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MCQOPTIONS
This section includes 246 Mcqs, each offering curated multiple-choice questions to sharpen your Irrigation Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 151. |
The precipitation caused by natural rising of warmer lighter air in colder and denser surroundings, is called |
| A. | convective precipitation |
| B. | orographic precipitation |
| C. | cyclonic precipitation |
| D. | none of these |
| Answer» B. orographic precipitation | |
| 152. |
The commonly used rain gauge is |
| A. | weighing bucket type |
| B. | tipping bucket type |
| C. | float type |
| D. | none of these |
| Answer» D. none of these | |
| 153. |
A weir fails due to |
| A. | rupture of floor due to uplift |
| B. | rupture of floor due to suction caused by standing wave |
| C. | scour on the upstream and downstream of the weir |
| D. | all of the above |
| Answer» E. | |
| 154. |
The Sarda canal has a |
| A. | glacis type fall |
| B. | vertical drop fall |
| C. | Ogee fall |
| D. | rapid fall |
| Answer» C. Ogee fall | |
| 155. |
The opening in the weir wall with a crest at low level on the canal side is known as under sluice or scouring sluice. |
| A. | Correct |
| B. | Incorrect |
| Answer» B. Incorrect | |
| 156. |
Distributary head regulators are provided |
| A. | to control the supplies to the off-taking channel |
| B. | to control the silt entry in the off-taking canal |
| C. | to stop the supply, when not needed, in the off-taking canal |
| D. | all of the above |
| Answer» E. | |
| 157. |
A groyne with a curved head is known as |
| A. | hockey groyne |
| B. | burma groyne |
| C. | denehy groyne |
| D. | none of these |
| Answer» B. burma groyne | |
| 158. |
The depth of root zone is 90 cm for |
| A. | wheat |
| B. | sugar cane |
| C. | rice |
| D. | cotton |
| Answer» D. cotton | |
| 159. |
The flexibility of a hyper-proportional outlet is |
| A. | greater than |
| B. | equal to |
| C. | less than |
| Answer» B. equal to | |
| 160. |
In a proportional outlet, the rate of change of its discharge is |
| A. | equal to |
| B. | more than |
| C. | less than |
| Answer» B. more than | |
| 161. |
A parabolic glacis type fall is commonly known as |
| A. | Montague fall |
| B. | Inglis fall |
| C. | Sarda fall |
| D. | vertical type fall |
| Answer» B. Inglis fall | |
| 162. |
When discharge of an outlet is independent of the water levels in the water course and the distributary, the outlet is termed as a |
| A. | flexible outlet |
| B. | non-modular outlet |
| C. | semi-module outlet |
| D. | rigid module |
| Answer» E. | |
| 163. |
Crop ratio is the ratio of area irrigated |
| A. | in Rabi season to Kharif season |
| B. | in Kharif season to Rabi season |
| C. | under perennial crop to total crop |
| D. | under perennial crop to non-perennial crop |
| Answer» C. under perennial crop to total crop | |
| 164. |
Which of the following is a type of semi-module outlet? |
| A. | Submerged pipe outlet |
| B. | Open flume outlet |
| C. | Kennedy's gauge outlet |
| D. | all of these |
| Answer» D. all of these | |
| 165. |
The coefficient of creep is the reciprocal of percolation coefficient. |
| A. | Right |
| B. | Wrong |
| Answer» B. Wrong | |
| 166. |
The basic factor which controls the process of meandering is |
| A. | discharge |
| B. | valley slope |
| C. | bed and side resistance |
| D. | all of these |
| Answer» E. | |
| 167. |
The main cause of silting in channel is |
| A. | non-regime section |
| B. | inadequate slope |
| C. | defective head regulator |
| D. | all of these |
| Answer» E. | |
| 168. |
For Madras catchments, the flood discharge is estimated from Q = CA2/3. This formula is known as |
| A. | Dicken's formula |
| B. | Ryve's formula |
| C. | Nawab Jang Bahadur formula |
| D. | Inglis formula |
| Answer» C. Nawab Jang Bahadur formula | |
| 169. |
For low navigation dams, the type of gate used is |
| A. | rolling gate |
| B. | bear trap gate |
| C. | vertical lift gate |
| D. | drum gate |
| Answer» C. vertical lift gate | |
| 170. |
In Bligh's creep theory, it is assumed that the percolation water creep |
| A. | along the contact of the base profile of the apron with the sub-soil |
| B. | in a straight path under the floor |
| C. | in a straight path under the foundation work |
| D. | none of the above |
| Answer» B. in a straight path under the floor | |
| 171. |
Nawab Jang Bahadur formula is used to estimate the flood discharge of American catchments |
| A. | Right |
| B. | Wrong |
| Answer» C. | |
| 172. |
A river meandering through an alluvial plain has a series of consecutive curves of reversed order connected with short straight sketches, is called |
| A. | crossing |
| B. | meandering belt |
| C. | meandering length |
| D. | none of these |
| Answer» B. meandering belt | |
| 173. |
The function of a barrage is different to that a weir. |
| A. | Correct |
| B. | Incorrect |
| Answer» C. | |
| 174. |
In an Inglis type fall, the baffle holds the jump stable on a horizontal platform. |
| A. | Agree |
| B. | Disagree |
| Answer» B. Disagree | |
| 175. |
The water shed canal is also called |
| A. | side slope canal |
| B. | contour canal |
| C. | ridge canal |
| D. | all of these |
| Answer» D. all of these | |
| 176. |
In a flexible outlet, the discharge depends upon the |
