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.
| 101. |
For supplying water to rabi crop, kharif crop and sugarcane, the channel is designed for a capacity equal to the greater of the water requirement of_______________? |
| A. | rabi or kharif |
| B. | rabi and kharif or sugarcane |
| C. | rabi and sugarcane or kharif and sugarcane |
| D. | rabi or kharif or sugarcane |
| Answer» D. rabi or kharif or sugarcane | |
| 102. |
For an annual flood series arranged in descending order of magnitude, the return for a magnitude listed at position period m in a total data N is________________? |
| A. | N/(m+l) |
| B. | m/(N+l) |
| C. | m/N |
| D. | (N+l)/m |
| Answer» E. | |
| 103. |
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 | |
| 104. |
For a flood control reservoir, the effective storage is equal to_______________? |
| A. | useful storage – valley storage |
| B. | useful storage + surcharge storage |
| C. | useful storage + surcharge storage + valley storage |
| D. | useful storage + surcharge storage -valley storage |
| Answer» E. | |
| 105. |
For a catchment area of 120 km2, the equilibrium discharge in m3/hour of an S-curve obtained by the summation of 6 hour unit hydro graph is_______________? |
| A. | 0.2 x 106 |
| B. | 0.6 x 106 |
| C. | 2.4 xlO6 |
| D. | 7.2 xlO6 |
| Answer» B. 0.6 x 106 | |
| 106. |
Dimensions of coefficient of transmissibility are______________? |
| A. | M°L°T° |
| B. | rvfL’T”1 |
| C. | M° L2 T1 |
| D. | M’LV |
| Answer» D. M’LV | |
| 107. |
Cyclonic precipitation is caused by lifting of an air mass due to________________? |
| A. | pressure difference |
| B. | temperature difference |
| C. | natural topographical barriers |
| D. | all of the above |
| Answer» B. temperature difference | |
| 108. |
Coefficient of discharge of an ogee spillway________________? |
| A. | depends on depth of approach and upstream slope |
| B. | depends on downstream apron interference and downstream submergence |
| C. | remains constant |
| D. | both (A) and (B) |
| Answer» E. | |
| 109. |
Assertion A : To estimate the rainfall over a catchment, the number of raingauges required per unit area is large for hilly areas. Reason R : Rainfall gradient is steep. Select your correct answer according to the coding system given below ? |
| A. | Both A and R are true and R is the correct explanation of A |
| B. | Both A and R are true but R is not the correct explanation of A |
| C. | A is true but R is false |
| D. | A is false but R is true |
| Answer» B. Both A and R are true but R is not the correct explanation of A | |
| 110. |
As per Lacey’s theory, the silt factor is_________________? |
| A. | directly proportional to average par¬ticle size |
| B. | inversely proportional to average par¬ticle size |
| C. | directly proportional to square root of average particle size |
| D. | not related to average particle size |
| Answer» D. not related to average particle size | |
| 111. |
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. | |
| 112. |
As compared to crest of the normal portion of the weir, the crest of the under sluice portion of weir is kept at_____________? |
| A. | lower level |
| B. | higher level |
| C. | same level |
| D. | any of the above depending on the design |
| Answer» B. higher level | |
| 113. |
An artesian aquifer is the one where______________? |
| A. | water surface under the ground is at atmospheric pressure |
| B. | water is under pressure between two impervious strata |
| C. | water table serves as upper surface of zone of saturation |
| D. | none of the above |
| Answer» C. water table serves as upper surface of zone of saturation | |
| 114. |
An aggrading river is a_________________? |
| A. | silting river |
| B. | scouring river |
| C. | both silting and scouring river |
| D. | neither silting nor scouring river |
| Answer» B. scouring river | |
| 115. |
According to Khosla’s theory, the exit gradient in the absence of a downstream cutoff is_____________? |
| A. | 0 |
| B. | unity |
| C. | infinity |
| D. | very large |
| Answer» D. very large | |
| 116. |
A unit hydro graph has one unit of_______________? |
| A. | rainfall duration |
| B. | rainfall excess |
| C. | time base of direct runoff |
| D. | discharge |
| Answer» C. time base of direct runoff | |
| 117. |
A straight glacis type fall with a baffle platform and a baffle wall is called_____________? |
| A. | vertical dropfall |
| B. | glacis fall |
| C. | Montague type fall |
| D. | inglis fall |
| Answer» E. | |
| 118. |
A runoff river plant_________________? |
| A. | is a medium head scheme |
| B. | generates power during peak hours only |
| C. | is suitable only on a perennial river |
| D. | has no pondage at all |
| Answer» D. has no pondage at all | |
| 119. |
A runoff river plant is____________? |
| A. | a low head scheme |
| B. | a medium head scheme |
| C. | a high head scheme |
| D. | none of the above |
| Answer» B. a medium head scheme | |
| 120. |
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) | |
| 121. |
A river bend characterized by silting_______________? |
| A. | scouring on concave side |
| B. | silting on convex side |
| C. | scouring on convex side and on concave side |
| D. | scouring on concave side and silting on convex side |
| Answer» E. | |
| 122. |
A repelling groyne is aligned________________? |
| A. | pointing upstream |
| B. | pointing downstream |
| C. | perpendicular to bank |
| D. | parallel to bank |
| Answer» B. pointing downstream | |
| 123. |
A raingauge should preferably be fixed________________? |
| A. | near the building |
| B. | under the tree |
| C. | in an open space |
| D. | in a closed space |
| Answer» D. in a closed space | |
| 124. |
A multipurpose reservoir is the one which is_________________? |
| A. | designed for one purpose but serves more than one purpose |
| B. | planned and constructed to serve various purposes |
| C. | both (A. and (B. |
| D. | none of the above |
| Answer» C. both (A. and (B. | |
| 125. |
