MCQOPTIONS
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MCQOPTIONS
This section includes 189 Mcqs, each offering curated multiple-choice questions to sharpen your Civil Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
If Δ is the depth of water in metres, is the number of days of base period and is the duty in hactare/cumec, the relationship which holds good, is |
| A. | none of these. |
| Answer» E. | |
| 2. |
Solution of Laplacian equation in three dimensions of water in a syphon, is done by |
| A. | analytical method |
| B. | Khosla's method |
| C. | method of relaxation |
| D. | Unwin's method. |
| Answer» D. Unwin's method. | |
| 3. |
If and are the water depth and drop in the bed level at a Sarda fall, the width of the trapezoidal crest, is given by |
| A. | B = 0.22 |
| B. | B = 0.33 |
| C. | B = 0.44 |
| D. | B = 0.55 |
| Answer» E. | |
| 4. |
If is the depth of water upstream of the throat above its sill, is the width of the throat, to achieve critical flow in an open venturi flume, the theoretical maximum flow , is |
| A. | = 1.71 |
| B. | = 1.71 |
| C. | = 1.71 |
| D. | = 1/71 |
| E. | none of these. |
| Answer» D. = 1/71 | |
| 5. |
While deciding the alignment of a proposed canal taking off from a river at , three alignments of approximately equal lengths are available. These cross a drainages at , and where drainage bed levels > > , you will provide at site |
| A. | an aqueduct |
| B. | a syphon aqueduct |
| C. | a super passage |
| D. | a syphon. |
| Answer» B. a syphon aqueduct | |
| 6. |
According to Lacey, depth of scour in a river depends upon the straightness of the reach. If is the depth of scour in regime flow in a right angled bend, it is |
| A. | 1.25 |
| B. | 1.50 |
| C. | 1.75 |
| D. | 2.00 |
| Answer» E. | |
| 7. |
If the straight sides of a triangular section of a lined canal with circular bottom of radius , make an angle θ with horizontal, the hydraulic mean depth is |
| A. | /2 |
| B. | /3 |
| C. | /4 |
| D. | /5 |
| Answer» C. /4 | |
| 8. |
The top soil of a water logged field becomes more alkaline and infertile if its p value is |
| A. | 6 |
| B. | 8 |
| C. | 9 |
| D. | 10 |
| E. | 11 |
| Answer» F. | |
| 9. |
For the conditions enumerated to provide a crossing at You will probably provide |
| A. | an aqueduct |
| B. | a super-passage |
| C. | a syphon aqueduct |
| D. | none of these. |
| Answer» C. a syphon aqueduct | |
| 10. |
If the straight sides of a triangular section of a lined canal with circular bottom of radius , make an angle θ with horizontal, the perimeter of the canal is |
| A. | R(θ + tan θ) |
| B. | 2R(θ + tan θ) |
| C. | R(θ + cos θ) |
| D. | 2R(θ + cos θ) |
| E. | none of these. |
| Answer» E. none of these. | |
| 11. |
If is total length of a canal in kilometres, is total perimeter of its lining in metres and is the cost of lining per square metre, the additional expenditure involved on lining, is |
| A. | 1000 |
| Answer» B. | |
| 12. |
For loss of head in a canal inverted syphon barrel, the factor in the Unwin formula is a coefficient for loss of head due to |
| A. | friction |
| B. | exit |
| C. | entry |
| D. | gradient |
| Answer» D. gradient | |
| 13. |
For a given discharge in a channel, Blench curves give the relationship between the loss of head () and |
| A. | specific energy up-stream |
| B. | specific energy down-stream |
| C. | critical depth of water down-stream |
| D. | depth of water down-stream |
| Answer» C. critical depth of water down-stream | |
| 14. |
With the increase in the quantity of water supplied, the yield of most crops_________________? |
| A. | increases continuously |
| B. | decreases continuously |
| C. | increases upto a certain limit and then becomes constant |
| D. | increases upto a certain limit and then decreases |
| Answer» E. | |
| 15. |
When the upstream face of a gravity dam is vertical, then the intensity of water pressure at the water surface and at the base respectively will be_______________? |
| A. | 0 and wH212 |
| B. | wH2/2and wH2/3 |
| C. | wH and 0 |
| D. | OandwII |
| Answer» E. | |
| 16. |
When the reservoir is full, the maximum compressive force in a gravity dam is produced______________? |
| A. | at the toe |
| B. | at the heel |
| C. | within the middle third of base |
