Water Resources Engineering Objective Questions - Set 04 - ObjectiveBooks

# Practice Test: Question Set - 04

1. If a gauge is installed perpendicular to the slope, its measurement is reduced by multiplying
(A) Sine of the angle of inclination with vertical
(B) Cosine of the angle of inclination with vertical
(C) Tangent of the angle of inclination with vertical
(D) Calibration coefficient of the gauge

2. A river training work is generally required when the river is
(C) Meandering type
(D) Both (A) and (B)

3. From the Survey of India map, the distance of the critical point is 20 km and difference in elevation is 193 m. The over land flow time, is
(A) 2 hours
(B) 3 hours
(C) 2 hours and 30 minutes
(D) 4 hours

4. The maximum average depth due to one day storm over an area of 100 km² is 100 mm. Depth-Area-Duration (DAD) curves indicate the same area of 100 km² the maximum average depth for a 3 hour storm will be
(A) 100 mm
(B) More than 100 mm
(C) Less than 100 mm
(D) None of the above

5. Pick up the correct statement from the following:
(A) Perched aquifer is found in unconfined aquifer
(B) The top surface of the water held in the perched aquifer, is known as perched water table
(C) Perched aquifer is formed in unfined acquirer if an impervious layer exists
(D) All the above

6. The stream which does not have any base flow contribution is called
(A) Perennial stream
(B) Intermittent stream
(C) Ephemeral stream
(D) None of the above

7. Non-recording rain gauges
(A) Collect the rain whose volume is measured by means of graduated cylinders
(B) Collect the rain which is directly measured by means of graduated cylinders in centimetres of water depth
(C) Are generally used in hilly terrain
(D) Are cylindrical in shape

8. To estimate the magnitude of a flood with a return period of T years, Gumbel’s distribution method requires the following data pertaining annual flood series
(i) Mean value
(ii) Standard deviation
(iii) Length of record
(iv) Coefficient of skew
(A) (i) and (ii)
(B) (i), (ii) and (iii)
(C) (i), (ii) and (iv)
(D) (i), (ii), (iii) and (iv)

9. From the pattern of the rainfall shown in the below figure, the total precipitation is
(A) 4 cm
(B) 4.5 cm
(C) 5 cm
(D) 5.5 cm

10. The uplift pressure on a dam can be controlled by
(i) Constructing cut-off under upstream face
(ii) Constructing drainage channels between the dam and its foundation
(iii) By pressure grouting in foundation
(A) Only (i)
(B) Both (i) and (ii)
(C) Both (i) and (iii)
(D) (i), (ii) and (iii)

11. Pick up the correct statement from the following:
(A) The zone below water table, is called zone of saturation
(B) The zone above water table, is called zone of aeration
(C) The water which exists in the zone of saturation, is called ground water
(D) All the above

12. The most suitable material for the central impervious core of a zoned embankment type dam is
(A) Clay
(B) Coarse sand
(C) Silty clay
(D) Clay mixed with fine sand

13. Phytometer method is generally used for the measurement of
(A) Interception
(B) Evaporation
(C) Transpiration
(D) None of these

14. If there are two canals taking off from each flank of a river, then there will be
(A) One divides wall and one under-sluice
(B) One divides wall and two under-sluices
(C) Two divide walls and one under-sluice
(D) Two divide walls and two under-sluices

15. Knowledge of hydrology is necessary for civil engineers for
(A) Designing and construction of irrigation structures
(B) Designing and construction of bridges and culverts
(C) Flood control works
(D) All the above

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