1. Method of pricing irrigation water is

flat rate pricing

volumetric method of pricing

both and

None of the above

2. River training works may be classified as

training for discharge

training for depth

training for sediment

All of the above

3. Ram Ganga project is situated in

Uttar Pradesh

Uttarakhand

Haryana

Himachal Pradesh

4. An ideal fluid is defined as the fluid which is

incompressible and non-viscous

compressible

incompressible

compressible and viscous

5. Pascal's law states that pressure at a point is equal in all directions, in a

static solid

static fluid

static gas

moving fluid

6. Notch is used in any tank or channel for measurement of

velocity

pressure

discharge

energy

7. Reynold's number is defined as the ratio of

inertia force to gravity force

viscous force to gravity force

viscous force to elastic force

inertia force to viscous force

8. The soil becomes practically infertile when its pH value is about

0

7

11

None of the above

9. Evaporation is measured by using

an open pan

lysimeter

infiltrometer

a neutron tube

10. The plot between rainfall intensity and time is called

mass curve

hyetograph

isohyetal line

hydrograph

11. The optimum depth of Kor watering for rice crop is

13cm

16cm

19cm

22cm

12. An outlet is said to be proportional, if its flexibility is

equal to unity

less than unity

slightly greater than unity

equal to two

13. The ratio of actual discharge of a jet of water to its theoretical discharge is known as

coefficient of discharge

coefficient of velocity

coefficient of contraction

coefficient of viscosity

14. If the density of a fluid changes from point to point in a flow region, it is called

steady flow

unsteady flow

non-uniform flow

compressible flow

15. The inlet length of a venturimeter is

equal to the outlet length

more than the outlet length

less than the outlet length

None of the above

16. Manometer is used for measuring

velocity at a point in a fluid

pressure at a point in a fluid

difference of pressure between two points

both and

17. When the pipes are connected in series, the total rate of flow is

equal to the sum of the rate of flow in each pipe

equal to the reciprocal of the sum of the rate of flow in each pipe

the same as flowing through each pipe

None of the above

18. The range for coefficient of discharge for a venturimeter is

0.6 to 0.7

0.7 to 0.8

0.8 to 0.9

0.95 to 0.99

19. Pitot tube is used for the measurement of

pressure at a point

velocity at a point

discharge at a point

None of the above

20. Flow in a pipe is laminar, if

Reynold's number is equal to 2000

Reynold's number is equal to 4000

Reynold's number is more than 4000

Reynold's number is less than 2000

21. The necessary condition for the flow to be steady is that

the velocity does not change from place to place

the velocity is constant at a point with respect to time

the velocity changes at a point with respect to time

None of the above

22. Increase of temperature

increases the viscosity of liquid

decreases the viscosity of liquid

decreases the viscosity of gas

None of the above

23. The head loss due to sudden expansion is given by (with usual notations)

<img src='./qimages/3399-23.jpg'>

24. Which of the following is not a cash crop

Jute

Tea

Rice

Sugarcane

25. The minimum freeboard recommended for lined canal carrying discharge greater than 10 is

0.15 m

0.60 m

1.25 m

0.75 m

26. For crops like potato and sugar-beats, the commonly adopted method of surface irrigation is

check flooding

free flooding

basin flooding

furrow irrigation

27. Fish ladder is provided on the side of

divide wall

diaphragm wall

core wall

wing wall

28. The interval of supply of irrigation water depends on

crop only

soil and crop

crop and climate

soil, crop and climate

29. A core wall is provided in a/an

gravity dam

earthen dam

canal regulator

aqueduct

30. Water logging is eliminated by

deep ploughing

shallow ploughing

providing drains

irrigation

31. The most economical central angle of an arch dam is

93°

123°

133°

183°

32. Lacey's regime theory was developed after extensive research in

India

Israel

Indonesia

Iraq

33. Seepage losses in a canal are more when it is

completely in cutting

completely in filling

lined

partly in filling and partly in cutting

34. Bhakra dam is a/an

non-rigid gravity dam

buttress dam

gravity dam

arch dam

35. Lysimeter is used for measuring

