water management mcqs
1. Compressibility of a liquid is defined as vertical or contraction in volume with variation of pressure. Therefore water is considered as?
2. The law which states that the intensity of pressure at any point in a liquid at rest is the same in all directions?
3. A channel artificially constructed for water conveyance of appreciable quantities with no problem of silting and scouring is called?
4. A dam which the up lift pressure of the sub-soil water by its own weight is called?
5. To dispose of the surplus water from dam, a water way is constructed called?
6. in case of silt deposition in the dam reservoir to dispose of the effectively ________________ be used?
7. The dam built for the purpose of diverting water from main stream to various courses of flow is called?
8. Specific gravity of a liquid is defined as the ratio of its specific weight to that of pure water and standard temperature and pressure. Therefore specific gravity is equal to?
9. Surface tension is the property of a liquid which enables it to resist tensile stress. the surface tension of water is equal to ______________ Kg/m?
10. An escape constructed with masonry or pitched with stones to dispose off surplus of tank or reservoir is called?
11. Sterilization is the process of killing ___________ of water borne diseases, so as to make it safe for hospital use?
12. Always flow inside the ground is?
13. The steep conduits made in the body of dam for running turbines to generate hydro-electric power are called?
14. When reservoir is full on upstream side, the maximum stress comes upon?
15. Tanda dam is constructed on river?
16. Water storage efficiency in the root zone depends upon?
17. Water available in root zone of plants, is about 50% of soil moisture content. which is always available to the plants is called?
18. __________% of total global water is saline and available in oceans?
19. An aquifer in which water contained under high pressure as the’ aquifer is sand witched between two impervious layer is called?
20. Volume of water that unit volume of aquifer will give up by gravity pull is called?
21. The piezometric level of water in the well at zero discharges is called?
22. In study of a granular material sliding on plane ground, the angle between the perpendicular and the surface in static condition is called?
23. The fixing of points in such away or the ground to have a correct lines for setting a canal or water course is called?
24. That part of the flow in a stream comes from sub-soil or valley, may be beneath the top surface of channel bed is called?
25. The ratio of specific weight of any liquid to the specific weight of water is called as?
26. The weight per unit of liquid at standard Temperature and pressure is called?
27. The falling drop of rainwater become spherical due to?
28. Piezometer tube is open to both ends mostly used to measure?
29. A flow in which velocity of water particles is same at all sections is called?
30. Flow in which each liquid particle has a definite path is called?
31. For a perfect incompressible liquid flowing in a continuous stream, the total energy of a particle remain the same, while the liquid particle move from one point to another this statement is called?
32. A channel is said lo be of most economical cross section, for a given cross-sectional area and bed slope when it?
33. in most economical Trapezoidal section, half of the Top width is equal to?
34. if the depth of water in an open channel is greater than the critical depth, the flow is called?
35. Art of growing crops, management of live stocks, husbandry and farming is called?
36. Art of making saline un-cultivable lands capable of re-cultivation is called?
37. Which of the following is a cash crop?
38. Out of a well water is more than canal water because?
39. A watershed canal?
40. The process of consolidation of stabilized earth work in canal or river embankments. In this process the soil is deposited in layers of specified thickness and at a particular moisture content is called?
41. When the reservoir is full, the maximum compressive force in a gravity dam is produced?
42. The ideal crop for wastewater or sewage irrigation is?
43. The season that starts from 1st October and ends on 31st March, runs for 182 days is called?
44. Weep holes are provided in canal lining to?
45. Development of___________in river is due to meandering?
46. Rabi crops pertains to?
47. The delta the total depth of water consumed by a crop from 1st watering when matures, the delta for rice is?
48. Sliding failure occurs in a solid gravity dam when?
49. Sediment particles smaller than 0.002 mm which do not settle in water are called?
50. An engineer who is approached by a client for the purpose of design of hydraulic structures like dam. Barrage or Regulator is called?
51. A line shown on a contour map, set out on ground between certain constant points of slope is called?
52. Cultivation made on small plane steps because of more steepness of the area is called?
53. The law that states that the discharge of sub-soil water is directly proportional to the loss of head and the area of soil sample and inversely proportional to to the length of soil sample?
54. The contour of equal water heads and pressure in the soil mass beneath retaining structure are called?
55. The minimum moisture content at which a water drop if placed on a smooth surface of soil will not be absorbed immediately by the soil is called?
56. The height from the top of the embankment to the normal water level in canal .Dam – Reservoir etc, which allows for small waves to splash without over flow is called?
57. A dam which is prevented from overturning by the action of lateral or vertical up thrust of water by its weight is called?
58. A fluid is a substance that?
59. Cavitation is caused by?
60. The last length of the river before it falls into the sea is known as?
61. The forces coming over the gravity dam is mainly resisted by?
62. The precipitation that occurs because of frontal disturbances during the movement of barometric low pressure is called?
