Civil
Engineering :: Water Resources Engineering
via GIPHY
via GIPHY
1. Water contains
A.one
hydrogen atom and one oxygen atom
B.two
hydrogen atoms and one oxygen atom
C.one
hydrogen atom and two oxygen atoms
D.three
hydrogen atoms and two oxygen atoms
E. two
hydrogen atoms and three oxygen atoms.
2. Unit Hydrograph
theory was enunciated by
A.Merril
Bernard
B.W.W.
Horner
C.Le-Roy
K. Shermen
D.Robert
E. Horten.
3. The theory of
infiltration capacity was given by
A.Merrill
Bernard
B.W.W.
Horner
C.Le-Roy
K. Shermen
D.Robert
E. Horten.
4. Hydrology helps in
A.predicting
maximum flows
B.deciding
the minimum reservoir capacity
C.forecasting
the availability of quantity of water at reservoir site
D.predicting
the effects on the river water level on completion of dams
E.all
the above.
5. Pick up the
correct statement from the following :
A.Rivers,
lakes, oceans and springs get water from the rains
B.Rain
water is obtained by evaporation from rivers, lakes and oceans
C.Water
remains in atmosphere as vapours
D.Hydrologic
cycle is a continuous process of evaporation and precipitation of water in
atmosphere
E.all
the above.
6. Pick up the
correct statement from the following :
A.Rain
which is intercepted by buildings, vegetations and other objects, is generally
known as
rainfall interception
B.The
difference between the total rainfall and intercepted rainfall, is generally
called ground
rainfall
C. When
rainfall exceeds the interception rainfall, water reaches the ground and
infiltration
starts
D.The
maximum rate of absorbing water by the soil in any given condition, is known as
infiltration capacity
E.All the above.
7. The surface
Run-off is the quantity of water
A.absorbed
by soil
B.intercepted
by buildings and vegetative cover
C.required
to fill surface depressions
D.that
reaches the stream channels
E. that
gets evaporated.
8. Pick up the
correct equation from the following :
A.Run
off = Surface run off + Ground water flow
B.Run
off = Surface run off - Ground water flow
C.Run
off = Surface run off / Ground water flow
D.Run
off = Surface run off x Ground water flow.
9. Infiltration
capacity of soil depends upon
A.number
of voids present in the soil
B.shape
and size of soil particles
C.arrangement
of soil particles
D.compaction
of the soil particles
E.all
the above.
10. Pick up the
correct statement from the following :
A.
When rainfall rate
exceeds the infiltration capacity, the water enters the soil at full capacity
rate
B.
When rainfall rate is
less than the infiltration capacity, the infiltration rate is approximately
equal to the rainfall
rate
C.The
actual infiltration rate at any time may be equal to or less than the
infiltration capacity
D.
The actual prevailing
rate of infiltration of water in the soil at any time, is known as
infiltration rate
E.All
the above.
11. Pick up the
correct statement from the following :
A.The
portion of pellicular water which remains unutilised, is called hygroscopic
water
B.
The moisture content
at which permanent wilting of plants takes place, is called the
wilting point
C.
The path of the water
required to bring the soil moisture content of a soil up to its field
capacity is called
soil moisture deficiency
D.The
moisture deficiency will be different at different points
E.All
the above.
12. The main factor
which affects the infiltration capacity, is
A.thickness
of saturated layer
B.depth
of surface detention
C.soil
moisture
D.all the above.
13. According to
Robert E. Horton, the equation of infiltration capacity curve, is (where
letters carry their
usual meanings)
A.f = fc
(fo - fc) ekt
B.f = ft
- (fo - fc) e-kt
C.f = ft
+ (fo - fc) e-kt
D.f = f
+ (fo - fc) ekt
14. Pick up the
correct statement from the following :
A. Absolute
humidity at a given temperature is equal to weight of moisture present in a
unit volume
B.Relative
humidity is the ratio of actual vapour pressure and saturation vapour pressure
at the same
temperature
C. Relative
humidity is the ratio of the weight of the vapours present per unit volume to
the weight of vapours
which could be contained at the same temperature when fully
saturated
D.Humidity
can be measured by psychrometer
E.All
the above.
15. Absolute humidity
in air
A.decreases
at higher altitudes
B.increases
at higher altitudes
C.remains
constant at all altitudes
D.none
of these.
16. Precipitation
caused by lifting of an air mass due to the pressure difference, is called
A.cyclonic
precipitation
B.convective
precipitation
C.orographic
precipitation
D.none
of these.
17. The standard
height of a standard rain gauge, is
A.10
cm
B.20
cm
C.30
cm
D.50
cm.
18. In India, rain
fall is generally recorded at
A.8
A.M.
B.12
Noon
C.4
P.M.
D.8
P.M.
19. A recording type
rain gauge
A.produces
a mass curve of rain fall
B.records
the cumulative rain
C.is
sometimes called integrating rain gauge or continuous rain gauge
D.all
the above.
