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MCQOPTIONS
This section includes 147 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. |
With the usual meanings ofletters, the equation is used for determining the velocity of ground water flow in metres per day. It is known as |
| A. | Meinzer's formula |
| B. | Slichter's formula |
| C. | Darcy's formula |
| D. | Hazen's formula. |
| Answer» C. Darcy's formula | |
| 2. |
In the derivation of Thiem's formula , the following assumption is not applicable |
| A. | The aquifer is homogeneous and isotropic |
| B. | Flow lines are radial and horizontal |
| C. | The slope of the water surface is too small |
| D. | The well has been sunk up to the surface of the unconfined aquifer |
| E. | None of these. |
| Answer» E. None of these. | |
| 3. |
If the area of storm hydrograph is equal to 10 cm, the ordinates of a unit hydrograph may be obtained by dividing the ordinates of the storm hydrograph by |
| A. | 0.5 |
| B. | 1 |
| C. | 2 |
| D. | 3 |
| E. | 4 |
| Answer» F. | |
| 4. |
For calculating the evaporation rate over a reservoir surface = 0.771 (1.465 - 0.00732 ) (0.44 - 0.007375 ) ( - ), the equation is given by |
| A. | Roohwer's, formula in M.K.S. |
| B. | Roohwer's formula in F.P.S. |
| C. | Dalton's formula in F.P.S. |
| D. | Dalton's formula in M.K.S. |
| Answer» B. Roohwer's formula in F.P.S. | |
| 5. |
Burge formula cumecs is based upon |
| A. | rainfall and drainage area |
| B. | run off and drainage area |
| C. | drainage area and its shape |
| D. | drainage area. |
| Answer» D. drainage area. | |
| 6. |
The respective storm totals at three surrounding stations , and are 110, 90 and 70 mm. If the normal annual precipitation amounts at stations , , and are respectively 1000, 1100, 1200 and 1250 mm, the estimated storm precipitation at is |
| A. | 75 mm |
| B. | 77 mm |
| C. | 79 mm |
| D. | 81 mm. |
| Answer» C. 79 mm | |
| 7. |
The area enclosed by the adjacent isohyets of a catchment basin are shown under : The average depth of annual precipitation in the catchment basin will be |
| A. | 60.0 cm |
| B. | 60.5 cm |
| C. | 61.5 cm |
| D. | 62.5 cm |
| E. | 63.5 cm. |
| Answer» F. | |
| 8. |
The elevation of the watershed is : (where letters carry their usual meanings) |
| A. | reduced level of the top most point of the basin |
| B. | reduced level of the lower most point of the basin |
| C. | average elevation of the highest and lowest point of the drainage basin |
| D. | obtained by the formula |
| Answer» E. | |
| 9. |
If the slope of a line for infiltration capacity curve is , the value of constant in Horton's equation of infiltration capacity curve, is |
| A. | 2.0 |
| B. | 2.5 |
| C. | 3.0 |
| D. | 3.5 |
| E. | 4.0. |
| Answer» F. | |
| 10. |
The equation - = φ for determining the infiltration capacity, was suggested by |
| A. | Horton |
| B. | Horner |
| C. | Llyod |
| D. | Bernard. |
| Answer» B. Horner | |
| 11. |
For high flood estimates the average value of the constant in Dicken's formula = , is |
| A. | 6.5 |
| B. | 8.5 |
| C. | 9.5 |
| D. | 10.5 |
| E. | 11.5 |
| Answer» F. | |
| 12. |
Pettis formula = (.) cumecs, is based upon |
| A. | rainfall and drainage area |
| B. | run off and drainage area |
| C. | drainage area and its shape |
| D. | drainage area. |
| Answer» B. run off and drainage area | |
| 13. |
Boston society of Civil Engineer's formula 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 | |
| 14. |
The equation which is used for determining the velocity of ground water flow in metres per day is known as |
| A. | Meinzer's formula |
| B. | Slichter's formula |
| C. | Darcy's formula |
| D. | Hazen formula. |
| Answer» E. | |
| 15. |
If total run off of a basin of 50 hectares is 0.8 cm, the ordinate of Bernard's distribution graph, may be calculated by the formula (where is the discharge in cumecs at the given time) |