63. An instrument used for measuring pressure head, generally made up of a small pipe tapped into the side of conduit is called?
64. hail is precipitation in the form of balls or lumps of ice of size greater than _______________ formed by alternate freezing & melting?
65. The depth of root zone for rice crop is about?
66. A flow of water for a certain discharge when total energy of flow i.e. sum of potential, kinetic and pressure energies is minimum is called?
67. A closed conduct or barrel used used for supplying water under high pressure to a turbine to generate electricity is called?
68. An earth embankment built on one or both sides of a river, some distance away from its banks to control flood is called?
69. A pipe flowing full, the liquid particles in the pipe has maximum velocity at?
70. The hydraulic gradient line (H.G.L)represents the sum of?
71. Mercury does not wet the glass because of its property of?
72. A type of flow in which water particles, while moving in the direction of flow, rotate about their mass centre is called?
73. The depth of flow at which the energy is maximum is called?
74. Water application efficiency increases if the plot to be irrigated is?
75. -Water available above the top of root zone of plants is about 15% of soil moisture contents, is mostly not available to plants celled?
76. Wilting point is that limit after that the crop starts feeding up and no water is available for plant, this point occurs after?
77. _________% of total global water is fresh and its major portion is obtained from Rains?
78. The property of soil which indicates the volume of water stored in the formation is called?
79. The property of saturated soil mass which transmits appreciable quantities . water is called?
80. The discharge of a well per unit draw down usually expressed as gallons or liters per minute is called?
81. Ground water moving down wards in the un-saturated ground above the water table is called?
82. To protect the face of embankment against the attack of wave wash with stone boulders is called?
83. The mass per unit volume of a liquid at standard temperature and pressure is called?
84. The experiment of capillary rise is performed in a glass tube of smaller diameter, because?
85. The mercury in a glass tube assumes convex shape at the top because of?
86. The property of liquid which controls its rate of flow is called?
87. When ever a body is immersed wholly or partially in water, it is lifted up by a force equal to the weight of water displaced by the body?
88. A flow in which the quantity of liquid flowing per second is constant is called?
89. A flow in which the stream lines may be represented by a straight line is called?
90. Theoretical velocity of the jet at Vena Contracta is determined by?
91. The discharge through a rectangular channel will be maximum. if its depth is?
92. The depth of water in a channel, corresponding to minimum specific energy is called?
93. A hydraulic jump to dissipate energy when flow is?
94. Art of mixing saline water with fresh water in accordance with some ratio for irrigation purpose is called?
95. Art of making saline water fit for irrigation and drinking through the processes of membrane technique and reverse osmosis is called?
96. The hydraulic structures like dams, barrages constructed on permeable foundations are likely to fail due to?
97. The meandering pattern of a river is developed by?
98. For a flood control reservoirs, the effective storage is equal to?
99. When the fluid properties do not change with time, it is a ___________ flow?
100. The precipitation that falls during the growing season of the crop is called?
101. The season that starts from 1st April and end on 30th September and run for 183 days is called?
102. The flow in the river due to the floods may be classified as?
103. An impermeable Formation which neither contains water nor transmits water may be called?
104. The delta the total depth of water consumed by crop up to its maturity, the delta of cotton is?
105. The disposal of sewage by allowing it to flow and Soak into specially leveled farm land for cultivation purpose is called?
106. The quantity of water lost by transpiration from the plants or crops and evaporation from fields adjacent to these plants is called?
107. The meandering pattern of a river is developed by?
108. A reference point on the ground of accurately known position which is a point of leveling is called?
109. The piles driven in low bearing capacity soil which does not rest on hard rock but bears the coming load due to side resistance is called?
110. The percentage of the volume of water filled in voids to the total volume of solids of soil grains is called?
111. The free distance on the paddy surface which a wind can travel to any point to rise waves is called?
112. The line in a flow net which shows the direction of flow of water through a soil mass beneath the dam are called?
113. A mine or tunnel for collecting seepage water in rock or dam is called?
114. Mean velocity of flow in a river can be directly measured by means of?
115. Direct runoff is the sum of?
116. Which of the following has highest-coefficient of discharge?
117. Aeration holes are provided to reduce the inside saturation pressure?
118. The centre of pressure of a plane submerged area which holds it in equilibrium is?
119. the phenomenon of evaporation from water surfaces, from soil surfaces around the plants and from plants and transpiration from plants is called?
120. A plot of graphical representation showing river flow against time is called?
121. If the duration of a unit hydrograph approaches zero, the resulting unit hydrograph is called?
122. Land containing high percentage of alkalies may be reclaimed by addition of?
123. The method of irrigation in which each tree is surrounded by a border to form a pool when water is supplied is called?
