Jawaharlal Nehru Technological University Hyderabad
Jawaharlal Nehru Technological University Hyderabad B.Tech II HYDROLOGY Previous Question Paper (May - 2019 - R13)
Part A is compulsory which carries 25 marks. Answer all questions in Part A. Part B consists of 5 Units. Answer any one full question from each unit.
Part A
What is return period?
Answer
The return period (or recurrence interval) is the average time interval between the occurrences of a hydrological event of a given magnitude or greater. It is the reciprocal of the probability of exceedance.
Explain the types of precipitation.
Answer
Precipitation is classified based on the mechanism of lifting the air mass:
- Cyclonic: Caused by the lifting of air due to pressure differences in a cyclone.
- Convective: Caused by the heating of the earth's surface, leading to the rising of warm, moist air.
- Orographic: Caused by air masses being forced to rise over mountain barriers.
What is an ephemeral stream?
Answer
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Describe slope-stage discharge curve with a sketch.
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What is meant by exceedance probability?
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Explain calibration of Current meter.
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Distinguish between single and multipeaked hydrographs.
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Explain the assumptions made in the theory of unit hydrograph.
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Differentiate hydrologic and hydraulic routing.
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Explain what is meant by method of super position?
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Part B
Explain DAD curves with neat sketches.
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Describe double mass curve with a neat sketch.
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Explain how to find optimum number of rain gauges for the given basin.
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Explain different methods of estimating missing precipitation records.
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Describe intensity-frequency-duration analysis with a neat sketch.
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Describe the runoff characteristics of streams.
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Explain the rainfall simulator with a neat sketch.
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Give a pictorial representation of different routes of runoff.
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Describe various corrections applied while using current meter.
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What is stage discharge relation? Explain how the extension of stage discharge curves is carried out.
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What is a flow duration curve? Explain with a neat sketch, how is it constructed.
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Describe automatic stage recorder with a neat sketch.
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Describe the factors affecting flood hydrograph.
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Describe the procedure of construction of master depletion curve with neat sketch.
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Explain with neat sketches, construction of UH from rainfall and runoff records.
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Explain how D hr UH is converted into 2D hr UH applying method of superposition.
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What do you understand by Synthetic unit hydrograph. Explain how it is derived?
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What is S curve hydrograph? How is it constructed? What are its uses?
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