infiltration

evaporation

vapour pressure

evapo-transpiration

36. Reynold's number for groundwater flow varies from

below 1

1 to 10

10to15

15to20

37. The removal of air by filling the pump with water is called

priming

de-aerating

sterilizing

None of the above

38. When two centrifugal pumps are operated in series, the discharge

increases

decreases

remains constant

initially increases, then decreases

39. The expression Q KIA (with usual notations) represents

Rational formula

Darcy's law

Manning's formula

Lacey's equation

40. Lacey's theory is applicable to flow

through pipes

in concrete lined channels

over spillways

in alluvial rivers and canals

41. Which of the following has maximum water application efficiency

Surface irrigation

Lift irrigation

Sprinkler irrigation

Furrow irrigation

42. Hydraulic radius R is defined (with usual notations) as

A/P

P/A

A/n

None of these

43. The outlet discharge factor is the duty at the head of

main canal

branch canal

distributary

water course

44. In North Indian plains, the optimum depth of Kor watering for wheat is

13.5 cm

15.5 cm

19.0 cm

20.5 cm

45. The moisture content of the soil, after free drainage has removed most of the gravity water, is called

available moisture

saturation capacity

field capacity

gravity water

46. Outlet discharge, for a particular crop, is given by

outlet factor/area

area/outlet factor

area × outlet factor

None of the above

47. The water utilizable by plants is available in soils in the form of

gravity water

chemical water

hygroscopic water

capillary water

48. Kennedy, in his silt theory, assumed that the silt is kept in suspension due to eddies generated from

bed only

sides only

whole perimeter

All of the above

49. The relation given by Kennedy for critical velocity V(in is o

V0 0.84 m D0.84

V0 0.84 m D0.74

V0 0.55 m D0.64

V0 0.64 m D0.55

Where m critical velocity ratio
D depth of water in m

50. Lacey's perimeter discharge relation is given as

P 2.25 Q1/2

P 4.75 Q1/2

P 2.25 Q3/2

P 4.75 Q3/2

51. The maximum permissible eccentricity, for no tension at the base of the gravity dam, is

B/3

B/4

B/5

B/6 Where B base width of the dam

52. The major resisting force for a gravity dam is

water pressure

wave pressure

self weight of the dam

uplift pressure

53. If the R.L. of canal bed level and high flood level of drainage are 212.0 m and 210 m respectively, then the cross-drainage work will be

aqueduct

syphon

syphon aqueduct

super passage

54. The discharge per unit drawdown of a well, is called

specific storage

specific yield

specific capacity

None of the above

55. The wetted perimeter of a regime channel for a discharge of 64 as per Lacey's theory, will be

19m

38m

57m

76m

56. The water pressure per metre length on a vertical masonry wall of a dam will be

w H/2

wH

wH2/4

wH2/2

Where w specific weight of water
H height of the wall

57. When a body is immersed wholly or partially in a liquid, it is lifted up by a force equal to the weight of the liquid displaced by the body. This statement is called

Pascal's law

Archimedes's principle

Bernoulli's theorem

None of the above

58. When the liquid is flowing through a pipe, the velocity of the flowing liquid is

maximum at the centre and minimum near the walls

minimum at the centre and maximum near the walls

zero at the centre and maximum near the walls

None of the above

59. A flow, in which each liquid particle has a definite path and the paths of individual particles do not cross each other, is called

steady flow

turbulent flow

streamline flow

None of the above

60. A flow in which quantity of liquid flowing per second is not constant

streamline flow

turbulent flow

steady flow

None of the above

61. A flow through a long pipe, at a constant rate, is called

steady uniform flow

steady non-uniform flow

unsteady uniform flow

unsteady non-uniform flow

62. The pressure of a liquid measured with the help of a piezometer tube is

atmospheric pressure

gauge pressure

absolute pressure

vacuum pressure

63. The best channel cross-section is the one which has

minimum roughness coefficient

least count

maximum area for a given flow

minimum wetted perimeter

64. The discharge over a rectangular notch is

inversely proportional to H2/3

directly proportional to H3/2

inversely proportional to H2/5

directly proportional to H5/2

Where H height of liquid above the sill of the notch.

