IGNOU B.Tech Civil ET-533(A) : IRRIGATION ENGINEERING June 2019 Question Paper

IGNOU Old Question Paper 

No. of Printed Pages : 3 ET-533(A) 

B. TECH. CIVIL (WATER RESOURCE ENGINEERING) (BTWRE) 

Term-End Examination 

June, 2019 

ET-533(A) : IRRIGATION ENGINEERING 

Time : 3 Hours Maximum Marks : 70 

Note : Attempt any five questions. All questions carry equal marks. Use of scientific calculator is permitted. Assume any data suitably, if not given. 

Write a note on irrigation water quality standards. Also discuss the quality variation based on source of water. 10 

(b) Salt concentration of a sample is measured as 10 milli mho/cm. Express this in ppm. 4 

2. (a) Define Evapotranspiration. Draw a neat sketch showing variation of crop coefficient (Kc) with percentage growth of a plant and discuss it briefly. 7 

(b) In an agricultural field, the double ring infiltrometer test provided the following results : 7 

t = 60 minutes f = 3.8 cm 

t = 180 minutes f = 7.8 cm 

Evaluate the coefficients in Kostiakov equation. 

3. (a) Explain drip irrigation method. Also discuss the advantages and disadvantages of this method. 7 

(b) Discuss the various climatic zones of India. 7 

4. (a) Discuss any one method to estimate the water requirement of a crop. Explain the term "Irrigation Scheduling". 7 

(b) Derive the steady state drainage formula. Also, state assumptions made. i 7 

5. (a) Compare the advantages and disadvantages of sprinkler irrigation vs. surface irrigation methods.7 

(b) Discuss the criteria for the selection of pumps for irrigation. 7 

6. Explain the four-corner method for the calculation of cut and fill volumes. 14 

7. Write short notes on any two of the following : 7 each 

(a) Sardar Sarovar Rehabilitation Policy 

(b) Types of infiltrometers 

(c) Equipments used for land grading 

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