JNTU B.Tech III WATER RESOURCES ENGINEERING-I Previous Question Paper (November/December - 2017 - R13)

Define the terms interception loss and base flow.

What is hydrograph? Draw a single peaked hydrograph and explain its components?

What are the different types of aquifers?

Write a short note on sprinkler method of irrigation.

Describe with the help of a diagram, various forms of a soil moisture. What do you understand by the available moisture?

Explain various types of canals, according to various classification systems.

Differentiate between ground water flows and inter flow.

Write short notes on infiltration indices.

Define S-Curve hydrograph. What are its uses?

Distinguish between influent stream and effluent stream.

What do you understand by precipitation? Explain various types of precipitation.

Find out the ordinates of a storm hydrograph resulting from a 3hr storm with rainfall of 3, 4.5 and 1.5cm during subsequent 3 hours intervals. The ordinates of unit hydrograph are given in the table below. Assume an initial loss of 5mm, infiltration index of 5mm/hour and base flow of 20cumecs.

What are the factors affecting infiltration? Discuss their effect in producing variation in infiltration rate during a storm, and also in producing seasonal and spatial variations in infiltration rate.

Describe the ISI standard evaporation pan with a neat sketch. In what way it is different from USWB class A land pan?

What are the various components of runoff? Describe how each component is derived in the runoff process?

The hourly ordinates of a two hour unit hydrograph are given below. Derive a 6-hour unit hydrograph for the same catchment.

Explain the terms i) Porosity ii) Specific yield iii) Permeability

Explain Darcy’s law. List out the assumptions made in the analysis of steady radial flow into well.

Explain the terms i) Cone of depression ii) Radius of influence iii) Drawdown

When 3.68 million m3 of water was pumped out from an unconfined aquifer of 6.2km2 areal extent, the water table was observed to go down by 2.6m. What is the specific yield of the aquifer? During a monsoon season if the water table of the same aquifer goes up by 10.8m, what is the volume of recharge?

Write a short notes on the following: i) Saturation capacity ii) Field capacity iii) Wilting point iv) Optimum water.

What are the factors affecting duty? How can duty be improved?

Discuss in brief various methods of surface irrigation.

Explain consumptive use and water logging. What are irrigation efficiencies?

For a channel, the discharge Q, rugosity coefficient N, critical velocity ratio m, and the bed width-depth ratio B/D are given. Explain how would you design the channel using Kennedy’s theory?

How do you measure and estimate stream flow?

Using Lacey’s theory, design an irrigation channel for the following data: Discharge Q=50cumecs, Silt factor f=1, Side slopes=

What is flood frequency analysis? How do you compute design discharge over a catchment?