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Quiz 2
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Q.1
The length of a meander is the distance along the river between the tangent point of one curve to the tangent point of
Reverse curve
Next curve of the same order
Reverse curve plus the width of the river
None of these
Q.2
A 6 hours storm had 4 cm of rainfall and the resulting runoff was 2 cm. If ϕ index remains at the same value, the runoff due to 10 cm of rainfall in 12 hours in the catchment is
4.5 cm
6.0 cm
7.5 cm
9.0 cm
Q.3
Wetted perimeter of a regime channel for a discharge of 64 cumecs as per Lacey’s theory will be
19m
38m
57m
76m
Q.4
A counter berm is
A horizontal benching provided on the inside slope
A horizontal benching provided on the outside slope
A vertical benching provided on the outer edge of the bank
A vertical benching provided on the inner edge of the bank
Q.5
The ratio of the average load to the installed capacity of the plant whose reserve capacity is zero will be equal to
Load factor
Plant factor
Utilization factor
Both (A) and (B)
Q.6
The useful moisture of soil, is equal to its
Field capacity
Saturation capacity
Moisture content at permanent wilting point
Difference between filed capacity and permanent wilting point within the root zone of plants
Q.7
Borrow pits should preferably be located in
Field on the left side of the canal
Field on the right side of the canal
Fields on both sides of the canal
Central half width of the section of the canal
Q.8
As compared to gravity dams, earthen dams
are costlier
are less susceptible to failure
require sound rock foundations
require less skilled labour
Q.9
Bed bars in a canal are provided
To watch the general behavior of canal
To measure the discharge
To raise the supply level
To control the silting
Q.10
The depth of water required to bring the soil moisture content of a given soil upto its field capacity is called
hygroscopic water
equivalent moisture
soil moisture deficiency
pellicular water
Q.11
A multipurpose reservoir is the one which is
designed for one purpose but serves more than one purpose
planned and constructed to serve various purposes
both (A) and (B)
none of the above
Q.12
A divide wall is provided
At right angle to the axis of weir
Parallel to the axis of weir and upstream of it
Parallel to the axis of weir and downstream of it
At an inclination to the axis of weir
Q.13
The consumptive use of water for a crop
Is measured as the volume of water per unit area
Is measured as depth of water on irrigated area
May be supplied partly by precipitation and partly by irrigation
All the above
Q.14
The uplift pressure on the face of a drainage gallery in a dam is taken as
hydrostatic pressure at toe
average of hydrostatic pressure at toe and heel
two-third of hydrostatic pressure at toe plus one-third of hydrostatic pressure at heel
none of the above
Q.15
A deep well
is always deeper than a shallow well
has more discharge than a shallow well
is weaker structurally than a shallow well
both (A) and (B)
Q.16
The most suitable section of a lined canal, is
Triangular section with circular bottom for small canals
Trapezoidal section with rounded corners for large canals
Both (A) and (B)
None of these
Q.17
The uplift pressure on the roof of an inverted syphon, is maximum when
Drain in running dry
Canal is running dry
Canal is running with F.S.L.
Drain is running with H.F.L.
Q.18
The water face of the guide banks, is protected by
One men stone pitching
Two man stone pitching
Three man stone pitching
Four man stone pitching
Q.19
The length and width of a meander and also the width of the river, vary roughly as
Square root of the discharge
Discharge
Square of the discharge
Cube of the discharge
Q.20
Which of the following canal structures is used to remove surplus water from an irrigation channel into a natural drain ?
canal fall
canal outlet
canal escape
canal regulator
Q.21
The sensitivity of a rigid module is
zero
between zero and one
1
infinity
Q.22
The scour depth D of a river during flood, may be calculated from the Lacey's equation
D = 0.47 (Q/f)
D = 0.47 (Q/f)
1/2
D = 0.47 (Q/f)
1/3
D = 0.47 (Q/f)
2/3
Q.23
Unit of runoff in M.K.S. system is
cubic metre/sec
metre/sec
cubic metre
square metre
Q.24
In a syphon aqueduct
Drainage passes over the canal and F.S.L. of the canal is below the bottom of the drainage trough
Drainage passes over the canal and F.S.L. of the canal is above the bottom of the drainage trough
Canal passes over the drainage and H.F.L. of the drainage is above the bottom of the canal trough
Canal passes over the drainage and H.F.L. of the drainage is below the bottom of the canal trough
Q.25
For an annual flood series arranged in descending order of magnitude, the return for a magnitude listed at position period m in a total data N is
N/(m+l)
m/(N+l)
m/N
(N+l)/m
Q.26
A 70% index of wetness means
rain excess of 30%
rain deficiency of 30%
rain deficiency of 70%
none of the above
Q.27
Useful soil moisture for plant growth, is
Capillary water
Gravity water
Hygroscopic water
Chemical water
Q.28
Trap efficiency of a reservoir is a function of
capacity/inflow ratio
capacity/outflow ratio
outflow/inflow ratio
none of the above
Q.29
Seepage through embankments in an earthen dam is controlled by
drainage filters
relief wells
drain trenches
provision of downstream berms
Q.30
Under the same conditions, which of the following shapes of water surface will give the highest rate of evaporation ?
flat water surface
convex water surface
concave water surface
independent of shape of water surface
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