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Free download in PDF Hydrology Short Questions and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams. These short solved questions or quizzes are provided by Gkseries.
41
With the usual meanings of letters, the equation V = 400 I (D10²/4) is used for determining the velocity of ground water flow in metres per day. It is known as
[A]
Slichter's formula
[B]
Darcy's formula
[C]
Meinzer's formula
[D]
None of the above
Answer: Slichter's formula
42
Symon's rain gauge is
[A]
Non-recording gauge
[B]
Tipping-bucket gauge
[C]
Weighing type gauge
[D]
Float recording gauge
Answer: Non-recording gauge
43
The form factor of a drainage basin is obtained by dividing
[A]
Area of the basin by the axial length
[B]
Average width of the basin by the axial basin
[C]
Area of the basin by the square of the axial length
[D]
Both (b) and (c)
44
The surface Run-off is the quantity of water
[A]
Required to fill surface depressions
[B]
That reaches the stream channels
[C]
Absorbed by soil
[D]
Intercepted by buildings and vegetative cover
Answer: That reaches the stream channels
45
A recording type rain gauge
[A]
Is sometimes called integrating rain gauge or continuous rain gauge
[B]
Records the cumulative rain
[C]
Produces a mass curve of rain fall
[D]
All the above
46
The efficiency of a pump may be taken as
[A]
0.65
[B]
0.60
[C]
0.55
[D]
None of these
47
The infiltration capacity during rain storm, is considerably reduced due to
[A]
Compaction due to rain
[B]
Soil moisture
[C]
Surface detention
[D]
All the above
48
The average mean velocity of a stream having depth h, may be obtained by taking the average of the readings of a current meter at a depth of
[A]
0.1 h and 0.9 h
[B]
0.3 h and 0.7 h
[C]
0.2 h and 0.8 h
[D]
0.4 h and 0.6 h
49
A soil strata may consist of
[A]
Capillary zone
[B]
Soil zone
[C]
Intermediate zone
[D]
All the above
50
A river is said to be of uniform section if in its section
[A]
A rectangular section can be fitted
[B]
A segment of a circle can be fitted
[C]
A parabolic section can be fitted
[D]
All the above
51
Isopiestic lines are the contours
[A]
Drawn to piezometric surface
[B]
Drawn to represent piezometric heads
[C]
Drawn to represent water table
[D]
None of these
Answer: Drawn to piezometric surface
52
If the viscosity of ground water is 1.00, the Slitcher's constant is 400, the effective size of soil particles in aquifer is 0.5 mm and hydraulic gradient is 1 in 80, the velocity of flow is
[A]
1.25 m/day
[B]
1.00 m/day
[C]
0.25 m/day
[D]
0.50 m/day
53
If total run off of a basin of 50 hectares is 0.8 cm, the ordinate of Bernard's distribution graph, may be calculated by the formula (where Q is the discharge in cumecs at the given time)
[A]
y = 250 Q
[B]
y = 200 Q
[C]
y = 50 Q
[D]
y = 100 Q
54
Water is useful for
[A]
Providing steam for running locomotives
[B]
Running hydroelectric turbines
[C]
Floating the boats and ships
[D]
All the above
55
The recurrence interval (R.I.) of 20 cm rain storm at a place is 5 years.
[A]
The place may have 20 cm rain storm within a set of 5 years twice
[B]
The place may have 20 cm rain storm after every five years
[C]
The place will definitely have 20 cm rain storm after every five years
[D]
None of these
Answer: The place may have 20 cm rain storm after every five years
36
The main factor which affects the infiltration capacity, is
[A]
Soil moisture
[B]
Depth of surface detention
[C]
Thickness of saturated layer
[D]
All the above
57
The surface run off is due to
[A]
Rain in the net supply interval
[B]
Initial rain
[C]
Residual rain
[D]
All the above
58
The earthen embankments constructed parallel to the river banks at some suitable distance for flood control, are known as
[A]
Floods walls
[B]
Dikes
[C]
Levees
[D]
Both (b) and (c)
59
Consumptive use of a crop during growth, is the amount of
[A]
Evaporation
[B]
Interception
[C]
Transpiration
[D]
All the above
60
Pick up the correct statement from the following:
[A]
The frequency of rain is the number of times, if falls
[B]
The duration of rain is the time for which it falls with a given intensity
[C]
The intensity of rain is the rate at which it falls
[D]
All the above
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