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 | |
| 126. |
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 | |
| 127. |
A hydroelectric scheme operating under a head of 80 m will be classified as_____________? |
| A. | low head scheme |
| B. | medium head scheme |
| C. | high head scheme |
| D. | none of the above |
| Answer» D. none of the above | |
| 128. |
A divide wall is provided_______________? |
| A. | at right angle to the axis of weir |
| B. | parallel to the axis of weir and up-stream of it |
| C. | parallel to the axis of weir and down-stream of it |
| D. | at an inclination to the axis of weir |
| Answer» B. parallel to the axis of weir and up-stream of it | |
| 129. |
A deep well_________________? |
| A. | is always deeper than a shallow well |
| B. | has more discharge than a shallow well |
| C. | is weaker structurally than a shallow well |
| D. | both (A) and (B) |
| Answer» C. is weaker structurally than a shallow well | |
| 130. |
A current meter is used to measure the__________________? |
| A. | velocity of flow of water |
| B. | depth of flow of water |
| C. | discharge |
| D. | none of the above |
| Answer» B. depth of flow of water | |
| 131. |
A 70% index of wetness means_______________? |
| A. | rain excess of 30% |
| B. | rain deficiency of 30% |
| C. | rain deficiency of 70% |
| D. | none of the above |
| Answer» C. rain deficiency of 70% | |
| 132. |
If Dc is the critical depth, D is the depth of water down stream and HL is the total head loss at the cistern of a vertical fall, the depth x of the cistern below the bed level down stream suggested by Blench, is |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» C. [C]. | |
| 133. |
If q is the discharge per unit width of a channel and D1 D2 are the depths of water before and after hydraulic jump, the following relationship is true |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» D. [D]. | |
| 134. |
If D1 and D2 are depths of water upstream and down stream of a hydraulic jump, the loss of head at the jump, is |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» E. | |
| 135. |
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 down stream of the crestwall, is given by the equation |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» D. [D]. | |
| 136. |
If A is the area of the surface, x is the depth of its C.G. from the surface of the water and ω is the density of water, then |
| A. | total pressure on the surface is equal to ω x |
| B. | depth of the point at which total pressure acts is equal to its moment of inertia divided by A x |
| C. | depth of the centre of pressure is 2/3H vertically below the surface |
| D. | all the above. |
| Answer» E. | |
| 137. |
If the straight sides of a triangular section of a lined canal with circular bottom of radius D, make an angle θ with horizontal, the hydraulic mean depth is |
| A. | D |
| B. | D/2 |
| C. | D/3 |
| D. | D/4 |
| E. | D/5 |
| Answer» C. D/3 | |
| 138. |
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. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» B. [B]. | |
| 139. |
V and R are the regime mean velocity and hydraulic mean depth respectively in metres. Lacey's silt factor f is |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» D. [D]. | |
| 140. |
If B and d are the bed width and depth of a channel in metres, the combined losses due to evaporation and seepage in cumecs per kilometre length of the channel, is |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» E. | |
| 141. |
If V0 is the critical velocity of a channel, its silt transporting power, according to Kennedy, is proportional to |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| E. | [E]. |
| Answer» D. [D]. | |
| 142. |
Trial procedure of canal design by Kennedy's theory is based upon the equation |
| A. | Q = A . Y |
| B. | [B]. |
| C. | [C]. |
| D. | all the above. |
| Answer» E. | |
| 143. |
According to Kennedy, the critical velocity (V0) in metres in a channel is the mean velocity which keeps the channel free from silting or scouring. Its value is given by (where m is critical velocity ratio and D is the depth of the channel). |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» C. [C]. | |
| 144. |
If Δ is the depth of water in metres, B is the number of days of base period and D is the duty in hactare/cumec, the relationship which holds good, is |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| E. | none of these. |
| Answer» E. none of these. | |
| 145. |
For a unique design of a channel by Kennedy's theory |
| A. | a sub-critical velocity meets a stream moving with a hyper-critical velocity. |
| B. | its breadth must only be known |
| C. | its depth must only be known |
| D. | its breadth and depth ratio must only be known |
| Answer» D. its breadth and depth ratio must only be known | |
| 146. |
A minimum of 90 cm free board is provided if the discharge in the canal is between |
| A. | contour canals |
| B. | ridge canals. |
| C. | 30 to 33 cumecs |
| D. | 30 to 60 cumecs |
| Answer» D. 30 to 60 cumecs | |
| 147. |
Pick up the incorrect statement from the following. Culturable commanded area is the gross area of an irrigation canal system less |
| A. | none of these. |
| B. | populated area |
| C. | alkaline area |
| D. | forest area |
| Answer» E. | |
| 148. |
When a canal is carried over a natural drainage, the structure provided, is known as |
| A. | 25 cumecs. |
| B. | syphon |
| C. | aqueduct |
| D. | super passage |
| Answer» C. aqueduct | |
| 149. |
If the straight sides of a triangular section of a lined canal with circular bottom of radius R, make an angle θ with horizontal, the perimeter of the canal is |
| A. | none of these. |
| B. | R(θ + tan θ) |
| C. | 2R(θ + tan θ) |
| D. | R(θ + cos θ) |
| Answer» E. | |
| 150. |
The top soil of a water logged field becomes more alkaline and infertile if its pH value is |
| A. | none of these. |
| B. | 6 |
| C. | 8 |
| D. | 9 |
| Answer» E. | |