124. Net irrigation + field irrigation losses are the requirement of?
125. A structure made near weirs and barrages to facilitate the migration of fish up stream or down stream is called?
126. A structure made near weirs and barrages to facilitate the migration of fish up stream or down stream is called?
127. The ratio of change of discharge of an outlet to the rate of change in level of water surface in distributary at its normal depth is called?
128. The unit of kinetic viscosity is equivalent to?
129. Total energy line (T.E.L) represents the sum of?
130. Friction head loss in open channels is determined by?
131. Torsional force does not act on?
132. The specific weight of water at normal pressure of 760 mm, 4ºC temperature and at mean sea level is?
133. Bouyant force is equal to the ___________ of liquid displaced by the body in water mass?
134. The discharge through rectangular channel is maximum when Hydraulic mean depth m is equal to?
135. A structure constructed in channel width having narrow throat and raised floor in bottom, used for measuring discharge is called?
136. That rain fall which is effectively consumed by the plants to meet its consumptive needs is called?
137. The soil which are formed due to the weathering effects particularly by movement of water and are high permeable are called?
138. The unit of volume of water used in irrigation practice in FPS system is Acre-Foot. there fore one Acre- Foot is equal to?
139. A well penetrated in ground water confined between impervious layer at its top and bottom is called?
140. A fixed reference point from which the discharge of flowing water is measured is?
141. According to Khosla’s theory of seepage, the Exit gradient depends upon?
142. the ratio between the rate of change of discharge of the out let to the rate of change of discharge of the distributary is called?
143. The stability analysis of earth dam founded on cohesion less silt material be made against?
144. The discharge carrying capacity of an irrigation channel depends upon?
145. Canals normally excavated directly from river without head regulator is called?
146. Water logging is the state of the soil where the water table brought ______________capacity or root zone of plants?
147. The water particles held in soil pores of root zone by _____________ against gravity and is known as capillary water?
148. A water flow available in the drains without irrigation season i.e.flow of sanitary sewage is called?
149. The Indus plain is the main agricultural producing region in the country which receives about________________mm of rain fall annually?
150. A graph which shows the volume of a reservoir or tank at any given water level is called?
151. That point in a body at which it will balance if loaded or supported is called?
152. A curve consisting two or more arcs of different radii curving in the same direction with common tangent is called?
153. Hydrology is the science which deals with the depletion and recharge of water resources yearly therefore. its knowledge is a must to _________________ properly the water resources?
154. After rainfall the quantity of water that flows directly over the ground surface and join immediately to the river is called?
155. Infiltration capacity curve is the graphical representation, as to how the infiltration capacity varies with time after rainfall this curve was represented by?
156. When seepage water after passing the ground water aquifer joins the surface stream, such stream will be called?
157. A curve showing the maximum flow in the river and mean time reduces flow. we be called?
158. The water vapours are generally present in a atmosphere, some times isolated and sometimes mixed with other gases. in such a situation the pressure exerted by each component of mixture, will be called?
159. The difference between saturation vapour pressure and actual vapour pressure at a constant temperature is called?
160. The ratio between the actual pressure and saturation vapour present at same temperature is called?
161. A unit hydrograph is a hydrograph of runoff produced by a rainstorm of a specified duration called?
162. The floods which exceeds the designed magnitude of a reservoir is called?
163. The area irrigated in the year and it grows crops on which water rates are leveled is called?
164. A river which does not change its alignment – slope and its regime significantly is called?
165. If in a river the flood rises and falls suddenly due to storm rain, then such river is called?
166. In alluvial river due to the action of centrifugal force, bends are developed by scouring on concave and silting on convex?
167. The groyne pointing downwards in the direction of flow in fiver is called?
168. When the weight of weir balances the up lift pressure caused by the head of the water seeping below the weir bed is called?
169. he down stream sloping glacis of the Hydraulic structure is made in such a way to form automatically the _____________ and dissipate the surplus energy of flowing water?
170. The water level required on the upstream side of a canal head regulator, so as to feed the off-taking canal with its full supply is called?
171. The under sluices in a weir are provided, at the level of upstream floor dispose off the sediment deposited on downstream is called?
172. The various works constructed on river side to control the flow and pass it safely from hydraulic structures are called?
173. A regulator is water controlling structure, it is provided at the head of canal to supply water from parent canal to the branch channel is called?
174. When high flood passing down weir creating high up lift pressures and there is no flow in the canals, if such condition is taken for design and is called?
175. According to Blight, the percolating water seeps along the lower contour of the hydraulic structure, the length traversed by this water is called?
176. The loss of head H/ L is proportional to the length of creep. There fore the loss of head per unit creep length is called?
