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Water Resources Engineering problems

1. Pick up the correct statement from the following :
Options
A. Run off and surface run off are the same
B. Run off includes the water flowing over the surface
C. Run off is sometimes called discharge of the river
D. Surface run off is sometimes called stream flow.

2. The coefficients of permeability of soils of an unconfined aquifer and another confined aquifer were determined by pumping water from the wells and observing the effect of water table in two test wells at equal distances was found to be equal. The total height of confined aquifer H is given by
Options
A. H = h₂ - h₁
B. H = h₁ - h₂
C. H = h₂ + h₁
D. (h₁ + h₂)

3. Precipitation caused due to striking of air masses with a topographical feature, is called
Options
A. orographic precipitation
B. convective precipitation
C. cyclonic precipitation
D. none of these.

5. The area enclosed by the adjacent isohyets of a catchment basin are shown under :

The average depth of annual precipitation in the catchment basin will be
Options
A. 60.0 cm
B. 60.5 cm
C. 61.5 cm
D. 62.5 cm
E. 63.5 cm.

7. For efficient working of a control meter, its throat length is approximately kept
Options
A. equal to the critical depth
B. twice the critical depth
C. three times the critical depth
D. four times the critical depth.

8. Relative humidity is the ratio of actual vapour pressure to the saturation vapour pressure
Options
A. at the same temperature
B. at the same pressure
C. in the same volume
D. in the atmosphere.

9. The rate of evaporation from reservoirs may be determined by
Options
A. pan-measurement method
B. empirical formulae
C. storage equation method
D. energy budget method
E. all the above.

10. Pick up the correct statement from the following :
Options
A. If ground water enters the channel, the channel is known as effulent channel
B. If water goes out of channel to meet ground water, the channel is said to be influent stream
C. If the water table is at higher level than the water level in channel, ground water flows to the stream
D. If the water level in stream is higher than the water table level, water from the channel enters into ground water
E. All the above.

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