Hydrology and Ground Water

1. A 6 hours storm had 4 cm of rainfall and the resulting runoff was 2 cm. If <j) index remains at the same value, the runoff due to 10 cm rainfall in 12 hours in the catchment is

1. 4.5 cm
2. 6.0 cm
3. 7.5 cm
4. 9.0 cm

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2. A control meter is preferred to a weir because

1. It measures the discharge even in silt Leiden streams
2. The velocity of approach of the channel increases above the control, and thus removes the silt completely
3. It is not damaged by floating debris
4. All the above

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3. A divide wall is provided

1. At right angle to the axis of weir
2. Parallel to the axis of weir and upstream of it
3. Parallel to the axis of weir and downstream of it
4. At an inclination to the axis of weir

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4. A hydraulic jump in a control meter will be formed above the control, if its original

1. Depth is more than critical depth
2. Depth is less than the critical depth
3. Depth is equal to critical depth
4. None of these

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5. A hydroelectric scheme operating under a head of 80 m will be classified as

1. Low head scheme
2. Medium head scheme
3. High head scheme
4. None of the above

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6. A hyetograph is a graphical representation of

1. Rainfall intensity and time
2. Rainfall depth and time
3. Discharge and time
4. Cumulative rainfall and time

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7. A land is known as waterlogged

1. When the permanent wilting point is reached
2. When gravity drainage has ceased
3. Capillary fringe reaches the root zone of plants
4. None of the above

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8. A recording type rain gauge

1. Produces a mass curve of rain fall
2. Records the cumulative rain
3. Is sometimes called integrating rain gauge or continuous rain gauge
4. All the above

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9. A repelling groyne is aligned

1. Pointing upstream
2. Pointing downstream
3. Perpendicular to bank
4. Parallel to bank

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10. A river bend characterized by silting

1. Scouring on concave side
2. Silting on convex side
3. Scouring on convex side and on concave side
4. Scouring on concave side and silting on convex side

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