MCQOPTIONS
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MCQOPTIONS
This section includes 243 Mcqs, each offering curated multiple-choice questions to sharpen your Civil Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 201. |
Knowledge of hydrology is necessary for civil engineers for |
| A. | Designing and construction of irrigation structures |
| B. | Designing and construction of bridges and culverts |
| C. | Flood control works |
| D. | All the above |
| Answer» E. | |
| 202. |
If there are two canals taking off from each flank of a river, then there will be |
| A. | One divides wall and one under-sluice |
| B. | One divides wall and two under-sluices |
| C. | Two divide walls and one under-sluice |
| D. | Two divide walls and two under-sluices |
| Answer» E. | |
| 203. |
Phytometer method is generally used for the measurement of |
| A. | Interception |
| B. | Evaporation |
| C. | Transpiration |
| D. | None of these |
| Answer» D. None of these | |
| 204. |
The most suitable material for the central impervious core of a zoned embankment type dam is |
| A. | Clay |
| B. | Coarse sand |
| C. | Silty clay |
| D. | Clay mixed with fine sand |
| Answer» E. | |
| 205. |
The uplift pressure on a dam can be controlled by (i) Constructing cut-off under upstream face (ii) Constructing drainage channels between the dam and its foundation (iii) By pressure grouting in foundation The correct answer is |
| A. | Only (i) |
| B. | Both (i) and (ii) |
| C. | Both (i) and (iii) |
| D. | (i), (ii) and (iii) |
| Answer» E. | |
| 206. |
Non-recording rain gauges |
| A. | Collect the rain whose volume is measured by means of graduated cylinders |
| B. | Collect the rain which is directly measured by means of graduated cylinders in centimetres of water depth |
| C. | Are generally used in hilly terrain |
| D. | Are cylindrical in shape |
| Answer» C. Are generally used in hilly terrain | |
| 207. |
The stream which does not have any base flow contribution is called |
| A. | Perennial stream |
| B. | Intermittent stream |
| C. | Ephemeral stream |
| D. | None of the above |
| Answer» D. None of the above | |
| 208. |
The maximum average depth due to one day storm over an area of 100 km² is 100 mm. DepthArea-Duration (DAD) curves indicate the same area of 100 km² the maximum average depth for a 3 hour storm will be |
| A. | 100 mm |
| B. | More than 100 mm |
| C. | Less than 100 mm |
| D. | None of the above |
| Answer» C. Less than 100 mm | |
| 209. |
From the Survey of India map, the distance of the critical point is 20 km and difference in elevation is 193 m. The over land flow time, is |
| A. | 2 hours |
| B. | 3 hours |
| C. | 2 hours and 30 minutes |
| D. | 4 hours |
| Answer» E. | |
| 210. |
A river training work is generally required when the river is |
| A. | Aggrading type |
| B. | Degrading type |
| C. | Meandering type |
| D. | Both (A) and (B) |
| Answer» D. Both (A) and (B) | |
| 211. |
If a gauge is installed perpendicular to the slope, its measurement is reduced by multiplying |
| A. | Sine of the angle of inclination with vertical |
| B. | Cosine of the angle of inclination with vertical |
| C. | Tangent of the angle of inclination with vertical |
| D. | Calibration coefficient of the gauge |
| Answer» C. Tangent of the angle of inclination with vertical | |
| 212. |
The aqueduct or super-passage type of works are generally used when |
| A. | High flood drainage discharge is small |
| B. | High flood drainage discharge is large and short lived |
| C. | High flood drainage discharge is large and continues for a long time |
| D. | None of the above |
| Answer» B. High flood drainage discharge is large and short lived | |
| 213. |
For a proportional outlet, the flexibility is |
| A. | Zero |
| B. | Between zero and 1 |
| C. | 1 |
| D. | Greater than 1 |
| Answer» D. Greater than 1 | |
| 214. |
Silt excluders are constructed on the |
| A. | River bed upstream of head regulator |
