JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD B.Tech II HYDROLOGY Previous Question Paper (December - 2018 - R13)
Part A is compulsory. Answer all questions. Part B consists of 5 Units. Answer any one full question from each unit.
Part A
Distinguish between Isohyets and Isochrones.
Answer
Isohyets are lines joining points of equal rainfall magnitude over an area for a given duration. Isochrones are lines joining points on a catchment that have the same time of travel for surface runoff to reach the basin outlet.
Explain the significance of Weibul’s method.
Answer
Weibull's method is used to calculate the exceedance probability of hydrological events, such as annual flood peaks. It is significant because it provides an unbiased estimate of the plotting position for frequency analysis, given by the formula:
where m is the rank of the event and N is the total number of observations.
Differentiate perennial and intermittent streams.
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Describe slope-stage discharge curve with a sketch.
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Explain staff gauge and wire gauge stage recorders.
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Differentiate between vertical axis and horizontal axis meters.
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What is meant by isolated and complex storms.
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Explain linear response and time invariance.
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Differentiate Unit Hydrograph and Synthetic Unit Hydrograph.
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What are the objects of flood routing?
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Part B
Explain different types of cyclones.
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Describe the practical applications of Hydrology.
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Explain the different methods of estimating missing rainfall data at a particular station.
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What is Return Period? Give few formulae which are used to determine it.
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Describe moving boat method with a neat sketch.
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Describe the runoff characteristics of streams.
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Explain the infiltration indices with a suitable example.
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Describe the process of runoff with a schematic diagram.
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Describe the automatic stage recorder with neat sketches.
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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 the rational method and curve number techniques.
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Describe different methods of separating the base flow from the total runoff with neat sketches.
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Describe the procedure of derivation of average unit hydrograph from several storms of the same duration.
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Define Unit Hydrograph. What are the assumptions made in its theory? What are its limitations?
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Write short note on flood mitigation and flood plain management.
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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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Describe Muskingum method with neat sketches.
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