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
- (A) Aggrading
type
- (B) Degrading
type
- (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
The correct
answer is
- (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
The correct
answer is
- (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