| B. | River bed downstream of head regulator |
| C. | Canal bed upstream of head regulator |
| D. | Canal bed downstream of head regulator |
| Answer» B. River bed downstream of head regulator | |
| 215. |
In case of non-availability of space due to topography, the most suitable spillway is |
| A. | Straight drop spillway |
| B. | Shaft spillway |
| C. | Chute spillway |
| D. | Ogee spillway |
| Answer» C. Chute spillway | |
| 216. |
The radius of influence is |
| A. | Radius of the main well |
| B. | Distance from the wall of main well to the point of zero draw down |
| C. | Distance from the centre of main well to the point of zero draw down |
| D. | None of these |
| Answer» D. None of these | |
| 217. |
As compared to gravity dams, earthen dams |
| A. | Are costlier |
| B. | Are less susceptible to failure |
| C. | Require sound rock foundations |
| D. | Require less skilled labour |
| Answer» E. | |
| 218. |
The uplift pressure on the face of a drainage gallery in a dam is taken as |
| A. | Hydrostatic pressure at toe |
| B. | Average of hydrostatic pressure at toe and heel |
| C. | Two-third of hydrostatic pressure at toe plus one-third of hydrostatic pressure at heel |
| D. | None of the above |
| Answer» D. None of the above | |
| 219. |
A control meter is preferred to a weir because |
| A. | It measures the discharge even in silt Leiden streams |
| B. | The velocity of approach of the channel increases above the control, and thus removes the silt completely |
| C. | It is not damaged by floating debris |
| D. | All the above |
| Answer» E. | |
| 220. |
The specifications of most commonly used standard gauges in India, are |
| A. | 200 sq. cm collector and 4 litres bottle |
| B. | 100 sq. cm collector and 2 litres bottle |
| C. | 200 sq. cm collector and 10 litres bottle |
| D. | 100 sq. cm collector and 4 litres bottle |
| Answer» B. 100 sq. cm collector and 2 litres bottle | |
| 221. |
For a catchment area of 120 km², the equilibrium discharge in m3/hour of a Scurve obtained by the summation of 6 hour unit hydro graph is |
| A. | 0.2 × 106 |
| B. | 0.6 × 106 |
| C. | 2.4 × 106 |
| D. | 7.2 × 106 |
| Answer» B. 0.6 × 106 | |
| 222. |
If the dew point is greater than 0°C |
| A. | Dew will be formed |
| B. | Frost will be formed |
| C. | Vapours will be formed |
| D. | None of these |
| Answer» B. Frost will be formed | |
| 223. |
Which of the following methods is used to estimate flood discharge based on high water marks left over in the past? |
| A. | Slope-area method |
| B. | Area-velocity method |
| C. | Moving boat method |
| D. | Ultrasonic method |
| Answer» B. Area-velocity method | |
| 224. |
A hyetograph is a graphical representation of |
| A. | Rainfall intensity and time |
| B. | Rainfall depth and time |
| C. | Discharge and time |
| D. | Cumulative rainfall and time |
| Answer» B. Rainfall depth and time | |
| 225. |
Boston society of Civil Engineer's formula Q = 0.0056 × (D/t) in cumecs/square km is based upon |
| A. | Rainfall and drainage area |
| B. | Total run off and drainage area |
| C. | Drainage area and its shape |
| D. | Drainage area |
| Answer» C. Drainage area and its shape | |
| 226. |
A land is known as waterlogged |
| A. | When the permanent wilting point is reached |
| B. | When gravity drainage has ceased |
| C. | Capillary fringe reaches the root zone of plants |
| D. | None of the above |
| Answer» D. None of the above | |
| 227. |
River training for depth is achieved by |
| A. | Groynes |
| B. | Construction of dykes or leaves |
| C. | Both (A) and (B) |
| D. | Groynes and bandalling |
| Answer» E. | |
| 228. |
The drainage water intercepting the canal can be disposed of by passing the canal below the drainage in |
| A. | Aqueduct and syphon aqueduct |
| B. | Aqueduct and super passage |
| C. | Super passage and canal syphon |
| D. | Level crossing |
| Answer» D. Level crossing | |
| 229. |
