B.TECH - Semester 5 water resources engineering Question Paper 2021 (mar)
Practice authentic previous year university questions for better exam preparation.
Sample Questions
- Enlist the factors to be considered in alignment of irrigation canals.
- State Darcy's law and comment on its validity.
- Explain the phenomenon of meandering of alluvial rivers. ( $5 \times 4=20$ Marks) PART - B Answer one questions from each Module carries 20 marks. Module - I
- Explain different forms of precipitation.
- Write a note on irrigation efficiencies.
- (a) In a catchment area the average annual precipitation observed at five raingauge stations are $750,1000,900,650$ and 500 mm . What is the percentage accuracy of existing network? Find the number of additional raingauge stations required if the per...
- (b) Differentiate rainfall mass curve and hyetograph. How will you prepare hyetograph from mass curve? OR
- (a) Explain rational method of runoff computation. State its limitations.
- (b) Ordinates of a 2 hr UH of a catchment is given. Derive 6 hr UH hydrograph of the catchment | Time (hr) | 0 | 2 | 4 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 22 | | :--- | :---: | :---: | :---: | :---: | :---: | :---: | :---: | :---: | :---: | :---...
- (a) The CCA for a distributary is 15000 ha. The intensity of irrigation for Rabi is $40 \%$ and for Kharif is $15 \%$. If the total water requirement of the two crops are 37.5 cm and 120 cm and their periods of growth are 160 days and 140 days respec...
- (b) Give the typical cross section of an unlined canal partially in cutting and partially in filling. Write a note on balancing depth.
- (a) State the limitations of Kennedy's theory. 5
- (b) Obtain an expression for Lacey's regime scour depth.
- (c) Design an irrigation canal for the following data : Discharge $=20$ cumec; Lacey's slit factor $=1$.
- (a) A well of 30 cm diameter fully penetrates a confined aquifer of thickness 15 m . When pumped at a steady rate of 30 lps , the drawdowns observed in wells at radial distances of 10 m and 40 m are 1.5 m and 1 m respectively. Compute the radius of i...
- (b) Define
- (i) Storativity (ii) Transmissibility.
- (a) Explain how will you find the yield of an open well? 10
- (b) Explain the features of any two types of tube wells with sketches. Module - IV
- Explain in detail the different types of river training works with sketches. ..... 20 OR
- (a) Explain reservoir sedimentation and its control. ..... 10
- (b) Write down the procedure of estimation of useful life of reservoirs. ..... 10 $$ \text { ( } 4 \times 20=80 \text { Marks) } $$