20. In India the
recording type rain gauge generally used, is
A.weighing
type
B.tipping
type
C.float
recording type
D.none
of these.
21. The deficiency in
rain catch due to vertical acceleration of air forced upward over the gauge,
is
A.greater
for heavy rain
B.greater
for lighter rain
C.greater
for large drops
D.lesser
for small rain drops.
22. 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.
23. For determination
of average annual precipitation in a catchment basin, the best method is
A.Arithmetical
method
B.Thiessen's
mean method
C.Isohyetal
method
D.None
of these.
24. While calculating
the average depth of annual precipitation in a catchment basin, importance
to individual
raingauge station is given in
A.Arithmetical
method
B.Thiessen's
mean method
C.Isohyetal
method
D.both
(a) and (b)
E.both (b) and (c).
25. The critical
depth in a channel can be produced
A. by
raising the bottom of the channel
B. by
lowering the bottom of the channel
C. by
decreasing the width of the channel
D. by
increasing the width of the channel
E. both
(a) and (c) of above.
26. A hydraulic jump
in a control meter will be formed above the control, if its original
A.depth
is more than critical depth
B.depth
is less than the critical depth
C.depth
is equal to critical depth
D.none
of these.
27. Prof. Running
suggested the method for extending the discharge curve. It is known as
A.Logarithmic
method
B.y method
C.General
method
D.None
of these.
28. If y is
the depth of water at any section, then the mean velocity is
A.0.1 y
B.0.2 y
C.0.3 y
D.0.5 y
E.0.6 y.
29. The run off is
affected by
A.type
of precipitation
B.rain
intensity and duration of rainfall
C.rain
distribution and soil moisture deficiency
D.direction
of prevailing storm
E.all
the above.
30. The initial basin
recharge is equal to
A.interception
B.depression
storage
C.rain
absorbed by the moisture deficiency
D.all
the above.
31. The run off a
drainage basin is
A.Initial
recharge + ground water accretion + precipitation
B.Precipitation
+ ground water accretion + initial recharge
C.Precipitation
- ground water accretion + initial recharge
D.Precipitation
- ground water accretion - initial recharge.
32. For computing the
run off volumes of large areas, number of infiltrations used are
A.2 B.3
C.4 D.5
33. 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.3
hours and 30 minutes
E.4
hours.
34. If the area of
storm hydrograph is equal to 102 cm, the ordinates of a unit hydrograph may be
obtained by dividing
the ordinates of the storm hydrograph by
A.0.5 B.1
C.2 D.3
E.4
36. If the potential
infiltration of a water shed having a soil with fair pasture cover, is 10 cm
and
rainfall is 12 cm,
the direct run off is :
A.2 cm
B.3 cm
C.5 cm
D.8 cm.
36. If the potential
infiltration of a water shed having a soil with fair pasture cover, is 10 cm
and
rainfall is 12 cm,
the direct run off is :
A.2 cm
B.3 cm
C.5 cm
D.8 cm.
38. Pick up the
incorrect statement from the following :
A.
The rate of flow of
water through a unit cross-sectional area under a unit hydraulic
gradient, is called
coefficient of permeability
B.
The rate of flow of
water through a vertical strip of the acquifer of unit width and full
depth under a unit
hydraulic gradient, is called coefficient of transmissibility
C.The
flow of water through acquifers, is governed by the Darcy's law
D.The
term 'transmissibility' was introduced by Meinzer
E. The
ratio of coefficient of transmissibility and coefficient of permeability, is
equal to the
depth of acquifer
through which water flows.
39.With the usual
meanings ofletters, the equation is used for determining the
velocity of ground water
flow in metres per day. It is known as
A.Meinzer's
formula
B.Slichter's
formula
C.Darcy's
formula
D.Hazen's
formula.
40. If the viscosity
of ground water is 1.00, the Slitcher's constant is 400, the effective size of
soil
particles in acquifer
is 0.5 mm and hydraulic gradient is 1 in 80, the velocity of flow is
A.0.25
m/day
B.0.50
m/day
C.0.75
m/day
D.1.00
m/day
E.1.25
m/day.
41. 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 accquifer if an impervious layer exists
D.All
the above.
42. In the derivation
of Thiem's formula , the following assumption is not
applicable
A.The
aquifer is homogeneous and isotropic
B.Flow
lines are radial and horizontal
C.The
slope of the water surface is too small
D.The
well has been sunk up to the surface of the unconfined aquifer
E.None
of these.
43. A well penetrates
to 30 m below the static water table. After 24 hours of pumping at 31.40
litres/minute, the
water level in a test well at a distance of 80 m is lowered by 0.5 m and in a
well 20 m away water
is lowered by 1.0 m. The transmissibility of the auifer, is
A.1.185
m2/minute
B.1.285
m2/minute
C.1.385
m2/minute
D.1.485
m2/minute
E. 1.585
m2/minute.
44. Shrouding is
provided in
A.cavity
type tube wells
B.slotted
type tube wells
C.strainer
type tube wells
D.perforated
type tube wells.
