Hydrology and Water Resources Engineering Exam Questions - Set 10 - ObjectiveBooks
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Hydrology and Water Resources Engineering Exam Questions - Set 10

Practice Test: Question Set - 10

1. Seepage through foundation in an earthen dam is controlled by providing
    (A) Rock toe
    (B) Horizontal blanket
    (C) Impervious cut off
    (D) Chimney drain

2. Pick up the correct statement from the following:
    (A) Central portion of a cyclone acts as a chimney through which air gets lifted
    (B) Cyclonic precipitation caused by a warm front is generally continuous
    (C) Greatest amount of orographic precipitation falls in the windward side of the barrier
    (D) All the above

3. Pick up the incorrect statement from the following:
    (A) At two meteorologically homogeneous stations, the average annual precipitation is same
    (B) If the average annual precipitation at two places is same these are meteorologically homogeneous stations
    (C) Neither (a) nor (b)
    (D) Both (a) and (b)

4. A unit hydrograph is a hydrograph of a rain storm of a specified duration resulting from a run-off of
    (A) 15 mm
    (B) 20 mm
    (C) 25 mm
    (D) 30 mm

5. Evaporation losses depend upon
    (A) Area of the water surface and depth of the water
    (B) Nature of precipitation and type of vegetation
    (C) Humidity and wind velocity
    (D) All the above

6. Pick up the correct statement from the following:
    (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

7. Which of the following canal structures is used to remove surplus water from an irrigation channel into a natural drain?
    (A) Canal fall
    (B) Canal outlet
    (C) Canal escape
    (D) Canal regulator

8. Pressure exerted by fully saturated air, is known
    (A) Partial pressure
    (B) Saturation pressure
    (C) Saturation vapour pressure
    (D) Both (b) and (c) of the above

9. Study the following statements.
    (i) Levees are constructed parallel to river flow
    (ii) Spurs are constructed parallel to river flow
    (iii) Levees are constructed transverse to river flow
    (iv) Spurs are constructed transverse to river flow
The correct answer is
    (A) (i) and (ii)
    (B) (i) and (iv)
    (C) (ii) and (iii)
    (D) (iii) and (iv)

10. Precipitation caused due to upward movement of warmer air as compared to surrounding air, is called
    (A) Cyclonic precipitation
    (B) Convective precipitation
    (C) Orographic precipitation
    (D) None of these

11. The runoff is affected by
    (A) Size of the basin
    (B) Shape of the basin
    (C) Elevation of the water shed
    (D) All the above

12. 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
    (A) H = h2 - h1
    (B) H = h1 - h2
    (C) H = h2 + h1
    (D) ½ (h1 + h2)

13. If the demand line drawn from a ridge in a flow mass curve does not intersect the curve again, it indicates that
    (A) Demand cannot be met by inflow
    (B) Reservoir was not full at the beginning
    (C) Both (A) and (B)
    (D) None of the above

14. Ryve's formula for flood estimate in cumecs, is
    (A) Q = CA3/4
    (B) Q = CA2/3
    (C) Q = CA1/2
    (D) Q = CA1/4

15. Coefficient of discharge of an ogee spillway
    (A) Depends on depth of approach and upstream slope
    (B) Depends on downstream apron interference and downstream submergence
    (C) Remains constant
    (D) Both (A) and (B)

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