The time required by rain water to reach the outlet of drainage basin, is generally called |
| A. | Time of concentration |
| B. | Time of overland flow |
| C. | Concentration time of overland flow |
| D. | Duration of the rainfall |
| Answer» B. Time of overland flow | |
| 230. |
Isohyets are the imaginary lines joining the points of equal |
| A. | Pressure |
| B. | Height |
| C. | Humidity |
| D. | Rainfall |
| Answer» E. | |
| 231. |
A divide wall is provided |
| A. | At right angle to the axis of weir |
| B. | Parallel to the axis of weir and upstream of it |
| C. | Parallel to the axis of weir and downstream of it |
| D. | At an inclination to the axis of weir |
| Answer» B. Parallel to the axis of weir and upstream of it | |
| 232. |
Main purpose of mean water training for rivers is |
| A. | Flood control |
| B. | To provide sufficient depth of water in navigable channels, during low water periods |
| C. | To preserve the channel in good shape by efficient disposal of suspended and bed load |
| D. | All of the above |
| Answer» D. All of the above | |
| 233. |
The flow-mass curve is graphical representation of |
| A. | Cumulative discharge and time |
| B. | Discharge and percentage probability of flow being equalled or exceeded |
| C. | Cumulative discharge, volume and time in chronological order |
| D. | Discharge and time in chronological order |
| Answer» D. Discharge and time in chronological order | |
| 234. |
In India, which of the following is adopted as standard recording rain-gauge? |
| A. | symon s rain - gauge |
| B. | Tipping bucket type |
| C. | Natural syphon type |
| D. | Weighing bucket type |
| Answer» D. Weighing bucket type | |
| 235. |
Select the incorrect statement. |
| A. | Intensive irrigation should be avoided in areas susceptible to water logging |
| B. | Extensive irrigation should be adopted in areas susceptible to water logging |
| C. | Lift irrigation increases water logging |
| D. | All of the above |
| Answer» D. All of the above | |
| 236. |
The flow of water after spilling over the weir crest in chute spillway and side channel spillway respectively are |
| A. | At right angle and parallel to weir crest |
| B. | Parallel and at right angle to weir crest |
| C. | Parallel to weir crest in both |
| D. | At right angle to weir crest in both |
| Answer» B. Parallel and at right angle to weir crest | |
| 237. |
If the critical shear stress of a channel is XC, then the average value of shear stress required to move the grain on the bank is |
| A. | 0.5 XC |
| B. | 0.75 TC |
| C. | XC |
| D. | 1.33 TC |
| Answer» C. XC | |
| 238. |
The shape of recession limb of a hydrograph depends upon |
| A. | Basin characteristics only |
| B. | Storm characteristics only |
| C. | Both (A) and (B) |
| D. | None of the above |
| Answer» B. Storm characteristics only | |
| 239. |
The most suitable chemical which can be applied to the water surface for reducing evaporation is |
| A. | Methyl alcohol |
| B. | Ethyl alcohol |
| C. | Cetyl alcohol |
| D. | Butyl alcohol |
| Answer» D. Butyl alcohol | |
| 240. |
The ratio of the average load to the installed capacity of the plant whose reserve capacity is zero will be equal to |
| A. | Load factor |
| B. | Plant factor |
| C. | Utilisation factor |
| D. | Both (A) and (B) |
| Answer» E. | |
| 241. |
The meander pattern of a river is developed by |
| A. | Average discharge |
| B. | Dominant discharge |
| C. | Maximum discharge |
| D. | Critical discharge |
| Answer» C. Maximum discharge | |
| 242. |
A straight glacis type fall with a baffle platform and a baffle wall is called |
| A. | Vertical drop-fall |
| B. | Glacis fall |
| C. | Montague type fall |
| D. | Inglis fall |
| Answer» E. | |
| 243. |
Generally the weir is aligned at right angles to the direction of the main river current because |
| A. | It ensures less length of the weir |
| B. | It gives better discharging capacity |
| C. | It is economical |
| D. | All of the above |
| Answer» E. | |