MCQOPTIONS
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MCQOPTIONS
This section includes 146 Mcqs, each offering curated multiple-choice questions to sharpen your Surveying knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
One ha - cm water equals to- |
| A. | 1,000 litres |
| B. | 10,00,000 litres |
| C. | 1,00,000 litres |
| D. | 100 litres |
| Answer» D. 100 litres | |
| 2. |
A counter berm is |
| A. | a horizontal benching provided on the inside slope |
| B. | a horizontal benching provided on the outside slope |
| C. | a vertical benching provided on the outer edge of the bank |
| D. | a vertical benching provided on the inner edge of the bank. |
| Answer» C. a vertical benching provided on the outer edge of the bank | |
| 3. |
The water face of the guide banks, is protected by |
| A. | one men stone pitching |
| B. | two man stone pitching |
| C. | three man stone pitching |
| D. | four man stone pitching |
| Answer» B. two man stone pitching | |
| 4. |
Finally formed berms in canals are provided for |
| A. | protection of banks erosion by the waves |
| B. | control of seepage losses |
| C. | strengthening of banks |
| D. | all the above. |
| Answer» E. | |
| 5. |
Lacey's equation for calculating flood discharge in rivers, is |
| A. | V = 10.8 R^1/2 S^1/2 |
| B. | V = 10.8 R^2/3 S^1/2 |
| C. | V = 10.8 R^2/3 S^1/3 |
| D. | V = 10.8 R^1/3 S^2/3 |
| Answer» D. V = 10.8 R^1/3 S^2/3 | |
| 6. |
The main cause of silting up a channel, |
| A. | non-regime section |
| B. | inadequate slope |
| C. | defective head regulator |
| D. | all the above. |
| Answer» E. | |
| 7. |
The width of a dowla is generally kept between 30 to 60 cm and its height above the road level should invariably be more than |
| A. | 10 cm |
| B. | 20 cm |
| C. | 30 cm |
| D. | 40 cm |
| Answer» D. 40 cm | |
| 8. |
For cereal crops the most commonly adopted method of irrigation, is |
| A. | free flowing method |
| B. | check method |
| C. | furrow method |
| D. | sprinkling method. |
| Answer» C. furrow method | |
| 9. |
A fall which maintains its depth, is |
| A. | a trapezoidal notch fall |
| B. | a low weir fall |
| C. | a rectangular notch fall |
| D. | all the above. |
| Answer» E. | |
| 10. |
When a canal is carried over a natural drainage, the structure provided, is known as |
| A. | syphon |
| B. | aqueduct |
| C. | super passage |
| D. | syphon-aqueduct. |
| Answer» C. super passage | |
| 11. |
The most suitable location of a canal head work, is |
| A. | boulders stage of the river |
| B. | delta stage of the river |
| C. | rock stage of the river |
| D. | trough stage of the river. |
| Answer» E. | |
| 12. |
The field capacity of a soil depends upon |
| A. | capillary tension in soil |
| B. | porosity of soil |
| C. | both (a) and (b) |
| D. | neither (a) nor (b). |
| Answer» D. neither (a) nor (b). | |
| 13. |
The level of the fioor of a syphon aqueduct can be obtained |
| A. | by subtracting the depth of the culvert from the canal bed level |
| B. | by subtracting the thickness of culvert plus the depth of the culvert from the canal bed level |
| C. | both (a) and (b) |
| D. | none of these. |
| Answer» C. both (a) and (b) | |
| 14. |
The uplift pressure on the roof of an inverted syphon, is maximum when |
| A. | drain in running dry |
| B. | canal is running dry |
| C. | canal is running with F.S.L. |
| D. | drain is running with H.F.L. |
| Answer» E. | |
| 15. |
According to Lacey, in regime conditions |
| A. | silt is kept in suspension by vertical components of eddies |
| B. | entire cross-section of the channel is generated at all points by the forces normal to the wetted perimeter |
| C. | both (a) and (b) |
| D. | neither (a) nor (b). |
| Answer» D. neither (a) nor (b). | |
| 16. |
The ratio of the rate of change of discharge of an outlet to the rate of change in level of water surface in a distributary at its normal depth, is known as |
| A. | efficiency |
| B. | sensitivity |
| C. | flexibility |
| D. | modular limit. |
| Answer» C. flexibility | |
| 17. |
Canals constructed for draining off water from water logged areas, are known |
| A. | drains |
| B. | inundation canals |
| C. | valley canals |
| D. | contour canals |
| Answer» B. inundation canals | |
| 18. |