45. The efficiency of
a pump may be taken as
A.0.55
B.0.60
C.0.65
D.0.70
46. Consumptive use
of a crop during growth, is the amount of
A.interception
B.transpiration
C.evaporation
D.all
the above.
47. For calculating
the evaporation rate over a reservoir surface E = 0.771 (1.465 - 0.00732
B)
(0.44 - 0.007375 V)
(pe - pa), the equation is given by
A.Roohwer's,
formula in M.K.S.
B.Roohwer's
formula in F.P.S.
C.Dalton's
formula in F.P.S.
D.Dalton's
formula in M.K.S.
48. For the estimate
of high floods in fan-shaped catchment, the formula used is
A.Dicken's
formula
B.Ryve's
formula
C.Inglis
formula
D.none
of these.
49. Burge formula
cumecs is based upon
A.rainfall
and drainage area
B.run
off and drainage area
C.drainage
area and its shape
D.drainage
area.
1. In nature water
may occur as
A.liquid
B.solid
C.vapours
D.all
the above.
2. Hydrology is the
science which deals with
A.rain
water
B.river
water
C.sea
water
D.surface
and underground water
E. flood
water.
3. The surface run
off is due to
A.initial
rain
B.residual
rain
C.rain
in the net supply interval
D.all
the above.
4. Hydrograph is a
graphical representation of
A.surface
run off
B.ground
water flow
C.rain
fall
D.discharge
flowing in the river
E.none
of these.
5. The infiltration
capacity during rain storm, is considerably reduced due to
A.surface
detention
B.soil
moisture
C.compaction
due to rain
D.washing
of fine particles
E.all
the above.
6. Rain simulators
are used for the determination of
A.evaporation
B.precipitation
C.run
off
D.infiltration
capacity
E.none
of these.
7.
Precipitation includes
A.rain
B.snow
C.hail
D.all
of these.
8. 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. Convective
precipitation generally occurs in the form of showers of high intensity in
short
duration
D.Greatest
amount of orographic precipitation falls in the windward side of the barrier
E.All
the above.
9. 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.
10. Indian
Meteorological department uses the standard gauges whose collectors have apertures
of
A.50
or 100 sq. cm area
B.100
or 150 sq. cm area
C.100
or 200 sq. cm area
D.250
or 500 sq. cm area.
11. The polythene
bottles are used for collecting rain water and. their capacities is
A.2
litres
B.4
litres
C.10
litres
D.all
the above.
12. Symon's rain
gauge is
A.tipping-bucket
gauge
B.weighing
type gauge
C.float
recording gauge
D.non-recording
gauge.
13. The rainfall
cycle period in India is taken as
A.15
years
B.20
years
C.25
years
D.30
years
E.35
years.
14. Pick up the
correct statement from the following :
A.
B. Normal
annual rainfall is obtained by taking the mean of the annual rainfall over a
period
of 35 years
C.Index
of wetness gives an idea of the wetness of the year
D. If
the rainfall in a year is approximately equal to the annual average value, the
particular
year is said to be an
average year
E.All
the above.
15. Isohytes are the
imaginary lines joining the points of equal
A.pressure
B.height
C.humidity
D.rainfall.
16. The rainfall at
any place is described by
A.its
intensity
B.its
duration
C.its
frequency
D.all
the above.
17. Pick up the
correct statement from the following :
A.The
intensity of rain is the rate at which it falls
B.The
duration of rain is the time for which it falls with a given intensity
C.The
frequency of rain is the number of times, if falls
D.All
the above.
18. 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).
19. Pick up the
correct statement from the following :
A.The
throat of the section of a control meter is either rectangular or trapezoidal
B.The
floor of the control meter throat is almost level
C.The
floor of the expanding outlet of the control meter is given a steep slope
D.A
properly designed control meter is associated with the phenomena of hydraulic
jump
E.All
the above.
20. Discharge curve
may be extended by logarithmic method if
A.cross
section of river is uniform
B.river
is broader and shallower
C.river
is of any type
D.none
of these.
21. The best instrument
for measuring the velocity of a stream flow is
A.pitot
tube
B.Price's
current meter
C.surface
float
D.sub-surface
float.
22. 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.0.2 h
and 0.8 h
C.0.3 h
and 0.7 h
D.0.4 h
and 0.6 h.
23. If the velocities
of flow of a stream of 10 m depth recorded by a current meter at depths of 2
m and 8 m are 0.7 m
and 0.3 m respectively, the discharge per unit width of the stream in
cubic metres, is
A.2 B.3
C.4 D.5
E.6
25. The time required
by rain water to reach the outlet of drainage basin, is generally called
A.time
of concentration
B.time
of overland flow
C.concentration
time of overland flow
D.duration
of the rainfall
E.none
of these.
26. Time of overland
flow, is affected by
A.slope
of the basin
B.type
of the ground surface
C.length
of the flow path
D.all the above.
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