McqMate
| 301. |
Lacey assumed a trapezoidal cross-section of a regime channel |
| A. | Yes |
| B. | No |
| Answer» B. No | |
| 302. |
Lining of a canal |
| A. | increases |
| B. | decreases |
| C. | does not effect |
| Answer» B. decreases | |
| 303. |
The berms when fully formed |
| A. | reduce the absorption losses and prevents leaks |
| B. | protect the bank from erosion because of wave action |
| C. | provide a scope for future widening the channel |
| D. | all of the above |
| Answer» D. all of the above | |
| 304. |
The smooth entry, the regulators are aligned at an angle of |
| A. | 60? |
| B. | 80? |
| C. | 110? |
| D. | 130? |
| Answer» C. 110? | |
| 305. |
Irrigation is supplementary to rainfall. |
| A. | Agree |
| B. | Disagree |
| Answer» A. Agree | |
| 306. |
Trough stage of river is most suitable location for diversion head works. |
| A. | Yes |
| B. | No |
| Answer» A. Yes | |
| 307. |
A useful soil moisture for plant growth is |
| A. | capillary water |
| B. | gravitational water |
| C. | hygroscopic water |
| D. | all of these |
| Answer» A. capillary water | |
| 308. |
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» A. non-modular outlet | |
| 309. |
The river training works are adopted on a river |
| A. | to pass high flood discharge safely and quickly through the breach |
| B. | to direct and guide the river flow |
| C. | to reduce bank erosion to a minimum |
| D. | all of the above |
| Answer» D. all of the above | |
| 310. |
The science which deals with the measurement of water is called hydrometry. |
| A. | True |
| B. | False |
| Answer» A. True | |
| 311. |
The gap or margin of height, between full supply level (F.S.L.) and top of the bank is called |
| A. | free board |
| B. | dowel |
| C. | inspection roadway |
| D. | berm |
| Answer» A. free board | |
| 312. |
The optimum depth of kot watering is 19 cm for |
| A. | wheat |
| B. | sugar-cane |
| C. | rice |
| D. | cotton |
| Answer» C. rice | |
| 313. |
The width of meandering belt is the |
| A. | transverse distance between the apex point of one curve and apex point on reverse curve |
| B. | axial distance along the river between tangent point of one curve and tangent point of other curve of same order |
| C. | axial distance along the river between the apex point of one curve and apex point on reverse curve |
| D. | transverse distance along the river between tangent point of one curve and tangent point of other curve of same order |
| Answer» A. transverse distance between the apex point of one curve and apex point on reverse curve | |
| 314. |
The function of a scouring sluice is |
| A. | to control the silt entry into the canal |
| B. | to scour the silt deposited in the river bed above the approach channel |
| C. | to pass the low floods without dropping the shutters of the main weir |
| D. | all of the above |
| Answer» D. all of the above | |
| 315. |
In case of syphon aqueduct, the H.F.L. of the drain is |
| A. | much below the bottom of the canal trough |
| B. | much higher above the canal bed |
| C. | in level with the canal bed |
| D. | none of the above |
| Answer» B. much higher above the canal bed | |
| 316. |
A canal head work in rocky stage of a river is not suitable because |
| A. | more cross drainage works are required |
| B. | a costly head regulator is required |
| C. | more falls are necessary to dissipate the energy |
| D. | all of the above |
| Answer» D. all of the above | |
| 317. |
Non-silting, non-scouring velocity is called |
| A. | mean |
| B. | critical |
| Answer» B. critical | |
| 318. |
Sprinklar irrigation is adopted for |
| A. | level |
| B. | uneven |
| C. | hilly |
| Answer» B. uneven | |
| 319. |
In a Sarda type fall, the trapezoidal crest is used for discharges over 14 m3/s. |
| A. | Correct |
| B. | Incorrect |
| Answer» A. Correct | |
| 320. |
The flexibility of a sub-proportional outlet is less than one |
| A. | Yes |
| B. | No |
| Answer» A. Yes | |
| 321. |
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» A. True | |
| 322. |
