Exam Details
| Subject | Hydrology | |
| Paper | ||
| Exam / Course | B.Tech. Civil (Construction Management) / (Water Resources Engineering)/ (Aero Space Engineering) BTCM-BTWRE | |
| Department | School of Engineering & Technology (SOET) | |
| Organization | indira gandhi national open university | |
| Position | ||
| Exam Date | June, 2016 | |
| City, State | new delhi, |
Question Paper
Explain the term hydrologic cycle with a suitable sketch and describe various processes responsible for it. Draw a block diagram representing the complete hydrologic system.
Describe the Thiessen polygon and Isohyetal methods for estimating the average depth of precipitation over a catchment.
Explain the process of evaporation and evapotranspiration. What are the factors affecting these processes How will you estimate evaporation loss from a lake?
Explain different indices for estimating excess rainfall.
State the relationship between rainfall and run-off. Discuss the factors that affect the run-off. How will you calculate the storm run-off, snow-melt and seasonal run-off Explain in brief.
What is the main difficulty in using the slope-area method of discharge measurement? In a rectangular channel, 15 m wide, depth of flow is 3.5 m and area of cross-section is 52·5 m^2 at one section and 3·1 m and 51·0 m^2 respectively at the other section 250 m apart. The drop in the water surface elevation was found to be 0·11 m. If Manning's coefficient is 0.015, estimate the discharge through the channel.
Define Unit Hydrograph and describe its basic theory. How can you show that the unit hydrograph represents a deterministic model of a watershed?
What is the probability that a 5-year flood will
occur four times in a 10-year period?
not occur at all in a 10-year period?
What are the basic assumptions made in the frequency analysis Explain the characteristics of the data required for such type of analysis.
While designing any hydraulic structure,
what is the need of risk analysis
what should be the return period
List and discuss various techniques available to route the flood waves through open channels and reservoirs.
In an area of 100 hectare, it is observed that water table drops by 5 m. Taking the porosity of the aquifer as 0.3, and the specific retention as 0.1, find the specific yield and change in storage in hectare-metres.
State the design requirements of an engineering hydraulic structure for flood mitigation.
State the relationship between flood forecasting and methods of hydrologic analysis. Outline the procedure to forecast floods.
8. Write short notes on any four of the following:
Drought Indices
Low Flow Analysis
Ground Water Deficit
Acidity
Infiltration Curve
Describe the Thiessen polygon and Isohyetal methods for estimating the average depth of precipitation over a catchment.
Explain the process of evaporation and evapotranspiration. What are the factors affecting these processes How will you estimate evaporation loss from a lake?
Explain different indices for estimating excess rainfall.
State the relationship between rainfall and run-off. Discuss the factors that affect the run-off. How will you calculate the storm run-off, snow-melt and seasonal run-off Explain in brief.
What is the main difficulty in using the slope-area method of discharge measurement? In a rectangular channel, 15 m wide, depth of flow is 3.5 m and area of cross-section is 52·5 m^2 at one section and 3·1 m and 51·0 m^2 respectively at the other section 250 m apart. The drop in the water surface elevation was found to be 0·11 m. If Manning's coefficient is 0.015, estimate the discharge through the channel.
Define Unit Hydrograph and describe its basic theory. How can you show that the unit hydrograph represents a deterministic model of a watershed?
What is the probability that a 5-year flood will
occur four times in a 10-year period?
not occur at all in a 10-year period?
What are the basic assumptions made in the frequency analysis Explain the characteristics of the data required for such type of analysis.
While designing any hydraulic structure,
what is the need of risk analysis
what should be the return period
List and discuss various techniques available to route the flood waves through open channels and reservoirs.
In an area of 100 hectare, it is observed that water table drops by 5 m. Taking the porosity of the aquifer as 0.3, and the specific retention as 0.1, find the specific yield and change in storage in hectare-metres.
State the design requirements of an engineering hydraulic structure for flood mitigation.
State the relationship between flood forecasting and methods of hydrologic analysis. Outline the procedure to forecast floods.
8. Write short notes on any four of the following:
Drought Indices
Low Flow Analysis
Ground Water Deficit
Acidity
Infiltration Curve
Other Question Papers
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