MCQOPTIONS
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MCQOPTIONS
This section includes 131 Mcqs, each offering curated multiple-choice questions to sharpen your Civil Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 101. |
An outlet is said to be proportional if its flexibility, is |
| A. | Zero |
| B. | Less than one |
| C. | More than one |
| D. | One |
| Answer» E. | |
| 102. |
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. | Both (a) and (b) |
| D. | None of these |
| Answer» D. None of these | |
| 103. |
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) | |
| 104. |
According to Lacey, depth of scour in a river depends upon the straightness of the reach. If D is the depth of scour in regime flow in a right angled bend, it is |
| A. | 1.25 D |
| B. | 1.50 D |
| C. | 1.75 D |
| D. | 2.00 D |
| Answer» E. | |
| 105. |
Cross regulators in main canals are provided |
| A. | To regulate water supply in the distributaries |
| B. | To increase water head upstream when a main canal is running with low supplies |
| C. | To overflow excessive flow water |
| D. | None of these |
| Answer» C. To overflow excessive flow water | |
| 106. |
In Montague type fall |
| A. | A straight glacis is provided |
| B. | A circular glacis is provided |
| C. | A parabolic glacis is provided |
| D. | No glacis is provided |
| Answer» D. No glacis is provided | |
| 107. |
If the optimum depth of kor watering for a crop is 15.12 cm, the outlet factor for the crop for four week period in hectares per cumec, is |
| A. | 1000 |
| B. | 1200 |
| C. | 1400 |
| D. | 1600 |
| Answer» E. | |
| 108. |
A hydraulic structure is designed to withstand |
| A. | Seepage forces |
| B. | Hydraulic jump |
| C. | Hydraulic pressure |
| D. | All the above |
| Answer» E. | |
| 109. |
According to Khosla, the exits gradient of surface flow |
| A. | Depends upon the b/d ratio |
| B. | Is independent of the b/d ratio |
| C. | Is independent of the depths of d/s cut off walls |
| D. | None of these |
| Answer» B. Is independent of the b/d ratio | |
| 110. |
The sinuosity of a meander is the ratio of |
| A. | Meander length and the width of meander |
| B. | Meander length and half width of the river |
| C. | Curved length and the straight distance |
| D. | None of these |
| Answer» D. None of these | |
| 111. |
Borrow pits should preferably be located in |
| A. | Field on the left side of the canal |
| B. | Field on the right side of the canal |
| C. | Fields on both sides of the canal |
| D. | Central half width of the section of the canal |
| Answer» E. | |
| 112. |
The measure to remove water logging of land, is |
| A. | To reduce percolation from canals and water courses |
| B. | To increase outflow from the ground water reservoir |
| C. | Both (a) and (b) |
| D. | Neither (a) nor (b) |
| Answer» D. Neither (a) nor (b) | |
| 113. |
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 | |
| 114. |
When a canal flowing under pressure is carried below a natural drainage such that its F.S.L. does not touch the underside of the supporting structure, the structure so provided, is called |
| A. | Syphon |
| B. | Aqueduct |
| C. | Super passage |
| D. | Syphon-aqueduct |
| Answer» D. Syphon-aqueduct | |
| 115. |
A river training work is generally required when the river is |
| A. | Meandering |
| B. | Aggrading |
| C. | Degrading |
| D. | All the above |
| Answer» B. Aggrading | |
| 116. |
Pick up the correct statement from the following: |
| A. | Gravity water is harmful to crops |
| B. | Hygroscopic water remains attached to soil molecules by chemical bond |
| C. | Capillary moisture held in the soil pores against gravity by surface tension, is utilised by plants |
| D. | All the above |
| Answer» D. All the above | |
| 117. |
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. | |
| 118. |
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. | Super-aqueduct |
| D. | Syphon aqueduct |
| Answer» E. | |
| 119. |
For a unique design of a channel by Kennedy’s theory |
| A. | Its breadth must only be known |
| B. | Its depth must only be known |
| C. | Its breadth and depth ratio must only be known |
| D. | All the above |
| Answer» D. All the above | |
| 120. |
Pick up the correct statement from the following |
| A. | Escapes are essential safety valves in a canal system |
| B. | The escapes must lead the surplus water to natural drainages |
| C. | The escapes are aligned to take advantage of contours of lower values |
| D. | All the above |
| Answer» E. | |
| 121. |
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 | |
| 122. |
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) | |
| 123. |
Pick up the correct sequence of the part of a canal system from the following |
| A. | Head work-distributary-branch canal-minor |
| B. | Head works-main canal-branch canal-distributary-minor |
| C. | Head works-main canal-branch canal-minor-distributary |
| D. | Heads works-branch canal-main canal distributary, mino |
| Answer» C. Head works-main canal-branch canal-minor-distributary | |
| 124. |
To hold hydraulic jumps, baffle walls are provided in |
| A. | Sarda type falls |
| B. | English type falls |
| C. | Montague type falls |
| D. | Vertical type falls |
| Answer» C. Montague type falls | |
| 125. |
If the height of the hydraulic gradient line above the floor of thickness t is h and the specific gravity of the material of the floor is G, the minimum thickness t of the floor downstream of the crest-wall, is given by the equation |
| A. | t = (h + 1)/(G + t) |
| B. | t = (h – 1)/(G + t) |
| C. | t = (h – 1)/(G – t) |
| D. | t = (h + 1)/G |
| Answer» D. t = (h + 1)/G | |
| 126. |
If A is the area of the surface, density of water, then |
| A. | Total pressure on the surface is e |
| B. | Depth of the point at which total pressure acts is equal to its moment of inertia divided by |
| C. | Depth of the centre of pressure is 2/3H vertically below the surface |
| D. | All the above |
| Answer» E. | |
| 127. |
If water table is comparatively high, the irrigation canal becomes useless, due to |
| A. | Large amount of seepage |
| B. | Water logging of the cultivated areas |
| C. | Uncertain water demand |
| D. | All the above |
| Answer» E. | |
| 128. |
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 | |
| 129. |
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. | |
| 130. |
Canals taken off from ice-fed perennial rivers, are known |
| A. | Permanent canals |
| B. | Ridge canals |
| C. | Perennial canals |
| D. | Inundation canals |
| Answer» D. Inundation canals | |
| 131. |
The consumptive use of water for 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 the above |
| Answer» E. | |