In level crossing, the water level of canal is much higher than that of the drainage. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 323. |
The length of groyne depends upon the magnitude of river training required. |
| A. | Right |
| B. | Wrong |
| Answer» A. Right | |
| 324. |
When the quantity of the earth is much in excess of the quantity required for filling, it has to be deposited in the form of spoil banks. The spoil banks are made on |
| A. | the right side |
| B. | the left side |
| C. | both the sides |
| D. | all of these |
| Answer» D. all of these | |
| 325. |
Irrigation |
| A. | increases |
| B. | decreases |
| Answer» A. increases | |
| 326. |
Tortuosity of a meandering river is the ratio of |
| A. | meander length to width of meander |
| B. | meander length to width of river |
| C. | curved length along the river to the direct axial length of the river |
| D. | direct axial length of the river to the curved length along the river |
| Answer» C. curved length along the river to the direct axial length of the river | |
| 327. |
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» B. between 6 and 8.5 | |
| 328. |
The precipitation caused by lifting of warm moisture laden air masses due to topographic barriers, is called |
| A. | convective precipitation |
| B. | orographic precipitation |
| C. | cyclonic precipitation |
| D. | none of these |
| Answer» B. orographic precipitation | |
| 329. |
Which of the following is a type of non-modular outlet? |
| A. | Submerged pipe outlet |
| B. | Open-flume outlet |
| C. | Kennedy's gauge outlet |
| D. | all of these |
| Answer» A. Submerged pipe outlet | |
| 330. |
Flood frequency denotes the likelyhood of flood being equalled or exceeded. |
| A. | Yes |
| B. | No |
| Answer» A. Yes | |
| 331. |
A degrading river is a scouring river. |
| A. | Yes |
| B. | No |
| Answer» A. Yes | |
| 332. |
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» C. permanent wilting point | |
| 333. |
Lacey gave a relation between |
| A. | velocity and hydraulic mean depth |
| B. | area and velocity |
| C. | both (a) and (b) |
| D. | none of these |
| Answer» C. both (a) and (b) | |
| 334. |
According to Khosla's theory, the critical hydraulic gradient for alluvial soils is approximately equal to |
| A. | 1 |
| B. | 1.5 |
| C. | 2 |
| D. | 2.5 |
| Answer» A. 1 | |
| 335. |
When the bed level of the canal is higher than the highest flood level (H.F.L.) of the drainage, then the cross drainage work is said to be |
| A. | aqueduct |
| B. | super-passage |
| C. | canal syphon |
| D. | syphon aqueduct |
| Answer» A. aqueduct | |
| 336. |
The floor of the aqueduct is subjected to uplift pressure due to |
| A. | seepage of water from the canal to the drainage |
| B. | sub-soil water table in the drainage bed |
| C. | both (a) and (b) |
| D. | none of the above |
| Answer» C. both (a) and (b) | |
| 337. |
When the levels are such that the F.S.L. of the canal is much above the bed level of the drainage trough, so that the canal runs under syphonic action under the trough, the structure provided is known as |
| A. | syphon aqueduct |
| B. | level crossing |
| C. | canal syphon |
| D. | super syphon |
| Answer» C. canal syphon | |
| 338. |
A fall, which maintains the depth is a |
| A. | trapezoidal notch fall |
| B. | rectangular notch fall |
| C. | low weir fall |
| D. | all of these |
| Answer» D. all of these | |
| 339. |
The soil becomes, practically, infertile if its p-H value is |
| A. | 0 |
| B. | 7 |
| C. | 11 |
| D. | 14 |
| Answer» C. 11 | |
| 340. |
For the pipe outlet to be proportional, the outlet is set at |
| A. | 0.3 times |
| B. | 0.5 times |
| C. | 0.8 times |
| Answer» A. 0.3 times | |
| 341. |
In a lined canal, the resistance to flow decreases and velocity of flow increases. |
| A. | Agree |
| B. | Disagree |
| Answer» A. Agree | |
| 342. |
According to Lacey, a channel is said to be in regime, if |
| A. | it flows in incoherent unlimited alluvium of the same character as that transported material |
| B. | its discharge is constant |
| C. | the silt grade and the silt charge are constant |