| A. | = 50 |
| B. | = 100 |
| C. | = 150 |
| D. | = 200 |
| E. | = 250 |
| Answer» F. | |
| 16. |
The rate of rainfall for successive 10 minute periods of a 60 minute duration storm, are shown in the below figure. If the value of φ is 3 cm/hour, the run off will be |
| A. | 2 cm |
| B. | 3 cm |
| C. | 4 cm |
| D. | 5 cm. |
| Answer» C. 4 cm | |
| 17. |
From the pattern of the rainfall shown in the below figure, the total precipitation is |
| A. | 4 cm |
| B. | 4.5 cm |
| C. | 5 cm |
| D. | 5.5 cm |
| E. | 6 cm. |
| Answer» E. 6 cm. | |
| 18. |
From the data of the rain storm shown in the below figure, the value of is |
| A. | 1.5 cm/hour |
| B. | 2 cm/hour |
| C. | 2.5 cm/hour |
| D. | 2 cm/hour. |
| Answer» D. 2 cm/hour. | |
| 19. |
The earthen embankments constructed parallel to the river banks at some suitable distance for flood control, are known as |
| A. | floods walls |
| B. | river walls |
| C. | levees |
| D. | dikes |
| E. | both (c) and (d). |
| Answer» F. | |
| 20. |
Pettis formula Q = C (P.B)5/4 cumecs, is based upon |
| A. | rainfall and drainage area |
| B. | run off and drainage area |
| C. | drainage area and its shape |
| D. | drainage area. |
| Answer» B. run off and drainage area | |
| 21. |
For predicting floods of a given frequency, the best reliable method is |
| A. | Unit hydrograph method |
| B. | Gumbel's analytical method |
| C. | California method |
| D. | None of these. |
| Answer» B. Gumbel's analytical method | |
| 22. |
Boston society of Civil Engineer's formula 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 | |
| 23. |
For high flood estimates the average value of the constant C in Dicken's formula Q = CA3/4, is |
| A. | 6.5 |
| B. | 8.5 |
| C. | 9.5 |
| D. | 10.5 |
| E. | 11.5 |
| Answer» F. | |
| 24. |
If ω is unit weight of water, Q the discharge in cumecs, H the total head lift and η, the efficiency of the pump, the H.P. of the motor is |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» B. [B]. | |
| 25. |
According to Thiem, the permeability of an aquifer may be obtained from the equation |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| E. | all the above. |
| Answer» F. | |
| 26. |
While determining the yield of a gravity well by pumping, the depth of water table in two tests wells at distances r1 and r2 from the centre of the main well were found to be s1 and s2 respectively. Assuming the coefficient of transmissibility of the soil as T, the discharge Q may be given by |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» D. [D]. | |
| 27. |
If s is the potential infiltration, P is rainfall in cm in a drainage of a soil with fair pasture cover, the direct run off Q in cm is given by |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» D. [D]. | |
| 28. |
The formula for calculating the overland flow time (To) in hours for any basin, is (where Lo is the distance of the critical point and H is the difference in elevation) |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» E. | |
| 29. |
Izzard formula for the time of concentration in minutes for the plots having no channels, is (where Lo is the length of overland flow in metres and Kp rainfall intensity in cm/hour) |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» B. [B]. | |
| 30. |
The rate of rainfall for successive 10 minute periods of a 60 minute duration storm, are shown in the below figure. If the value of φindex is 3 cm/hour, the run off will be |
| A. | 2 cm |
| B. | 3 cm |
| C. | 4 cm |
| D. | 5 cm. |
| Answer» C. 4 cm | |
| 31. |
The rational formula for calculating the discharge, is (where A is the area of basin and Po is one hour rainfall) |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» D. [D]. | |
| 32. |
If P and A are the perimeter and area of a drainage basin, its compactness coefficient, is |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» D. [D]. | |
| 33. |