65. A weir is said to be narrow-crested, if the width of the crest of the weir is

equal to H

more than H

less than H

None of the above Where H height of water above weir crest

66. In a centrifugal pump, the liquid enters the pump

at the centre

at the bottom

at the top

from sides

67. The pump, suitable for small discharge and high head, is

centrifugal pump

axial flow pump

mixed flow pump

reciprocating pump

68. The theoretical power (in h.p.) required to drive a reciprocating pump is

<img src='./qimages/3399-68.jpg'>

Where w specific weight of liquid to be pumped
Q discharge of the pump in m3/s
Hs suction head in m
Hd delivery head in m

69. The hydraulic efficiency of an impulse turbine is maximum, when the ratio of the velocity at wheel to jet velocity is

1

3/4

1/2

1/4

70. An impulse turbine is used for

low head of water

high head of water

medium head of water

high discharge of water

71. In a reaction turbine, the draft tube is used

to run the turbine full

to prevent air to enter the turbine

to increase the head of water by an amount equal to the height of the runner outlet above the tail race

None of the above

72. In a Francis turbine runner, the number of blades are generally between

2to4

4to8

8to16

16to24

73. In a Kaplan turbine runner, the number of blades are generally between

2to4

4to8

8to16

16to24

74. An irrigation project is classified as a major project, when the culturable command area involved in the project is more than

2000 hectares

5000 hectares

10,000 hectares

None of the above

75. Flood waters of rivers are sometimes diverted through canals, called

feeder canals

inundation canals

perennial canals

carrier canals

76. According to Reyve's formula for estimating floods, the peak discharge is proportional to

A

A2/3

A3/4

A1/2
Where A Area of the catchment basin.

77. When the crest length of the weir equals the width of the channel, on which water flows, the number of end contractions in Francis formula will be

1

2

4

zero

78. The velocity of drainage water in the barrels of syphon aqueduct is normally limited to

1 to 2m/sec

2 to 3m/sec

3 to 4m/sec

4 to 5m/sec

79. The best method for measuring the velocity of flow in rivers is

Pitot tube method

Surface float method

Velocity rod method

Current meter method

80. The lower limit of factor of safety against overturning in a gravity dam is

2.0

1.75

1.50

1.25

81. Yield of a slotted tube well as compared to yield of strainer tube well is

low

more

equal

None of the above

82. Which of the following is a bank protection measure

Brick pitching

Stone rip-rap

Concrete slab lining

All of the above

83. The average particle size of the silt in mm is then Lacey's silt factor is proportional to ½

d2

d1½

d1/2

d1/3

84. The coefficient of roughness for an earthen canal, in excellent condition, is taken as

0.01

0.0225

0.025

0.7

85. Shrouding is provided in

cavity type tubewell

slotted type tubewell

strainer type tubewell

None of the above

86. The critical depth in a channel can be produced by

decreasing the width of the channel

increasing the width of the channel

increasing the side slope of the channel

decreasing the side slope of the channel

87. The nodal agency for flood forecasting in India, is

Ministry of Home Affairs

Ministry of Agriculture

Ministry of Earth Sciences

Central Water Commission

88. Alkaline soils are reclaimed by

leaching only

addition of gypsum and leaching

addition of gypsum only

provision of drainage

89. Dicken's formula for high flood discharge is used for the catchments in

Eastern India

Western India

Northern India

Southern India

90. Thickness of concrete lining for a canal is governed by

requirement of imperviousness

requirement of imperviousness and structural strength

thumb rule for providing nominal thickness

canal bank slope

91. 8 m3/s discharge flows through 4 m wide rectangular channel at a velocity of 2 m/s. The hydraulic mean radius of the channel is

3/2m

2/3m

1m

4m

92. A triangular channel is hydraulically most economical when each of its sloping sides is inclined to the vertical at an angle of

30°

60°

45°

75°

93. As per Lacey's theory, the wetted perimeter of a regime-channel for a discharge of 100 is

87.5 m

67.5 m

47.5 m

42.5 m

94. The ratio of irrigated area under Rabi and Kharif crops is called

Overlap ratio

Crop ratio

Kor ratio

Rotation ratio

95. As per recommendations of Indian standards, the shape of lined canal is

trapezoidal

semi-circular

parabolic

elliptical

96. As compared to gravity dams, earthen dams

are costlier

are less susceptible to failure

require sound rock foundation

require less skilled labour

97. The ratio of base width to height of an elementary profile of a gravity dam, from tension' consideration, is given by