177. According to Mr. Khosla, the seeping water creates undermining and the undermining starts from?
178. Khosla provided a seepage theory for design of Hydraulic structures called?
179. The invented filter is provided just after the end of concrete floor to reduce possibility of ?
180. The inverted filter consists layer of materials of increasing ______________ from bottom to top?
181. The total length of impervious floor on down stream of the hydraulic structure is determined by Bligh’s Theory?
182. A module or outlet in which discharge is fixed and limited, irrespective fluctuations in water levels in distributary is called?
183. When the rate of change of discharge of outlet equals the rate of change of discharge of the channel, the out let is called?
184. When the high flood level of the drain is sufficiently below the bed of the Canal that the drainage water flows freely under gravity, such structure is called?
185. When FSL of the canal is sufficiently above the bed level of drainage so that canal flows under syphonis action, the structure is called?
186. An open cut given in a canal bank, suitably protected by stone pitching to the upland drainage water into the canal is called?
187. Mostly the salt of calcium and Magnesium can not cause?
188. A digging out of earth to make trench for any engineering purpose is called?
189. Velocity of flow in a sewer must be form ______________ to?
190. The aeration of water is done to remove?
191. On relative basis, when one soil is eroded as compared to other soil under same conditions, this property is called?
192. An open cut in the canal bank. with bed and sides to escape canal water through a lead channel to mix water in a nearby drain is called?
193. A structure provided when a large canal a big drainage channel approach other practically at the same level is called?
194. When FSL of the canal is sufficiently below the bottom of the drain, so that water flows freely under gravity, such structures is called?
195. The ratio of the rate of change of discharge through out let to the rate of c./v of water level of the distributary is called?
196. An outlet through which the discharge depends upon the water level in the distributary is called?
197. A module or outlet in which discharge depends upon the difference of head between distributary and the water course is called?
198. A water pool is designed on the down stream of the hydraulic structure to dissipate the energy of falling water by providing a water cushion called?
199. When a weir is constructed, the downstream .bed of the river goes on eroding and consequently causes progressive lowering of the bed on downstream of weir called?
200. To avoid scouring from end of structure, it is necessary to provide a ________________ at the exit point?
201. Now- a -days the hydraulic structures are designed. Keeping in view the flow net, this was given by?
202. At the end of hydraulic structure, the upward force of sub-soil water just becomes equal to the submerged weight of soil grains Then exit gradient will be called?
203. Mostly the hydraulic structures founded on ____________ soils fails because of undermining and uplift pressure?
204. The depth before the jump is always less then the depth after the jump. The depth before the jump is called initial depth and depth after the jump is called?
205. The structures, which are constructed on the river bed upstream of head regulator. With this clear water enters in canal such structures are called?
206. The wall of masonry or concrete, constructed at 90° to the axis of weir to separate normal weir from under sluices is called?
207. Silt free water should be supplied to the canals through?
208. The rise in river water level at up stream due to construction of weir is called?
209. If the weir flood is designed continuous with divide piers as reinforced structure,such that the weight of divide piers, keep the structure safe against uplift, is called?
210. The groyne pointing upwards direction of flow is called?
211. when ever a sloping face of river bank is protected by stone pitching against scour, the pitching is extended beyond the toe to the river side that is called?
212. In a river the flood water dries up before it joins the sea or any other river, such river is called?
213. A river before its joins the sea, gets divided into small channels, thus forming a Triangular shape called?
214. If a river or stream is collecting sediment and is building up dunes in its bed is called?
215. A particular flood which can occur in the basin in the worst meteorological and hydrological conditions is called?
216. Hydraulic structures are designed for a safe flow of flood. The floods which are equal in designed magnitude life of the project is called?
217. The percentage of culturable commended area, irrigated during the year to the total culturable commanded area on a outlet or channel is called?
218. The amount of moisture content present in the air, when it is expressed as weight per unit volume is called?
219. When the air in a atmosphere is fully saturated with the vapours present in it, then the pressure exerted by such wet air mass will be called?
220. The water evaporates from paddy surfaces to the atmosphere in the form of water vapours, these water vapours get collected in the atmosphere and behave & like?
221. During the peak stage of river, there exist an out flow from river into the ground water reservoir, in such case river will be called?
222. To be more close to the actual field conditions, some times artificial rain tests conducted, the instrument used is called?
223. In the initial stage of rainfall, when soil moisture available in the root zone is very low, the rate of infiltration?
224. The maximum rate at which the soil in given condition can absorb water is called?
225. The science of water which deals with the depletion and replenishment of water resources is called?
226. The force with which the particles of same body are held together is called?
227. The horizontal flow of water in irrigation channel or canal leading to water loss is called as?
228. The value of coefficient of discharge in comparison to cofficient of velocity is found to be?
229. Those crops which increase the nitrogen content of the soil and hence the fertility also are called?
230. The losses of irrigation water due to the seepage but That. does not join the under ground reservoir is called?