In a Sarda type fall, the rectangular crest, may be used for discharge upto |
| A. | 6 cumecs |
| B. | 10 cumecs |
| C. | 14 cumecs |
| D. | 20 cumecs |
| Answer» D. 20 cumecs | |
| 19. |
Lacy's regime condition is obtained if |
| A. | silt grade in the channel is variable |
| B. | discharge in the channel is variable |
| C. | silt charge in the channel is variable |
| D. | channel flows in unlimited, incoherent alluvium of the same character as that transported material. |
| Answer» E. | |
| 20. |
For standing crops in undulating sandy fields, the best method of irrigation, is |
| A. | sprinkler irrigation |
| B. | free flooding |
| C. | check method |
| D. | furrow method |
| Answer» B. free flooding | |
| 21. |
If the irrigation efficiency is 80%, conveyance losses are 20% and the actual depth of watering is 16 cm, the depth of water required at the canal outlet, is |
| A. | 10 cm |
| B. | 15 cm |
| C. | 20 cm |
| D. | 25 cm |
| Answer» E. | |
| 22. |
A hydraulic structure is designed to withstand |
| A. | seepage forces |
| B. | hydraulic jump |
| C. | hydraulic pressure |
| D. | all the above. |
| Answer» E. | |
| 23. |
In gravity canals, F.S.L. is |
| A. | always at the ground level |
| B. | always below the ground level |
| C. | generally 4 to 5 metres above the ground level |
| D. | only a few cm above the ground level. |
| Answer» E. | |
| 24. |
A current meter measures the velocity of flow, if it is held |
| A. | on the surface of water |
| B. | at the bottom of channel |
| C. | at any point within the cross-section |
| D. | none of these. |
| Answer» D. none of these. | |
| 25. |
For diversion of flood water of rivers, the type of canal constructed, is |
| A. | ridge canal |
| B. | perennial canal |
| C. | inundation canal |
| D. | canal. |
| Answer» D. canal. | |
| 26. |
If L is total length of a canal in kilometres, P is total perimeter of its lining in metres and C is the cost of lining per square metre, the additional expenditure involved on lining, is |
| A. | 1000 PLC |
| B. | PLC/1000 |
| C. | PL/1000C |
| D. | PC/100L |
| Answer» B. PLC/1000 | |
| 27. |
If straight sides of a triangular section of a lined canal with circular bottom of radius R, make an angle θ with horizontal, the area of its cross-section, is |
| A. | R(θ + tan θ) |
| B. | R(θ + cot θ) |
| C. | R2(θ + tan θ) |
| D. | R2(θ + cot θ) |
| Answer» E. | |
| 28. |
A deficit of sediments in flowing water may cause a river |
| A. | meandering type |
| B. | aggrading type |
| C. | degrading type |
| D. | sub-critical type. |
| Answer» D. sub-critical type. | |
| 29. |
Meandering of a river generally occurs, in |
| A. | rocky stage |
| B. | delta stage |
| C. | boulder stage |
| D. | trough stage. |
| Answer» E. | |
| 30. |
The ratio of the discharge over a trapezoidal crest to a rectangular crest of Sarda falls of identical parameters, is |
| A. | 1.084 |
| B. | 1.074 |
| C. | 1.064 |
| D. | 1.054 |
| Answer» B. 1.074 | |
| 31. |
The most suitable section of a lined canal, is |
| A. | triangular section with circular bottom for small canals |
| B. | trapezoidal section with rounded corners for large canals |
| C. | rectangular section with rounded corners for large canals |
| D. | both (a) and (b) |
| Answer» E. | |
| 32. |
The field capacity of a soil is 25%, its permanent wilting point is 15% and specific dry unity weight is 1.5. If the depth of root zone of a crop, is 80 cm, the storage capacity of the soil, is |
| A. | 8 cm |
| B. | 10 cm |
| C. | 12 cm |
| D. | 14 cm |
| Answer» D. 14 cm | |
| 33. |
The useful moisture of soil, is equal to its |
| A. | field capacity |
| B. | saturation capacity |
| C. | moisture content at permanent wilting point |
| D. | difference between filed capacity and permanent wilting point within the root zone of plants. |
| Answer» E. | |
| 34. |
To control the silt entry into a distributary at head regulator, King's vanes are provided which are the walls |
| A. | of R.C.C. or steel plate 8 cm thick |
| B. | of height l/3rd to l/4th the depth of water in the main canal |
| C. | spaced at interval of 1.5 times their heights |
| D. | all the above. |
| Answer» E. | |
| 35. |
An outlet which maintains a constant discharge irrespective of fluctuation in the water levels of the supplying channel or water course, is known as |