<img src='./qimages/3399-97.jpg'>

Where G specific gravity of dam material
K uplift pressure intensity and
µ coefficient of friction

98. Coefficient of velocity for an orifice is given by (with usual notations)

<img src='./qimages/3399-98.jpg'>

99. An artesian aquifer is the one where

water surface under the ground is at atmospheric pressure

water is under pressure between two impervious strata

water table serves as upper surface of zone of saturation

None of the above

100. At a sudden contraction in a horizontal pipe

total energy decreases

velocity head increases

pressure head decreases

All of the above

101. If the duty of water for a crop of base period 120 days is 1400 hect./cumec, then delta (delta) for the crop is

741 mm

843 mm

949 mm

1056 mm

102. The standard Symons' type raingauge has a collecting diameter equal to

5.08 cm

10.0 cm

12.7 cm

25.4 cm

103. Irrigation water having SAR value of 20, is called

very high sodium water

high sodium water

medium sodium water

low sodium water

104. Cross-regulators in main canal are provided to

regulate water supply in the off-taking channel

regulate water supply in the main channel

regulate excessive flood water

head up water for adequate supply into the off-taking channel

105. A pump is a device which converts

hydraulic energy into mechanical energy

mechanical energy into hydraulic energy

kinetic energy into mechanical energy

None of the above

106. A turbine is called reaction turbine, if at the inlet of the turbine the total energy is

kinetic energy only

pressure energy only

kinetic energy and pressure energy

None of the above

107. The discharge through a triangular notch is given by (with usual notations)

<img src='./qimages/3399-107.jpg'>

108. The discharge through a rectangular notch (with usual notations) is given by

2/3 Cd. LH3/2

8/15Cd. LH3/2

2/3Cd. LH5/2

8/15Cd. LH5/2

109. Notch is a device used for measuring

rate of flow through pipes

rate of flow through small channel

velocity of flow through a pipe

velocity of flow through a small channel

110. The discharge through a large rectangular orifice is 2

<img src='./qimages/3399-110.jpg'>

None of the above

Where b Width of the orifice
H1 height of the liquid above top edge of orifice
H2 height of liquid above bottom edge of orifice
Cd coefficient of discharge

111. The discharge through a venturimeter is given as (with usual notations)

<img src='./qimages/3399-111.jpg'>

None of the above

112. The capillary rise or fall of a liquid is given by (with usual notations)

<img src='./qimages/3399-112.jpg'>

113. Hydraulic gradient line represents the sum of

pressure head and kinetic head

kinetic head and datum head

Pressure head, kinetic head and datum head

Pressure head and datum head

114. The bed slope of a canal off-taking from a barrage is kept

steeper than the bed slope of the river

milder than the bed slope of the river

same as that of river

None of the above

115. The intensity of irrigation for Kharif is 45% and that for Rabi is then annual intensity of irrigation is

60%

100%

105

None of the above

116. In lift irrigation, the flow is

by gravity

from lower level to higher level

by percolation

through sprinkler head

117. The maximum irrigation requirement of rice crop is exhibited by its

maximum delta value

maximum duty value

minimum duty value

None of the above

118. The ratio between the area of a crop irrigated and the quantity of water required during its entire period of growth is known as

delta

duty

base period

crop period

119. Available moisture may be defined as

difference in water content of the soil between field capacity and permanent wilting point

moisture content at permanent wilting point

maximum water holding capacity

None of the above

120. The whole period of cultivation, from the time when irrigation water is first supplied for the preparation of ground to its last-watering before harvesting, is called

