Q.1
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.2
The flow of water after spilling over the weir crest in chute spillway and side channel spillway respectively are
  • At right angle and parallel to weir crest
  • Parallel and at right angle to weir crest
  • Parallel to weir crest in both
  • At right angle to weir crest in both
Q.3
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.4
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.5
The state of the soil when plants fail to extract sufficient water for their requirements, is
  • Maximum saturated point
  • Permanent wilting point
  • Ultimate utilization point
  • None of these
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
As compared to gravity dams, earthen dams
  • are costlier
  • are less susceptible to failure
  • require sound rock foundations
  • require less skilled labour
Q.8
The ratio of rate of change of the discharge of an outlet to the rate of change of the discharge of distributing channel is called
  • proportionality
  • flexibility
  • setting
  • sensitivity
Q.9
Pick up the incorrect statement from the following. Culturable commanded area is the gross area of an irrigation canal system less
  • Populated area
  • Alkaline area
  • Forest area
  • Fallow land
Q.10
If Δ is the depth of water in metres, B is the number of days of base period and D is the duty in hectare/cumec, the relationship which holds good, is
  • D = Δ (8.64 D/B)
  • B = Δ (8.64 B/D)
  • D = (8.6 Δ/B)
  • Δ = (8.6 B/D)
Q.11
Which of the following types of rain gauges is used for measuring rain in remote hilly inaccessible areas ?
  • tipping bucket type
  • weighing type
  • floating type
  • Simon’s raingauge
Q.12
In gravity canals, F.S.L. is
  • Always at the ground level
  • Always below the ground level
  • Generally 4 to 5 meters above the ground level
  • Only a few cm above the ground level
Q.13
Which of the following can be used as a meter fall ?
  • vertical drop fall
  • flumed glacis fall
  • unflumed glacis fall
  • all of the above
Q.14
The value of Sodium Absorption Ratio for high sodium water lies between
  • 0 to 10
  • 10 to 18
  • 18 to 26
  • 26 to 34
Q.15
If D is the depth of water upstream of the throat above its sill, B is the width of the throat, to achieve critical flow in an open venturi flume, the theoretical maximum flow Q, is
  • Q = 1.71 BD1/2
  • Q = 1.71 BD
  • Q = 1.71 BD3/2
  • Q = 1/71 BD2/3
Q.16
If d is the depth of the aquifer through which water is flowing, then the relationship between permeability k and transmissible T is given by
  • T = kd
  • T = k/d
  • T= Vkd
  • k= VTd
Q.17
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.18
A fall in a canal bed is generally provided, if
  • Ground slope exceeds the designed bed slope
  • Designed bed slope exceeds the ground slope
  • Ground slope is practically the same as the designed bed slope
  • None of these
Q.19
The ratio of the discharge over a trapezoidal crest to a rectangular crest of Sarda falls of identical parameters, is
  • 1.084
  • 1.074
  • 1.064
  • 1.054
Q.20
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.21
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.22
The sensitivity of a rigid module is
  • zero
  • between zero and one
  • 1
  • infinity
Q.23
The width of a dowla is generally kept betweentocm and its height above the road level should invariably be more than
  • 10 cm
  • 20 cm
  • 30 cm
  • 40 cm
Q.24
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.25
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.26
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.27
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.28
Wetted perimeter of a regime channel for a discharge ofcumecs as per Lacey’s theory will be
  • 19m
  • 38m
  • 57m
  • 76m
Q.29
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.30
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
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