McqMate
| 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 | |
| 251. |
The earth's water circulatory system, is known as |
| A. | water cycle |
| B. | hydrologic cycle |
| C. | precipitation cycle |
| D. | all of these |
| Answer» B. hydrologic cycle | |
| 252. |
The discharge (Q) over trapezoidal crest of Sarda fall is |
| A. | same |
| B. | less |
| C. | more |
| Answer» C. more | |
| 253. |
The channel after attaining its section and longitudinal slope, will be said to be in |
| A. | initial |
| B. | final |
| C. | permanent |
| Answer» B. final | |
| 254. |
The ratio of the hed recovered to the head put in an outlet, is called |
| A. | proportionality |
| B. | flexibility |
| C. | sensitivity |
| D. | efficiency |
| Answer» D. efficiency | |
| 255. |
A diversion head work is constructed to |
| A. | raise water level at the head of the canal |
| B. | regulate the intake of water into the canal |
| C. | reduce fluctuations in the supply level of the river |
| D. | all of the above |
| Answer» D. all of the above | |
| 256. |
Irrigation canals are generally aligned along |
| A. | contour line |
| B. | water shed |
| C. | straight line |
| D. | valley line |
| Answer» B. water shed | |
| 257. |
Kennedy gave his own formula for the determination of mean velocity. |
| A. | Correct |
| B. | Incorrect |
| Answer» B. Incorrect | |
| 258. |
When the water is thrown into a well over a crest from where it escapes near its bottom, the type of fall is called |
| A. | rapid fall |
| B. | cylinder fall |
| C. | pipe fall |
| D. | glacis fall |
| Answer» B. cylinder fall | |
| 259. |
Cyclonic precipitation results from |
| A. | lifting of air masses converging into low pressure area |
| B. | natural rising of warmer, lighter air in colder and denser surrondings |
| C. | lifting of warm moisture-laden air masses due to topographic barriers |
| D. | all of the above |
| Answer» A. lifting of air masses converging into low pressure area | |
| 260. |
Which of the following statement is wrong? |
| A. | In a trapezoidal notch fall, the top width of the notch is kept between 3/4th to full water depth above the sill of the notch. |
| B. | The energy dissipation takes palce by the provision of roughening devices. |
| C. | The siphon fall is designed to maintain a fixed supply level in the channel. |
| D. | Energy dissipators are provided for small discharges. |
| Answer» D. Energy dissipators are provided for small discharges. | |
| 261. |
The gaps created in the bank of a canal is called a breach. |
| A. | Correct |
| B. | Incorrect |
| Answer» A. Correct | |
| 262. |
In Lane's weighted creep theory, he proposed a weight of |
| A. | three for vertical creep and one for horizontal creep |
| B. | three for horizontal creep and one for vertical creep |
| C. | two for vertical and two for horizontal creep |
| D. | any one of the above |
| Answer» A. three for vertical creep and one for horizontal creep | |
| 263. |
Escapes are also known as |
| A. | outlet |
| B. | safety valves |
| C. | regulators |
| Answer» B. safety valves | |
| 264. |
Inundation canals draw their supplies from rivers whenever there is a |
| A. | low |
| B. | high |
| C. | medium |
| Answer» B. high | |
| 265. |
The setting for a hyper-proportional outlet is |
| A. | more |
| B. | same |
| Answer» A. more | |
| 266. |
The method of irrigation used for orchards is |
| A. | free flooding |
| B. | border flooding |
| C. | check flooding |
| D. | basin flooding |
| Answer» D. basin flooding | |
| 267. |
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» A. Right | |
| 268. |
The ratio of the head recovered to the head put in an outlet, is called |
| A. | proportionality |
| B. | flexibility |
| C. | sensitivity |
| D. | efficiency |
| Answer» D. efficiency | |
| 269. |
Lining of a canal is necessary |
| A. | to minimise the seepage lossses in canal |
| B. | to prevent erosion of bed and sides due to high velocities |
| C. | to increase the discharge in canal section by increasing the velocity |
| D. | all of the above |
| Answer» D. all of the above | |
| 270. |
The movement of water through the soil surface into the soil, is called infilteration. |
| A. | Correct |
| B. | Incorrect |
| Answer» A. Correct | |
| 271. |
Consumptive use of water by a crop is equal to |
| A. | the depth of water consumed by evaporation |
| B. | the depth of water consumed by transpiration |
| C. | the depth of water consumed by evaporation and transpiration during crop growth, including water consumed by accompanying weed growth |
| D. | none of the above |
| Answer» C. the depth of water consumed by evaporation and transpiration during crop growth, including water consumed by accompanying weed growth | |
| 272. |
The duty of irrigation water goes on |
| A. | increasing |
| B. | decreasing |
| Answer» A. increasing | |
| 273. |
Which of the following is the correct sequence of the parts of a canal system? |
| A. | Head works, distributary, branch canals and minor. |
| B. | Head works, main canal, branch canal, distributary and minor. |
| C. | Head works, main canal, branch canal, minor and distributary. |
| D. | none of the above |
| Answer» B. Head works, main canal, branch canal, distributary and minor. | |
| 274. |
The alignment of a canal |
| A. | should be such, so as to ensure minimum number of cross drainage works |
| B. | on a water shed is the most economical |