Kor period

Crop period

Base period

None of the above

121. A channel aligned nearly parallel to the contours of a country, is called

side slope channel

watershed channel

ridge channel

contour channel

122. When the reservoir is full, the maximum compressive force in a gravity dam is produced

at the toe

at the heel

within the middle third of the base

at the centre of the base

123. The correct sequence of the parts of a canal system is

headworks, major distributary, branch canal and minor distributary

headworks, main canal, branch canal, minor distributary and major distributary

headworks, main canal, branch canal, major distributary and minor ditributary

None of the above

124. Evapo-transpiration of water by a crop means water consumed by

evaporation only

conveyance loss and evaporation

transpiration and conveyance loss

transpiration and evaporation

125. Lining of irrigation channels

may stop leakage of water

creates water logging in near-by areas

both and

None of the above

126. Yield of a well depends upon

area of aquifer opening into the well

actual flow velocity

permeability of soil

All of the above

127. In a gravity dam, the shear friction factor against sliding should be

1

2

3to4

morethan5

128. The instrument used for accurately measuring velocity of water is

venturimeter

Pitot tube

Orifice meter

Anemometer

129. Provision of a filter and rock-toe, in an earthen dam, is done to

prevent piping action in the dam section

collect and drain out the seepage water out of dam

reduce the quantity of seepage water

both and p .2

130. Under which of the following conditions will the equation constant be valid in a flow field

1. Flow is rotational.

2. Flow is irrotational.

3. Flow is incompressible.
4. Flow is steady 5. Flow is laminar.

Select the correct answer

1,3and 5

2,4and 5

1,3and 4

2,3and 4

131. Two small circular orifices of diameters d1 and d2 are placed on one side of a tank at depths of 25 cm and 1 m respectively below a constant-surface of water. If the discharges through the orifice are the same, then the ratio of the diameters d 1 and d2 will be

1:2

1:route 2

route 2:1

2:1

132. If coefficient of contraction for a sharp edged orifice is 0.65 and coefficient of velocity of flow is 0.92, then coefficient of discharge will be

0.598

0.706

1.415

1.57

133. A drop in canal bed is generally provided, if

ground slope exceeds designed bed slope.

design bed slope exceeds ground slope.

ground slope is same as the designed bed slope.

None of the above.

134. Khosla's safe exit gradient for design of weir will be lowest for the soil type

coarse sand

fine sand

shingle and gravel

None of the above

135. In a certain irrigation project and in a given year, 72% and 56% of the culturable command area remained unirrigated in Kharif and Rabi season, then the intensity of irrigation for that year and for that project, will be

36%

64%

72%

128%

136. The measures adopted to reclaim water-logged area are

installation of lift irrigation schemes

lining of canals

lowering of full supply level

All of the above

137. A divide wall is provided

at right angles to the axis of the barrage

parallel to the axis of the barrage and upstream

parallel to the axis of the barrage and downstream

None of the above

138. If there are two canals taking off from a river (one from each bank), then there will be

one divide wall and one under sluice bay

one divide wall and two under sluice bays

two divide walls and one under sluice bay

two divide walls and two under sluice bays

139. The volume of rainfall which produces equal run-off is called

point rainfall

effective rainfall

average rainfall

None of the above

140. Irrigation is basically required in

Humid regions

Arid regions

Semi-arid regions

All of the above

141. The geological formation which contains and readily yields water is called

aquifer

aquifuge (not containing water)