| D. | all of the above |
| Answer» D. all of the above | |
| 343. |
Which of the following satement is correct? |
| A. | In Lacey's silt theory, the derivation of the various formulae depends upon a single factor 'f'. |
| B. | Lacey's equation includes a concentration of silt as variable. |
| C. | Lacey properly define the silt grade and silt charge. |
| D. | Lacey introduced semi-ellipse as ideal shape of a regime channel. |
| Answer» A. In Lacey's silt theory, the derivation of the various formulae depends upon a single factor 'f'. | |
| 344. |
Okhla weir on Yamuna river, in Delhi, is an example of |
| A. | vertical drop weir |
| B. | drystone slope weir |
| C. | concrete slope weir |
| D. | parabolic weir |
| Answer» B. drystone slope weir | |
| 345. |
Kennedy gave a relation between |
| A. | velocity and hydraulic mean depth |
| B. | area and velocity |
| C. | critical velocity and the depth of flowing water |
| D. | all of the above |
| Answer» C. critical velocity and the depth of flowing water | |
| 346. |
Check flooding method of irrigation is used for |
| A. | closed growing crops |
| B. | tracts with flat gradients |
| C. | crops which can stand inundation of water for sometime |
| D. | crops such as sugarcane, potatoes etc. |
| Answer» C. crops which can stand inundation of water for sometime | |
| 347. |
Lacey assumed that silt is kept in suspension because of the normal components of eddies generated from the |
| A. | bed only |
| B. | side only |
| C. | whole perimeter |
| D. | none of these |
| Answer» C. whole perimeter | |
| 348. |
In Bligh's creep theory |
| A. | there is no distinction between horizontal and vertical creep |
| B. | loss of head does not take place in the same proportion as creep length |
| C. | the uplife pressure distribution is not linear, but follows a sine curve |
| D. | all of the above |
| Answer» D. all of the above | |
| 349. |
Dicken's formula for high flood discharge is useful for catchments in |
| A. | Southern India |
| B. | Northern India |
| C. | Eastern India |
| D. | Western India |
| Answer» B. Northern India | |
| 350. |
Intensity of irrigation should be increased in order to prevent the area from water logging. |
| A. | Yes |
| B. | No |
| Answer» B. No | |
| 351. |
The irrigation is necessary in an area |
| A. | where there is a scanty rainfall |
| B. | where the rainfall is non-uniform |
| C. | where commercial crops require more water |
| D. | all of the above |
| Answer» D. all of the above | |
| 352. |
The infertility of the soil in water-logged areas is due to |
| A. | inhibiting activity of the soil bacteria |
| B. | growth of weeds |
| C. | increasing of harmful salts |
| D. | all of these |
| Answer» D. all of these | |
| 353. |
A canal outlet should |
| A. | be so designed that the farmer cannot temper with its functioning |
| B. | be simple so that it can be constructed or fabricated by local masons |
| C. | draw its fare share of silt carried by the distributing channel |
| D. | all of the above |
| Answer» D. all of the above | |
| 354. |
The moisture content of the soil, after free drainage has removed most of the gravity water, is known as |
| A. | field capacity |
| B. | saturation capacity |
| C. | wilting co-efficient |
| D. | available moisture |
| Answer» A. field capacity | |
| 355. |
A solid construction put across the river to raise its water level and divert the water into the canal, is known as |
| A. | marginal bund |
| B. | weir |
| C. | barrage |
| D. | dam |
| Answer» B. weir | |
| 356. |
The most economical section of a lined canal is |
| A. | rectangular section with circular bottom for small discharges |
| B. | triangular section with circular bottom for small discharges |
| C. | trapezoidal section with rounded corners for higher discharges |
| D. | none of the above |
| E. | both (b) and (c) |
| Answer» E. both (b) and (c) | |
| 357. |
A side slope canal, cross-drainage works are completely eliminated. |
| A. | Agree |
| B. | Disagree |
| Answer» A. Agree | |
| 358. |
The hydrology helps in |
