MCQOPTIONS
Saved Bookmarks
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.
| 201. |
According to Khosla's theory, the undermining of the floor starts from the |
| A. | starting end |
| B. | tail end |
| C. | intermediate point |
| D. | foundation bed |
| Answer» C. intermediate point | |
| 202. |
Lining of a canal |
| A. | assures economical water distribution |
| B. | reduces possibility of breaching |
| C. | increases available head for power generation |
| D. | all of the above |
| Answer» E. | |
| 203. |
The amount of water required to fill up the pore spaces in soil particles by replacing all air held in pore spaces, is known as |
| A. | field capacity |
| B. | saturation capacity |
| C. | available moisture |
| D. | all of these |
| Answer» C. available moisture | |
| 204. |
When the difference in weir crest and downstream river bed is limited into 3 metres, the weir, generally used is |
| A. | vertical drop weir |
| B. | drystone slope weir |
| C. | concrete slope weir |
| D. | parabolic weir |
| Answer» D. parabolic weir | |
| 205. |
Inglis formula is used for estimating flood discharge for |
| A. | the catchments of former Bombay Presidency |
| B. | the catchments of oil Hyderabad State |
| C. | the Madras catchments |
| D. | none of the above |
| Answer» B. the catchments of oil Hyderabad State | |
| 206. |
The crops require maximum water during |
| A. | first watering before sowing the crops |
| B. | last watering before harvesting |
| C. | first watering when the crop has grown a fwd centimetres |
| D. | all of the above |
| Answer» D. all of the above | |
| 207. |
The excapes must lead the surplus water to natural drainage. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 208. |
The width of dowel is, usually, kept from |
| A. | 0.1 m to 0.3 m |
| B. | 0.3 m to 0.6 m |
| C. | 0.6 m to 0.9 m |
| D. | 0.9 m to 1.2 m |
| Answer» C. 0.6 m to 0.9 m | |
| 209. |
In the case of a proportional outlet, the setting is equal to the ratio of outlet index to the channel index. |
| A. | Correct |
| B. | Incorrect |
| Answer» B. Incorrect | |
| 210. |
Interception losses are due to |
| A. | only (i) |
| B. | (i)and(ii) |
| C. | (ii) and (iii) |
| D. | (i), (ii) and (iii) |
| Answer» B. (i)and(ii) | |
| 211. |
To determine the discharge at a section in a stream from its rating curve, the required data are |
| A. | (i) and (ii) |
| B. | (ii) and (iii) |
| C. | only (ii) |
| D. | only (iii) |
| Answer» D. only (iii) | |
| 212. |
The science which deals with the physical features and conditions of water on the earth surface is called |
| A. | hydrometry |
| B. | hydrography |
| C. | hydrosphere |
| D. | hydraulics |
| Answer» C. hydrosphere | |
| 213. |
A device which ensures a constant discharge of water passing from one channel to another irrespective of water level in each within certain specified limits, is called |
| A. | flume |
| B. | module |
| C. | meter |
| D. | none of these |
| Answer» C. meter | |
| 214. |
The movement of water through the soil surface into the soil, is called infilteration. |
| A. | Correct |
| B. | Incorrect |
| Answer» B. Incorrect | |
| 215. |
A land is said to be water-logged when |
| A. | the air circulation is stopped in the root zone due to the rise in water table |
| B. | it is submerged in flood |
| C. | the doil pores within a depth of 40 cm are saturated |
| D. | all of the above |
| Answer» B. it is submerged in flood | |
| 216. |
An outlet in which the discharge depends upon the difference in level between the water levels in distributing channel and the water course, is known as |
| A. | non-modular outlet |
| B. | semi-module outlet |
| C. | modular outlet |
| D. | rigid module |
| Answer» B. semi-module outlet | |
| 217. |
A part of water which will move out of the soil, if proper drainage is provided, is known as gravitational water. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 218. |
For a canal which irrigate the area directly, the fall should be provided at a location where the F.S.L. outstrips the gound level, but before the bed of the canal comes into filling. |
| A. | Right |
| B. | Wrong |
| Answer» B. Wrong | |
| 219. |
The borrow pits should, preferably, be taken from |
| A. | the field on the right side of canal |
| B. | the field on the left side of the canal |
| C. | the central half width of the section of the canal |
| D. | any one of the above |
| Answer» D. any one of the above | |
| 220. |
For irrigation purposes, the p-H value of water should be |
| A. | between 3 and 6 |
| B. | between 6 and 8.5 |
| C. | between 8.5 and 11 |
| D. | more than 11 |
| Answer» C. between 8.5 and 11 | |
| 221. |
The crest of the under-sluices should be lower than the crest of the head regulator (if silt excluder is provided by at least |
| A. | 1 to 1.2 m |
| B. | 1.8 to 2 m |
| C. | 2 to 2.5 m |
| D. | 4 to 5 m |
| Answer» C. 2 to 2.5 m | |
| 222. |
Variability of rainfall is |
| A. | only (i) |
| B. | (i) and (ii) |
| C. | only (iii) |
| D. | (ii) and (iii) |