aquitard

aquiclude

142. The canal which is not supposed to do any direct irrigation, is called

main canal

watercourse

major distributary

minor distributary

143. The relation between duty D in hectares/cumec, depth of water . in metres and base period B in days is given by


144. A rain-gauge should preferably be fixed

<img src='./qimages/3399-144.jpg'>

in an open space

in a closed space

near the building

under the tree

145. Which of the following is not a recording rain-gauge

Tipping bucket type

Simon's rain-gauge

Floating type

Weighing bucket type

146. Sprinkler irrigation is preferred when

the ground is undulating

the crop has shallow roots

the irrigation water is scarce

All of the above

147. If specific yield of a particular sand is 30% and its porosity is then the specific retention of the sand will be

80%

55%

40%

20%

148. For a well, founded in a confined aquifer, if the draw-down is doubled, the discharge will become

0.5Q

1.5Q

2.0Q

3.0Q

149. The water available in unit volume of an aquifer is called

specific storage

specific retention

specific yield

None of the above

150. In which stage of river flow, its bed is having maximum slope

Mountainous stage

Boulder stage

Trough stage

Delta stage

151. A repelling groyne is aligned

pointing upstream

pointing downstream

perpendicular to bank

parallel to bank

152. The elementary profile of a dam is

a rectangle

a trapezoidal

an equilateral triangle

a right angled triangle

153. Seepage through foundation in an earthen dam is controlled by providing

rock-toe

horizontal blanket

impervious cut-off

chimney drain

154. For the upstream face of an earthen dam, the most adverse condition for stability of slope is

sudden drawdown

steady seepage

during construction

sloughing of slope

155. The major resisting force in a gravity dam is

water pressure

self weight of dam

wave pressure

uplift pressure

156. The ratio of pressures between the points A and B located at depths 0.5 m and 2.0 m respectively below a constant level of water in a tank is

route 2

1:2

1:4

1:16

157. The total pressure on a plane surface submerged in a liquid and inclined at an angle . with the horizontal will be

p.A

p.A. sin theta

p.A. cos theta

p.A.tan theta

Where p is pressure intensity at centroid of area and A is area of plane surface.

158. The relation between Manning's and Chezy's is given by R1/6 R2/3

r1/6/n

r2/3/n

r1/3/n

r1/4/n

Where hydraulic mean depth

159. Study the following statements

Levees are constructed parallel to the river flow.
Spurs are constructed parallel to the river flow.
Levees are constructed transverse to the river flow.
Spurs are constructed transverse to the river flow.

The correct answer is

and

and

and

and

160. Equation of continuity is based on the principle of conservation of

mass

energy

momentum

none of the above

161. The losses are more in

laminar flow

transition flow

turbulent flow

critical flow

162. Due to each end contraction, the discharge of rectangular sharp-crested weir is reduced by



10%

15%

20%

163. For the same mean velocity, the ratio of head loss per unit length for a pipe flowing full to that for the same pipe flowing half full would be

2.0

1.63

0.5

0.61

164. The head loss in a pipe of diameter carrying oil at a flow rate Q over a distance l is h. This pipe is replaced by another with half the diameter, all other things remaining same, the head loss in this case would be

0.5h

2.0h

8.0h

32.0h

165. A Kaplan turbine is a

low head turbine

medium head turbine

high head turbine

None of the above

166. The net speed under which the turbine reaches its peak efficiency is called

design speed

rated speed

gross speed

operating speed

167. Dicken's formula for determining maximum flood (with usual notation), is

QP=CA3/4

QP=C1A2/3

QP=C route A

Q=177p route A

168. With the increase in supplied irrigation water, the yield of crops

increases continuously

increases up to a level and then decreases

increases up to a level and then becomes constant

decreases continuously

169. Classification of canals on the basis of alignment is

contour canal

watershed canal

side slope canal

All of the above

170. A ridge canal is also called a

watershed canal

contour canal

side slope canal

None of the above

171. The Garret diagrams are based on

Lacey's theory

Khosla's theory

Bligh's theory

Kennedy's theory

172. Main functions of headworks are

to regulate the intake of water into the canal

control silt entry

both and

None of the above

173. Which of the following is not the part of diversion headworks

Barrage

Divide wall

Head regulator

Distributary

174. The irrigation structure which is constructed at the crossing of a canal and a drain, to avoid mixing of their respective discharge, is known as

aqueduct

super passage

both and

None of the above

175. Main parts of regulation works are

canal falls

head regulator

cross regulator

All of the above

176. Canal outlets are also called

Canal escapes

Canal modules

Canal offtakes

Canal openings

177. Cross-drainage work, when bed level of river and canal are same, is known as

level crossing

aqueduct

super passage

None of the above

178. The base width of a concrete dam, in comparison to an earthen dam, is

almost equal

much larger

much smaller

None of the above

179. Which of the following does not contribute to water-logging

Inadequate drainage

Excessive tapping of water

Seepage from unlined canals

Frequent flooding

180. The most important flood control measure which can be used in isolation for protecting a major city will be

storage reservoir

construction of terraces

soil conservation measures in the upper catchment

flood embankments