CUSAT Previous Question Papers BE CE 6th Semester
Water Resources and Irrigation Engineering September 2011
CE 606 A/B Water Resources and Irrigation Engineering
(Answer ALL questions)
I. (a) Explain the different methods to compute the runoff due to precipitation.
(b) Distinguish between surface runoff and subsurface runoff.
(c) Describe the geological and hydrological investigations conducted while planning a reservoir.
(d) Define duty and delta. State the factors affecting duty.
(e) Compare Kennedy’s and Lacey’s silt theories.
(f) With a neat sketch describe the layout of headworks.
(g) Write short notes on Ogee-shaped spillway.
(h) Enumerate the causes of failures of an earthem dam.
II. What is evaporation? What are the factors affecting evaporation? Explain any one method to measure evaporation.
III. (a) Distinguish between convective precipitation and orographic precipitation.
(b) Define unit hydrograph. What are the two important assumptions made?
(c) Explain the limitations of UH.
(d) Rainfall data for five stations are shown below. Find the mean rainfall by Theissen polygon method.
IV. (a) Describe with neat sketches different types of tube wells.
(b) Derive the expression for discharge from a well fully penetrating a confined acquifer.
V. (a) Explain the steps involved in fixing the reservoir capacity using Mass-curve. Draw a neat sketch.
(b) What are the factors on which the selection of site of a reservoir depends?
VI. (a) Draw neat sketches and explain the various components of head works.
(b) State and explain Bligh’s creep theory.
VII. (a) What do you mean by “balancing depth of cut” in irrigation canal design?
(b) What are the functions of a cross regulator across a canal?
(c) Explain the circumstances under which a canal drop becomes necessary.
VIII. Explain the various forces acting on gravity dam.
IX. (a) What are the different types of earthen dams?
(b) Determine the critical height of a low gravity dam of concrete, taking the specific gravity of concrete as 2.4 and allowable compressive stress as 3400 KN/m .