| A. | water level in distributary |
| B. | water level in water course |
| C. | difference of water levels between distributary and water course |
| D. | none of the above |
| Answer» B. water level in water course | |
| 177. |
The knowledge of hydrology is necessary in civil engineering for |
| A. | designing and construction of irrigation structures |
| B. | designing and construction of bridges and culverts |
| C. | flood control works |
| D. | all of these |
| Answer» E. | |
| 178. |
The irrigation engineering may be defined as |
| A. | the process of artificially supplying water to soil for raising crops |
| B. | a science of planning and designing an efficient and economic irrigation system |
| C. | the engineering of controlling and harnessing the various natural sources of water, by the construction of dams, canals and finally distributing the water to the agricultural fields |
| D. | all of the above |
| Answer» E. | |
| 179. |
The loss of head per unit length of creep is called |
| A. | coefficient of creep |
| B. | percolation coefficient |
| C. | Lane's coefficient |
| D. | none of these |
| Answer» C. Lane's coefficient | |
| 180. |
Rivers on alluvial plains may be |
| A. | meandering type |
| B. | aggrading type |
| C. | degrading type |
| D. | all of these |
| Answer» E. | |
| 181. |
Lacey's theory as applied to channel design, involves trial and error procedure. |
| A. | Agree |
| B. | Disagree |
| Answer» C. | |
| 182. |
Liquid precipitation consists of |
| A. | snow |
| B. | hail |
| C. | sleet |
| D. | rainfall |
| Answer» E. | |
| 183. |
When the irrigation canal and the drain are at the same level, then the cross drainage work is achieved by providing a |
| A. | aqueduct |
| B. | super-passage |
| C. | level crossing |
| D. | canal syphon |
| Answer» D. canal syphon | |
| 184. |
A canal sligned nearly parallel to the contours of a country, is known as |
| A. | side slope canal |
| B. | contour canal |
| C. | water shed canal |
| D. | ridge canal |
| Answer» C. water shed canal | |
| 185. |
The amount of precipitation is measured by |
| A. | rain gauge |
| B. | osmoscope |
| C. | turbidimeter |
| D. | all of these |
| Answer» B. osmoscope | |
| 186. |
The duty at outlet is called capacity factor. |
| A. | Correct |
| B. | Incorrect |
| Answer» C. | |
| 187. |
The incoherent alluvium is a soil composed of loose granular graded material which can be scoured with the same ease with which it is deposited. |
| A. | Right |
| B. | Wrong |
| Answer» B. Wrong | |
| 188. |
For closed growing crops (such as wheat), the method of irrigation used is |
| A. | free flooding |
| B. | border flooding |
| C. | check flooding |
| D. | basin flooding |
| Answer» C. check flooding | |
| 189. |
A baffle wall is a sort of low weir constructed at the end of the cistern to |
| A. | head up water to its upstream to such a height that hydraulic jump is formed |
| B. | withstand the actual impact of the high velocity jet to dissipate the energy |
| C. | both (a) and (b) |
| D. | none of the above |
| Answer» D. none of the above | |
| 190. |
The bed of a canal is lowered in case of |
| A. | syphon aqueduct |
| B. | canal syphon |
| C. | level crossing |
| D. | all of these |
| Answer» C. level crossing | |
| 191. |
The sodium carbonate lining consists of at lest |
| A. | 6% sodium carbonate and 10% clay |
| B. | 10% sodium carbonate and 6% clay |
| C. | 1% sodium carbonate and 6% clay |
| D. | 1% clay and 6% sodium carbonate |
| Answer» B. 10% sodium carbonate and 6% clay | |
| 192. |
The estimation of flood can be made |
| A. | by physical indication of past floods |
| B. | by flood discharge formulae |
| C. | by unit hydrograph |
| D. | all of these |
| Answer» E. | |
| 193. |
The degree of sinuosity is the ratio between the |
| A. | meander length and width of meander |
| B. | meander length and the width of river |
| C. | curved length and the straight air distance |
| D. | none of these |
| Answer» D. none of these | |
| 194. |
The flooding is also termed as wild flooding. |
| A. | Right |
| B. | Wrong |
| Answer» B. Wrong | |
| 195. |
The repelling groyne is constructed in such a way that it is pointing towards |
| A. | upstream |
| B. | downstream |
| Answer» B. downstream | |
| 196. |
The Inglis type fall makes use of |
| A. | straight |
| B. | horizontl |
| C. | vertical |
| Answer» C. vertical | |
| 197. |
The irrigation water is said to be unsatisfactory, if it contains |
| A. | chemicals toxic to plants or to persons using plants as food |
| B. | chemicals which react with the soil to produce unsatisfactory moisture characteristics |
| C. | bacteria injurious to persons or animals eating plants irrigated with water |
| D. | all of the above |
| Answer» E. | |
| 198. |
A groyne is a structure constructed transverse to the river flow and extend from the bank into the river upto a certain limit. |
| A. | Agree |
| B. | Disagree |
| Answer» B. Disagree | |
| 199. |
Which of the salt present in water is harmful for cultivation purposes? |
| A. | Sodium carbonate |
| B. | Potassium sulphate |
| C. | Calcium sulphate |
| D. | none of these |
| Answer» E. | |
| 200. |
The efficiency is a measure of conservation of head by an outlet. |
| A. | True |
| B. | False |
| Answer» B. False | |