| A. | non-modular outlet |
| B. | semi-modular outlet |
| C. | flexible modular outlet |
| D. | right modular outlet. |
| Answer» E. | |
| 36. |
In a canal syphon, the flow is |
| A. | under atmospheric pressure |
| B. | pipe flow |
| C. | with critical velocity |
| D. | under negative pressure. |
| Answer» C. with critical velocity | |
| 37. |
In a syphon aqueduct |
| A. | drainage passes over the canal and F.S.L. of the canal is below the bottom of the drainage trough |
| B. | drainage passes over the canal and F.S.L. of the canal is above the bottom of the drainage trough |
| C. | canal passes over the drainage and H.F.L. of the drainage is above the bottom of the canal trough |
| D. | canal passes over the drainage and H.F.L. of the drainage is below the bottom of the canal trough. |
| Answer» D. canal passes over the drainage and H.F.L. of the drainage is below the bottom of the canal trough. | |
| 38. |
According to G.W. Pickles the effect of confining the flood water of a river between levee, is to increase |
| A. | rate of flood wave |
| B. | water surface elevation during floods |
| C. | maximum discharge |
| D. | surface slope of streams above the leveed portion. |
| Answer» E. | |
| 39. |
A land is said to be water-logged if its soil pores within |
| A. | a depth of 40 cm are saturated |
| B. | a depth of 50 cm are saturated |
| C. | root zone of the crops are saturated |
| D. | all the above. |
| Answer» D. all the above. | |
| 40. |
The length of a meander is the distance along the river between the tangent point of one curve to the tangent point of |
| A. | reverse curve |
| B. | next curve of the same order |
| C. | reverse curve plus the width of the river |
| D. | none of these. |
| Answer» C. reverse curve plus the width of the river | |
| 41. |
Irrigation canals are generally aligned along |
| A. | ridge line |
| B. | contour line |
| C. | valley line |
| D. | straight line. |
| Answer» B. contour line | |
| 42. |
The structure constructed to allow drainage water to flow under pressure through an inverted syphon below a canal, is called |
| A. | syphon |
| B. | super passage |
| C. | aqueduct |
| D. | syphon aqueduct. |
| Answer» E. | |
| 43. |
In rigid module, the discharge |
| A. | is independent of water levels in the distributary and water course |
| B. | depends upon the water level in distributary |
| C. | depends upon the water level in the water course |
| D. | depends upon the water levels of both, i.e. distributary and water course |
| Answer» B. depends upon the water level in distributary | |
| 44. |
Regime conditions in a channel may occur if |
| A. | discharge is constant |
| B. | channel flows uniformly in incoherent alluvium as that transported in suspension |
| C. | silt grade and silt charge are constant |
| D. | all the above. |
| Answer» E. | |
| 45. |
In a concrete canal the approximate permissible velocity of water should not exceed |
| A. | 0.5 m/sec |
| B. | 1 m/sec |
| C. | 1.5 m/sec |
| D. | 2 m/sec |
| Answer» E. | |
| 46. |
The ratio of the head recovered to the head put in, is known as |
| A. | efficiency |
| B. | sensitivity |
| C. | flexibility |
| D. | modular limit. |
| Answer» B. sensitivity | |
| 47. |
For smooth entry of water in a canal, the angle between head regulator and water is generally kept |
| A. | 80° |
| B. | 90° |
| C. | 110° |
| D. | 120° |
| Answer» D. 120° | |
| 48. |
The down stream expansion head of a guide bank is extended to subtend an angle at the centre, equal to |
| A. | 30° |
| B. | 45° |
| C. | 60° |
| D. | 90° |
| Answer» C. 60° | |
| 49. |
Pick up the incorrect statement from the following |
| A. | A bank in the cross-section of a canal is provided on the right |
| B. | A bank in the cross-section of a canal is provided on the left |
| C. | A 'dowla' in the cross-section of a canal is provided on the left |
| D. | None of these. |
| Answer» C. A 'dowla' in the cross-section of a canal is provided on the left | |
| 50. |
Water-shed line is abondened for aligning an irrigation canal if |
| A. | water shed forms a sharp loop |
| B. | canal has to take off from a river |
| C. | towns and villages are located on the water shed line |
| D. | all the above. |
| Answer» E. | |