| D. | at centre of base |
| Answer» B. at the heel | |
| 17. |
When surface of transpiration is submerged under water, then potential evapotranspiration is________________? |
| A. | much more than evapotranspiration |
| B. | much less than evapotranspiration |
| C. | equal to evapotranspiration |
| D. | equal to or less than evapotranspi-ration |
| Answer» B. much less than evapotranspiration | |
| 18. |
Wetted perimeter of a regime channel for a discharge of 64 cumecs as per Lacey’s theory will be_________? |
| A. | 19 m |
| B. | 38m |
| C. | 57m |
| D. | 76m |
| Answer» C. 57m | |
| 19. |
Vertical drop fall is satisfactory for a height upto ___________? |
| A. | 0.5 m |
| B. | 1.5 m |
| C. | 3.5 m |
| D. | 5.0 m |
| Answer» C. 3.5 m | |
| 20. |
Variability of rainfall is____________?_x005F_x000D_1) largest in regions of high rainfall_x005F_x000D_2) largest in coastal areas_x005F_x000D_3) largest in regions of scanty rainfall_x005F_x000D_The correct answer is? |
| A. | only (1) |
| B. | (1) and (2) |
| C. | only (3) |
| D. | (2) and (3) |
| Answer» D. (2) and (3) | |
| 21. |
Unit of runoff in M.K.S. system is________________? |
| A. | cubic metre/sec |
| B. | metre/sec |
| C. | cubic metre |
| D. | square metre |
| Answer» B. metre/sec | |
| 22. |
Trap efficiency of a reservoir is a function of_______________? |
| A. | capacity/inflow ratio |
| B. | capacity/outflow ratio |
| C. | outflow/inflow ratio |
| D. | none of the above |
| Answer» B. capacity/outflow ratio | |
| 23. |
Tortuosity of a meandering river is the ratio of__________________? |
| A. | meander belt to meander length |
| B. | meander length to meander belt |
| C. | curved length along the channel to the direct axial length of the river reach |
| D. | direct axial length of the river reach to curved length along the channel |
| Answer» D. direct axial length of the river reach to curved length along the channel | |
| 24. |
To determine the discharge at a section in a stream from its rating curve, the required data are_______________?_x005F_x000D_1) slope of water surface at the section_x005F_x000D_2) stage at the section_x005F_x000D_3) current meter readings at the section_x005F_x000D_The correct answer is? |
| A. | (1) and (2) |
| B. | (2) and (3) |
| C. | only (2) |
| D. | only (3) |
| Answer» D. only (3) | |
| 25. |
The water utilizable by plants is available in soils mainly in the form of________________? |
| A. | gravity water |
| B. | capillary water |
| C. | hydroscopic water |
| D. | chemical water |
| Answer» C. hydroscopic water | |
| 26. |
The water stored in the reservoir below the minimum pool level is called_______________? |
| A. | useful storage |
| B. | dead storage |
| C. | valley storage |
| D. | surcharge storage |
| Answer» C. valley storage | |
| 27. |
The value of Sodium Absorption Ratio for high sodium water lies between________________? |
| A. | 0 to 10 |
| B. | 10 to 18 |
| C. | 18 to 26 |
| D. | 26 to 34 |
| Answer» D. 26 to 34 | |
| 28. |
The useful storage is the volume of water stored in the reservoir between________________? |
| A. | minimum pool level and maximum pool level |
| B. | minimum pool level and normal pool level |
| C. | normal pool level and maximum pool level |
| D. | river bed and minimum pool level |
| Answer» C. normal pool level and maximum pool level | |
| 29. |
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 | |
| 30. |
The uplift pressure on a dam can be controlled by_________________?_x005F_x000D_1) constructing cutoff under upstream face_x005F_x000D_2) constructing drainage channels bet-ween the dam and its foundation_x005F_x000D_3) by pressure grouting in foundation_x005F_x000D_The corret answer is? |
| A. | only (1) |
| B. | both (1) and (2) |
| C. | both (1) and (3) |
| D. | (1), (2) and (3) |
| Answer» E. | |
| 31. |
The unit hydrograph of a specified duration can be used to evaluate the hydrograph of storms of_________________? |
| A. | same duration only |
| B. | same and shorter duration |
| C. | same and longer duration |
| D. | any duration |
| Answer» E. | |
| 32. |
The unit hydrograph due to a storm may be obtained by dividing the ordinates of the direct runoff hydrograph by_______________? |
| A. | direct runoff volume |
| B. | period of storm |
| C. | total rainfall |
