McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Civil Engineering .
| 201. |
The bed of a canal is lowered in case of |
| A. | syphon aqueduct |
| B. | canal syphon |
| C. | level crossing |
| D. | all of these |
| Answer» B. canal syphon | |
| 202. |
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» A. the catchments of former Bombay Presidency | |
| 203. |
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» D. all of the above | |
| 204. |
Which of the following statements is wrong? |
| A. | The top of dowel is kept above the free supply level by a margin of free board. |
| B. | The dowels are provided as a measure of safety for automobiles driven on the service roads |
| C. | The dowels act as curbs on the side of roadway towards the canal |
| D. | none of the above |
| Answer» D. none of the above | |
| 205. |
The flooding is also termed as wild flooding. |
| A. | Right |
| B. | Wrong |
| Answer» A. Right | |
| 206. |
The tortuosity of a meandering river is always |
| A. | equal to |
| B. | less than |
| C. | greater than |
| Answer» C. greater than | |
| 207. |
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» B. tail end | |
| 208. |
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» D. all of the above | |
| 209. |
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» D. none of these | |
| 210. |
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» B. 0.3 m to 0.6 m | |
| 211. |
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» B. module | |
| 212. |
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» A. 6% sodium carbonate and 10% clay | |
| 213. |
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» C. curved length and the straight air distance | |
| 214. |
The excapes must lead the surplus water to natural drainage. |
| A. | True |
| B. | False |
| Answer» A. True | |
| 215. |
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» B. 637 | |
| 216. |
The repelling groyne is constructed in such a way that it is pointing towards |
| A. | upstream |
| B. | downstream |
| Answer» A. upstream | |
| 217. |
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» D. all of these | |
| 218. |
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» B. saturation capacity | |
| 219. |
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» C. first watering when the crop has grown a fwd centimetres | |
| 220. |
The efficiency is a measure of conservation of head by an outlet. |
| A. | True |
| B. | False |
| Answer» A. True | |
| 221. |
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» A. Right | |
| 222. |
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» C. concrete slope weir | |
| 223. |
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» B. escape | |
| 224. |
The Inglis type fall makes use of |
| A. | straight |
| B. | horizontl |
| C. | vertical |
| Answer» B. horizontl | |
| 225. |
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» A. Agree | |
| 226. |
Gibb's module is a type of |
| A. | non-moduler outlet |
| B. | semi-modular outlet |
| C. | rigid modular outlet |
| D. | upon flume outlet |
| Answer» C. rigid modular outlet | |
| 227. |
A hydrograph representing one cm of run off from a rainfall of some unit duration and specific area distribution is known as |
| A. | hyetograph |
| B. | flood hydrograph |
| C. | unit hydrograph |
| D. | S-hydrograph |
| Answer» C. unit hydrograph | |
| 228. |
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» B. 200 | |
| 229. |
The first watering before sowing the crop, is known as |
| A. | kor watering |
| B. | paleo |
| C. | delta |
| D. | none of these |
| Answer» B. paleo | |
| 230. |
The measure adopted to reclaim the water-logged area is |
| A. | installation of lift irrigation schemes |
| B. | lining of canals |
| C. | lowering the full supply level |
| D. | all of these |
| Answer» A. installation of lift irrigation schemes | |
| 231. |
Water logging is caused due to |
| A. | inadequate drainage facilities |
| B. | over irrigation |
| C. | presence of impermeable strata |
| D. | all of these |
| Answer» D. all of these | |
| 232. |
In Sarda type fall, the length of the crest is kept |
| A. | more than |
| B. | equal to |
| C. | less than |
| Answer» B. equal to | |
| 233. |
In a super-passage, the F.S.L. of the canal is |
| A. | lower than the underside of the trough carrying drainage water |
| B. | above the bed level of the drainage trough |
| C. | in level with the drainage trough |
| D. | none of the above |
| Answer» A. lower than the underside of the trough carrying drainage water | |
| 234. |
Which of the following statement is correct? |
| A. | In free flooding, the field is divided into a number of small sized plots which are pratically level. |
| B. | In border strip method, the strips are separated by low levels. |
| C. | In furrow irrigation, the water is admitted between the rows of plants in the field. |
| D. | all of the above |
| Answer» D. all of the above | |
| 235. |
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» A. delta | |
| 236. |
A canal aligned at right angles to the contour of a country, is known as |
| A. | side slope canal |
| B. | contour canal |
| C. | water shed canal |
| D. | branch canal |
| Answer» A. side slope canal | |
| 237. |
A hydraulic jump is formed when |
| A. | a sub-critical flow strikes against a super-critical flow |
| B. | a super-critical flow strikes against a sub-critical flow |
| C. | the two flows of super-critical velocity meet each other |
| D. | the two flows of sub-critical velocity meet each other |
| Answer» B. a super-critical flow strikes against a sub-critical flow | |
| 238. |
When a canal flowing under pressure is carried below a natural drainage such that its F.S.L. does not touch the under side of the supporting structure, the structure provided is super-passage. |
| A. | Correct |
| B. | Incorrect |
| Answer» A. Correct | |
| 239. |
According to Kennedy, the silt supporting power is |
| A. | directly proportional to |
| B. | inversely proportional to |
| Answer» A. directly proportional to | |
| 240. |
Which of the following statements is correct? |
| A. | The aggrading type of river builds up its bed to a certain slope. |
| B. | The degrading type of river looses its bed gradually in the form of sediment load of the stream. |
| C. | The pattern of meander is altered by variation in discharge slope and bed forming material |
| D. | all of the above |
| Answer» D. all of the above | |
| 241. |
A part of water which exists in the porous space of the soil by molecular attraction, is known as |
| A. | capillary water |
| B. | gravitational water |
| C. | hygroscopic water |
| D. | all of these |
| Answer» A. capillary water | |
| 242. |
For a discharge of 4m3/s in Sarda type fall, |
| A. | rectangular |
| B. | trapezoidal |
| Answer» A. rectangular | |
| 243. |
A contour canal |
| A. | is most suitable in hilly areas |
| B. | irrigates only on one side |
| C. | is aligned parallel to the contour of the country |
| D. | all of the above |
| Answer» D. all of the above | |
| 244. |
Kennedy, in his silt theory, assumed that the silt is kept in suspension because of eddies generated from the |
| A. | bed only |
| B. | sides only |
| C. | whole perimeter |
| D. | any one of these |
| Answer» A. bed only | |
| 245. |
When an oven-dried sample of soil is kept open in the atmosphere, it absorbs some amount of water. This water is known as |
| A. | capillary water |
| B. | gravitational water |
| C. | hygroscopic water |
| D. | all of these |
| Answer» C. hygroscopic water | |
| 246. |
The level of a canal diversion head work depends upon |
| A. | discharge perimeter |
| B. | pond level |
| C. | full supply level of canal |
| D. | all of these |
| Answer» D. all of these | |
| 247. |
An outlet is said to be proportional, if its flexibility is |
| A. | equal to zero |
| B. | less than unity |
| C. | equal to unity |
| D. | more than unity |
| Answer» C. equal to unity | |
| 248. |
The weed growth in a canal leads to |
| A. | decrease in silting |
| B. | decrease in discharge |
| C. | increase in discharge |
| D. | increase in velocity of flow |
| Answer» B. decrease in discharge | |
| 249. |
Sandy soils with good drainage become impermeable after prolonged use, if it is irrigated with a water containing |
| A. | 25% |
| B. | 50% |
| C. | 75% |
| D. | 85% |
| Answer» D. 85% | |
| 250. |
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» B. flexibility | |
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