 cm/km. Take Manning’s co- efficient as 0.017, side slope of 1.5:1 and B/D = 4.

Define following terms: (1) Permanent wilting point (2) Readily available moisture (3) Intensity of irrigation

Enumerate important parts of a gravity dam and write brief note on drainage galleries.

Explain Khosla,s method of independent variables.

Define canal outlet. Write brief note on any one type of canal outlet.

Discuss various factors to be considered while selecting suitable site for a dam

Define term duty. Also discuss various factors affecting duty of water.

Write a short note on contraction joints in a dam.

Explain following terms for canal cross-section. (1) Berm (2) Spoil Banks

Discuss various reasons for hydraulic and seepage failure of earthen dams.

State function of following canal regulatory works. (1) King’s vanes (2) Curved wings (3) Bed bars

Enlist various components and limitations of sprinkler irrigation system

Explain stepwise procedure for designing an alluvial channels using Kennedy’s theory.

Write functions of cross regulator.

Discuss various drainage systems used for effective control of water logging.1

Enumerate various forces acting on a gravity dam. Discuss uplift pressure, wave pressure and silt pressure briefly.

Write a brief note on parshall flame.

Differentiate between: (1) Aqueduct and super passage (2) Syphon aqueduct and canal siphon

Describe various causes and preventive measures of water logging.