| D. | none of the above |
| Answer» B. period of storm | |
| 33. |
The total capacity of a reservoir is 25 million cubic metres and dead storage is 5 million cubic metres. If the average volume of sediment deposition is 0.10 million cubic metre per year, then the usefulness of the reservoir will start reducing after_________________? |
| A. | 50 years |
| B. | 150 years |
| C. | 200 years |
| D. | 250 years |
| Answer» B. 150 years | |
| 34. |
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 | |
| 35. |
The stage of river carrying a discharge of Q m7sec at a point is 10 m and slope of water surface is (1/4000). The discharge of a flood at the same point and same stage of 10 m with a water surface slope of(l/1000) will be________________? |
| A. | V2 Q m3/sec |
| B. | 0.5 Q mVsec |
| C. | 2 Q m3/sec |
| D. | 4 Q m3/sec |
| Answer» D. 4 Q m3/sec | |
| 36. |
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 | |
| 37. |
The sensitivity of a rigid module is_______________? |
| A. | zero |
| B. | between zero and one |
| C. | 1 |
| D. | infinity |
| Answer» B. between zero and one | |
| 38. |
The runoff increases with________________? |
| A. | increase in intensity of rain |
| B. | increase in infiltration capacity |
| C. | increase in permeability of soil |
| D. | all of the above |
| Answer» B. increase in infiltration capacity | |
| 39. |
The relation between probability (P) and recurrence interval (T) is given by_________________? |
| A. | PT = 1 |
| B. | PT2 = 1 |
| C. | P/T = 1 |
| D. | P/T2 = 1 |
| Answer» B. PT2 = 1 | |
| 40. |
The ratio of the quantity of water stored in the root zone of the crops to the quantity of water actually delivered in the field is known as__________________? |
| A. | water conveyance efficiency |
| B. | water application efficiency |
| C. | water use efficiency |
| D. | none of the above |
| Answer» C. water use efficiency | |
| 41. |
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. | |
| 42. |
The ratio of rate of change of the discharge of an outlet to the rate of change of the discharge of distributing channel is called________________? |
| A. | proportionality |
| B. | flexibility |
| C. | setting |
| D. | sensitivity |
| Answer» C. setting | |
| 43. |
The ratio of average values of shear stresses produced on the bed and the banks of a channel due to flowing water is________________? |
| A. | less than 1 |
| B. | equal to 1 |
| C. | greater than 1 |
| D. | equal to zero |
| Answer» D. equal to zero | |
| 44. |
The rainfall on five successive days were measured as 100 mm, 80 mm, 60 mm, 40 mm and 20 mm respectively. If the infiltration index or the storm loss rate for the catchment area is earlier estimated as 50 mm/day, the total surface run off will be________________? |
| A. | 50 mm |
| B. | 60 mm |
| C. | 90 mm |
| D. | 140 mm |
| Answer» D. 140 mm | |
| 45. |
The peak of a 4 hour flood hydrograph is 240 m3/sec . If the rainfall excess is 80 mm and base flow which is constant is 40 m3/sec, then the peak of 4-hours unit hydrograph will be__________________? |
| A. | 20 3/sec |
| B. | 25 m3/sec |
| C. | 30 m3/sec |
| D. | 35 m3/sec |
| Answer» C. 30 m3/sec | |
| 46. |
The “outlet discharge factor” is the duty at the head of_________________? |
| A. | main canal |
| B. | branch canal |
| C. | watercourse |
| D. | distributory |
| Answer» D. distributory | |
| 47. |
The normal annual precipitation at stations X, A, B and C are 700 mm, 1000 mm, 900 mm and 800 mm respectively. If the storm precipitation at three station A, B and C were 100 mm, 90 mm and 80 mm respectively, then the storm precipitation for station X will be___________________? |
| A. | 70mm |
| B. | 80mm |
| C. | 90 mm |
| D. | 105 mm |
| Answer» B. 80mm | |
| 48. |
The net speed under which the turbine reaches its peak efficiency is called_________________? |
| A. | design speed |
| B. | rated speed |
| C. | gross speed |
| D. | operating speed |
| Answer» B. rated speed | |
| 49. |
The net head under which the turbine reaches its peak efficiency at synchronous speed is called________________? |
| A. | design head |
| B. | rated head |
| C. | gross head |
| D. | operating head |
| Answer» B. rated head | |
| 50. |
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. | |