| C. | should avoid valuable properties |
| D. | all of the above |
| Answer» D. all of the above | |
| 275. |
The berms provide additional strength to banks and thus make it safe against breaches. |
| A. | True |
| B. | False |
| Answer» A. True | |
| 276. |
Garret's diagram gives the graphical method of designing a channel based on |
| A. | Lacey's theory |
| B. | Gibb's theory |
| C. | Kennedy's theory |
| D. | Khosla's theory |
| Answer» C. Kennedy's theory | |
| 277. |
The fall which can be used as a meter fall, is |
| A. | vertical drop fall |
| B. | flumed glacis fall |
| C. | unflumed glacis fall |
| D. | none of these |
| Answer» A. vertical drop fall | |
| 278. |
A canal aligned roughly at right angles to the contours of the country is called ridge canal. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 279. |
According to Fanning's formula, the flood discharge (Q) in cumecs is given by |
| A. | Q = CA2/3 |
| B. | Q = CA3/4 |
| C. | Q = CA5/6 |
| D. | Q = CA7/8 |
| Answer» C. Q = CA5/6 | |
| 280. |
Super-fluous water is also called |
| A. | capillary water |
| B. | gravitational water |
| C. | hygroscopic water |
| D. | all of these |
| Answer» B. gravitational water | |
| 281. |
The hydrology is a science which deals with the |
| A. | occurrence of water on the earth |
| B. | distribution of water on the earth |
| C. | movement of water on the earth |
| D. | all of these |
| Answer» D. all of these | |
| 282. |
The ratio between the depths of water levels over crest on the downstream and upstream of the module, is known as |
| A. | flexibility |
| B. | sensitivity |
| C. | drowning ratio |
| D. | module ratio |
| Answer» C. drowning ratio | |
| 283. |
The duty of irrigation water will be less if |
| A. | area irrigated is more |
| B. | water supply required is less |
| C. | water supply required is more |
| D. | none of these |
| Answer» C. water supply required is more | |
| 284. |
The width and length of mender as well as width of river, vary approximately with |
| A. | discharge |
| B. | square of discharge |
| C. | square root of discharge |
| D. | cube root of discharge |
| Answer» C. square root of discharge | |
| 285. |
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» A. Correct | |
| 286. |
The cylinder or well fall is quite suitable and economical for |
| A. | low discharges and low drops |
| B. | low discharges and high drops |
| C. | high discharges and low drops |
| D. | high discharges and high drops |
| Answer» B. low discharges and high drops | |
| 287. |
The setting of an outlet is defined as the ratio of the |
| A. | rate of change of discharge of an outlet to the rate of change of discharge of the distributing channel |
| B. | rate of change of discharge of an outlet to the rate of change in level of the distributing surface, referred to normal depth of the channel |
| C. | depth of the sill or the crest level of the module below the full supply of the distributing channel to the full supply depth of the distributing channel |
| D. | head recovered to the head put in an outlet |
| Answer» C. depth of the sill or the crest level of the module below the full supply of the distributing channel to the full supply depth of the distributing channel | |
| 288. |
A sudden fall of level of ground along the alignment of a canal joined by an inclined bed is called a |
| A. | rapid fall |
| B. | cylinder fall |
| C. | sudden fall |
| D. | hydraulic jump |
| Answer» A. rapid fall | |
| 289. |
Capillary water is a useful soil moisture for the growth of plants. |
| A. | Yes |
| B. | No |
| Answer» A. Yes | |
| 290. |
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» B. culturable commanded area | |
| 291. |
The standard height of a standard rain gauge is |
| A. | 10 cm |
| B. | 20 cm |
| C. | 30 cm |
| D. | 40 cm |
| Answer» C. 30 cm | |
| 292. |
The saturation gradient in an ordinary loam soil is |
| A. | 1 ; 1 |
| B. | 2 ; 1 |
| C. | 3 ; 1 |
| D. | 4 ; 1 |
| Answer» D. 4 ; 1 | |
| 293. |
The field capacity of a soil depends upon |
| A. | capillary tension in soil |
| B. | porosity of soil |
| C. | either (a) or (b) |
| D. | both (a) and (b) |
| Answer» D. both (a) and (b) | |
| 294. |
For the repairing of an old but sound concrete lining, the lining preferred is |
| A. | shotcrete lining |
| B. | precast concrete lining |
| C. | soil cement lining |
| D. | sodium carbonate lining |
| Answer» A. shotcrete lining | |
| 295. |
The term balancing depth has the same meaning as the depth of water in canal. |
| A. | Right |
| B. | Wrong |
| Answer» B. Wrong | |
| 296. |
When the critical velocity ratio is less than one, the channel is said to be in silting. |
| A. | True |
| B. | False |
| Answer» A. True | |
| 297. |
For potato, sugarcane and groundnut, the furrow method of irrigation is adopted. |
| A. | Yes |
| B. | No |
| Answer» A. Yes | |
| 298. |
Where steep land is available, the method of irrigation adopted is |
| A. | free flooding |
| B. | border flooding |
| C. | check flooding |
| D. | basin flooding |
| Answer» A. free flooding | |
| 299. |
A channel is said to be in scouring when the critical velocity ratio is |
| A. | equal to |
| B. | less than |
| C. | greater than |
| Answer» C. greater than | |
| 300. |
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» D. 5 m | |
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