| Answer» D. (ii) and (iii) | |
| 223. |
The capacity of escape channel should not be less than |
| A. | 20% |
| B. | 30% |
| C. | 40% |
| D. | 50% |
| Answer» E. | |
| 224. |
The maximum rainfall during a short period measured in mm / hour is called mean annual rainfall. |
| A. | Agree |
| B. | Disagree |
| Answer» C. | |
| 225. |
The slope of a canal, for a discharge of 300 cumecs, should be |
| A. | 1 in 4000 |
| B. | 1 in 6000 |
| C. | 1 in 8000 |
| D. | 1 in 10000 |
| Answer» D. 1 in 10000 | |
| 226. |
In case of small channels, the borrow pits should start from a distance not less than |
| A. | 2 m |
| B. | 3 m |
| C. | 4 m |
| D. | 5 m |
| Answer» E. | |
| 227. |
The first watering, when the crop has grown a few centimetres, is called paleo. |
| A. | Agree |
| B. | Disagree |
| Answer» C. | |
| 228. |
Assertion A : To estimate the rainfall over a catchment, the number of raingauges required per unit area is large for hilly areas. |
| A. | Both A and R are true and R is the correct explanation of A |
| B. | Both A and R are true but R is not the correct explanation of A |
| C. | A is true but R is false |
| D. | A is false but R is true |
| Answer» B. Both A and R are true but R is not the correct explanation of A | |
| 229. |
Instantaneous unit hydrograph is a hydrograph of |
| A. | (i) and (ii) |
| B. | (i)and(iv) |
| C. | (ii) and (iii) |
| D. | (iii) and (iv) |
| Answer» D. (iii) and (iv) | |
| 230. |
The optimum depth of kot watering is 19 cm for |
| A. | wheat |
| B. | sugar-cane |
| C. | rice |
| D. | cotton |
| Answer» D. cotton | |
| 231. |
The term balancing depth has the same meaning as the depth of water in canal. |
| A. | Right |
| B. | Wrong |
| Answer» C. | |
| 232. |
The optimum depth of kor watering for wheat in the plains of north India is |
| A. | 13.5 cm |
| B. | 16.5 cm |
| C. | 19 cm |
| D. | 21 cm |
| Answer» B. 16.5 cm | |
| 233. |
The average delta of rice crop is nearly |
| A. | 30 cm |
| B. | 60 cm |
| C. | 120 cm |
| D. | 150 cm |
| Answer» D. 150 cm | |
| 234. |
The maximum depth in soil strata, in which the crop spreads its root system, and derives water from the soil, is called |
| A. | kot depth |
| B. | root zone depth |
| C. | delta |
| D. | overlap allowance |
| Answer» C. delta | |
| 235. |
The water content at which plants can no-longer extract sufficient water from the soil for its growth, is called |
| A. | field capacity |
| B. | saturation capacity |
| C. | permanent wilting point |
| D. | available moisture |
| Answer» D. available moisture | |
| 236. |
The kor depth for rice is 19 cm and kor period is 14 days. The outlet factor for the crop in hectares per cumec will be |
| A. | 437 |
| B. | 637 |
| C. | 837 |
| D. | 1037 |
| Answer» C. 837 | |
| 237. |
The duty of a crop is 432 hectares per cumec when the base period of the crop is 100 days. The delta for the crop will be |
| A. | 100 |
| B. | 200 |
| C. | 432 |
| D. | 864 |
| Answer» C. 432 | |
| 238. |
The first watering before sowing the crop, is known as |
| A. | kor watering |
| B. | paleo |
| C. | delta |
| D. | none of these |
| Answer» C. delta | |
| 239. |
The area in which crop is grown at a particular time or crop season, is called |
| A. | gross commanded area |
| B. | culturable commanded area |
| C. | culturable uncultivated area |
| D. | none of these |
| Answer» C. culturable uncultivated area | |
| 240. |
The total depth of water required by a crop during the entire period the crop is in the field, is known as |
| A. | delta |
| B. | duty |
| C. | base period |
| D. | crop period |
| Answer» B. duty | |
| 241. |
The whole period of cultivation from the time when irrigation water is first supplied for preparation of the ground to its last watering before harvesting, is called |
| A. | base period |
| B. | crop period |
| C. | kor period |
| D. | none of these |
| Answer» B. crop period | |
| 242. |
A structure constructed in an irrigation canal for the purpose of wasting some of its water, is known as a |
| A. | fall |
| B. | escape |
| C. | regulator |
| D. | none of these |
| Answer» C. regulator | |
| 243. |
The ratio of the rate of change of discharge of an outlet to the rate of change of the discharge of the distributing channel, is termed as |
| A. | proportionality |
| B. | flexibility |
| C. | sensitivity |
| D. | efficiency |
| Answer» C. sensitivity | |
| 244. |
The graphical representation of average rainfall and rainfall excess (i.e. rainfall minus infiltration) rates over specified areas during successive unit time intervals during a storm is known as |
| A. | hydrograph |
| B. | unit hydrograph |
| C. | hyetograph |
| D. | none of these |
| Answer» D. none of these | |
| 245. |
The tortuosity of a meandering river is always |
| A. | equal to |
| B. | less than |
| C. | greater than |
| Answer» D. | |
| 246. |
Rate of evaporation from a water surface increases if |
| A. | (i) and (ii) |
| B. | (i) and (iii) |
| C. | (ii) and (iii) |
| D. | (i). (ii) and (iii) |
| Answer» C. (ii) and (iii) | |