| A. | predicting maximum discharge |
| B. | deciding capacity of reservoir |
| C. | fore casting flood |
| D. | all of these |
| Answer» D. all of these | |
| 359. |
A weir is generally aligned at right angle to the direction of the main river flow because |
| A. | it is economical |
| B. | less length of weir is required |
| C. | it gives better discharge capacity |
| D. | all of these |
| Answer» D. all of these | |
| 360. |
A deflecting groyne in a river is |
| A. | inclined towards upstream |
| B. | perpendicular to bank |
| C. | inclined towards downstream |
| D. | none of these |
| Answer» B. perpendicular to bank | |
| 361. |
The method used for training of rivers is |
| A. | guide bank |
| B. | dyke or levee |
| C. | groyne |
| D. | all of these |
| Answer» D. all of these | |
| 362. |
In a barrage, crest level is kept |
| A. | low with large gates |
| B. | high with large gates |
| C. | high with small gates |
| D. | low with small gates |
| Answer» A. low with large gates | |
| 363. |
The process of loosing water from the leaves of plants, is termed as |
| A. | surface evaporation |
| B. | water surface evaporation |
| C. | transpiration |
| D. | precipitation |
| Answer» C. transpiration | |
| 364. |
A graph showing variations of discharge with time, at a particular point of a stream is known as |
| A. | mass inflow curve |
| B. | logistic curve |
| C. | hydrograph |
| D. | none of these |
| Answer» C. hydrograph | |
| 365. |
The average duty for sugar-cane in hectares/cumec is |
| A. | 200 |
| B. | 400 |
| C. | 600 |
| D. | 800 |
| Answer» D. 800 | |
| 366. |
When river flows in a plain country, its stage is known as |
| A. | delta |
| B. | boulder |
| C. | trough |
| D. | rocky |
| Answer» C. trough | |
| 367. |
In a syphon, the underside of the trough carrying drainage water is |
| A. | lower than |
| B. | higher than |
| C. | in level with |
| Answer» B. higher than | |
| 368. |
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» A. the air circulation is stopped in the root zone due to the rise in water table | |
| 369. |
The setting for a sub-proportional outlet is |
| A. | more |
| B. | less |
| C. | same |
| Answer» B. less | |
| 370. |
The maximum rainfall during a short period measured in mm / hour is called mean annual rainfall. |
| A. | Agree |
| B. | Disagree |
| Answer» B. Disagree | |
| 371. |
The time (in days) that crop takes from the instant of its sowing to that of its harvest, is known as |
| A. | base |
| B. | crop |
| C. | kor |
| Answer» B. crop | |
| 372. |
The perimeter discharge (P-Q) relation is given by the equation |
| A. | P = 2.25 Q1/2 |
| B. | P = 2.25 Q3/2 |
| C. | P = 4.75 Q1/2 |
| D. | P = 4.75 Q3/2 |
| Answer» C. P = 4.75 Q1/2 | |
| 373. |
Available moisture may be defined as the |
| A. | moisture content at permanent wilting point |
| B. | difference in water content of the soil between field capacity and permanent wilting |
| C. | maximum moisture holding capacity |
| D. | all of these |
| Answer» B. difference in water content of the soil between field capacity and permanent wilting | |
| 374. |
Which of the following statement is correct? |
| A. | The gravity water is harmful to the crops. |
| B. | The hygroscopic water remains attached to the soil molecules by chemical bonds. |
| C. | The capillary water is utilised by the plants. |
| D. | all of the above |
| Answer» C. The capillary water is utilised by the plants. | |
| 375. |
The fall of moisture from the atmosphere to the earth surface in any form, is called |
| A. | evaporation |
| B. | transpiration |
| C. | precipitation |
| D. | none of these |
| Answer» C. precipitation | |
| 376. |
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» C. hyetograph | |
| 377. |
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» B. root zone depth | |
| 378. |
In a canal section, which is in partial filling and partial cutting |
| A. | the full supply level of the canal is above the natural surface level |
| B. | the bed level of the canal is below the natural surface level |