The form factor of a drainage basin is obtained by dividing |
| A. | area of the basin by the axial length |
| B. | average width of the basin by the axial basin |
| C. | area of the basin by the square of the axial length |
| D. | both (a) an (b) |
| E. | both (b) and (c). |
| Answer» F. | |
| 34. |
A river is said to be of uniform section if in its section |
| A. | a segment of a circle can be fitted |
| B. | a parabolic section can be fitted |
| C. | a rectangular section can be fitted |
| D. | a trapezoidal section can be fitted |
| E. | all the above. |
| Answer» F. | |
| 35. |
A control meter is preferred to a weir because |
| A. | it measures the discharge even in silt laiden 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. | |
| 36. |
For efficient working of a control meter, its throat length is approximately kept |
| A. | equal to the critical depth |
| B. | twice the critical depth |
| C. | three times the critical depth |
| D. | four times the critical depth. |
| Answer» D. four times the critical depth. | |
| 37. |
The rainfall cycle period in India is taken as |
| A. | 15 years |
| B. | 20 years |
| C. | 25 years |
| D. | 30 years |
| E. | 35 years. |
| Answer» F. | |
| 38. |
Symon's rain gauge is |
| A. | tipping-bucket gauge |
| B. | weighing type gauge |
| C. | float recording gauge |
| D. | non-recording gauge. |
| Answer» E. | |
| 39. |
The polythene bottles are used for collecting rain water and. their capacities is |
| A. | 2 litres |
| B. | 4 litres |
| C. | 10 litres |
| D. | all the above. |
| Answer» E. | |
| 40. |
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. | neither of these. |
| Answer» B. frost will be formed | |
| 41. |
The equation P - Q = Te φindex for determining the infiltration capacity, was suggested by |
| A. | Horton |
| B. | Horner |
| C. | Llyod |
| D. | Bernard. |
| Answer» B. Horner | |
| 42. |
The time required by rain water to reach the outlet of drainage basin, is generally called |
| A. | |
| B. | time of concentration |
| C. | time of overland flow |
| Answer» B. time of concentration | |
| 43. |
In the estimate of design flood, Dickens assumes that high flood in cumecs, is proportional to catchment area raised to the power |
| A. | evaporation |
| B. | transpiration |
| C. | none of these. |
| Answer» D. | |
| 44. |
Run off includes |
| A. | Run off is expressed as total volume per day |
| B. | None of these. |
| C. | precipitation over catchment area of the stream and its attributaries |
| D. | surface run off |
| Answer» E. | |
| 45. |
In India the recording type rain gauge generally used, is |
| A. | weighing type |
| B. | tipping type |
| C. | float recording type |
| D. | none of these. |
| Answer» D. none of these. | |
| 46. |
Precipitation caused due to striking of air masses with a topographical feature, is called |
| A. | orographic precipitation |
| B. | convective precipitation |
| C. | cyclonic precipitation |
| D. | none of these. |
| Answer» B. convective precipitation | |
| 47. |
Shrouding is provided in |
| A. | 1.485 m2/minute |
| B. | 1.585 m2/minute. |
| C. | cavity type tube wells |
| D. | slotted type tube wells |
| Answer» C. cavity type tube wells | |
| 48. |
If the area of storm hydrograph is equal to 102 cm, the ordinates of a unit hydrograph may be obtained by dividing the ordinates of the storm hydrograph by |
| A. | 4 hours. |
| B. | 0.5 |
| C. | 1 |
| D. | 2 |
| Answer» E. | |
| 49. |
The area enclosed by the adjacent isohyets of a catchment basin are shown under : The average depth of annual precipitation in the catchment basin will be |
| A. | 81 mm. |
| B. | 60.0 cm |
| C. | 60.5 cm |
| D. | 61.5 cm |
| Answer» E. | |
| 50. |
The rate of evaporation from reservoirs may be determined by |
| A. | 1.0 m. |
| B. | pan-measurement method |
| C. | empirical formulae |
| D. | storage equation method |
| Answer» E. | |