| C. | the full supply level of the canal is below the natural surface level |
| D. | the bed level of the canal is above the natural surface level |
| E. | both (a) and (b) |
| Answer» E. both (a) and (b) | |
| 379. |
The free board in a channel is governed by the |
| A. | size of the canal |
| B. | location of the canal |
| C. | water surface fluctuations |
| D. | all of these |
| Answer» D. all of these | |
| 380. |
According to Khosla's theory, the exit gradient in the absence of a downstream cut-off is |
| A. | zero |
| B. | unity |
| C. | infinity |
| D. | none of these |
| Answer» C. infinity | |
| 381. |
Which of the following statement is wrong? |
| A. | The impermeable groynes do not permit any flow through them. |
| B. | The impermeable groynes may be constructed by a core of locally available material like sand, clay and gravel. |
| C. | The permeable groynes dampen the velocity and reduce the erosive action of the stream. |
| D. | none of the above |
| Answer» D. none of the above | |
| 382. |
Water logging takes place due to |
| A. | rise |
| B. | fall |
| Answer» A. rise | |
| 383. |
Outlet discharge for a particular crop is given by |
| A. | Area / Outlet factor |
| B. | Outlet factor / Area |
| C. | Area x Outlet factor |
| D. | none of these |
| Answer» A. Area / Outlet factor | |
| 384. |
Which of the following statements is wrong? |
| A. | Seepage drains reduce the chances of water logging. |
| B. | The water table generally follows the ground surface above it with a few exceptions. |
| C. | At the water table, the hydrostatic pressure is zero. |
| D. | Water logging makes the land more productive. |
| Answer» D. Water logging makes the land more productive. | |
| 385. |
A groyne |
| A. | contracts a river channel to improve its depth |
| B. | silts up the area in the vicinity by creating a slack flow |
| C. | trains the flow along a certain course |
| D. | all of the above |
| Answer» D. all of the above | |
| 386. |
An aggrading river is a |
| A. | scouring |
| B. | silting |
| Answer» B. silting | |
| 387. |
The consumptive use of water of a crop |
| A. | is measured as the volume of water per unit area |
| B. | is measured as depth of water on irrigated area |
| C. | may be supplied partly by precipitation and partly by irrigation |
| D. | all of the above |
| Answer» D. all of the above | |
| 388. |
A deflecting groyne has a much |
| A. | longer |
| B. | shorter |
| Answer» B. shorter | |
| 389. |
Which of the following method is useful for obtaining values of flood discharges for a high recurrence interval? |
| A. | California method |
| B. | Hazen's method |
| C. | Gumbel's method |
| D. | all of these |
| Answer» C. Gumbel's method | |
| 390. |
The first watering, when the crop has grown a few centimetres, is called paleo. |
| A. | Agree |
| B. | Disagree |
| Answer» B. Disagree | |
| 391. |
A river training work is generally required when the river is |
| A. | aggrading type |
| B. | degrading type |
| C. | meandering type |
| D. | stable type |
| Answer» C. meandering type | |
| 392. |
The narrow strip of land left at the ground level between the inner toe of the bank and top edge of the cutting, is known as |
| A. | free board |
| B. | dowel |
| C. | inspection roadway |
| D. | berm |
| Answer» D. berm | |
| 393. |
Run-off is measured in |
| A. | m3/s |
| B. | m3/min |
| C. | m3/h |
| D. | none of these |
| Answer» A. m3/s | |
| 394. |
Irrigation is said to be a science of survival. |
| A. | Correct |
| B. | Incorrect |
| Answer» A. Correct | |
| 395. |
According to Lacey |
| A. | the silt is kept in suspension due to the force of vertical eddies |
| B. | the eddies are generated from bed and sides, both normal to the surface of generation |
| C. | the vertical component of eddies generated from sides will also support the silt |
| D. | all of the above |
| Answer» D. all of the above | |
| 396. |
The height of dowel above the road level should not be more than |
| A. | 10 cm |
| B. | 20 cm |
| C. | 30 cm |
| D. | 40 cm |
| Answer» C. 30 cm | |
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