MCQOPTIONS
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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.
| 101. |
Isopiastic lines are the contours |
| A. | drawn to represent water table |
| B. | drawn to represent piezometric heads |
| C. | drawn to piezometric surface |
| D. | none of these. |
| Answer» D. none of these. | |
| 102. |
The quantity of water retained by the sub-soil against gravity, is known |
| A. | yield |
| B. | porosity |
| C. | specific yield |
| D. | specific retention |
| Answer» E. | |
| 103. |
The infiltration capacity during rain storm, is considerably reduced due to |
| A. | surface detention |
| B. | soil moisture |
| C. | compaction due to rain |
| D. | washing of fine particles |
| Answer» E. | |
| 104. |
While calculating the average depth of annual precipitation in a catchment basin, importance to individual raingauge station is given in |
| A. | Arithmetical method |
| B. | Thiessen's mean method |
| C. | Isohyetal method |
| D. | both (a) and (b) |
| Answer» E. | |
| 105. |
The initial basin recharge is equal to |
| A. | interception |
| B. | depression storage |
| C. | rain absorbed by the moisture deficiency |
| D. | all the above. |
| Answer» E. | |
| 106. |
Rain simulators are used for the determination of |
| A. | evaporation |
| B. | precipitation |
| C. | run off |
| D. | infiltration capacity |
| Answer» E. | |
| 107. |
Ryve's formula for flood estimate in cumecs, is |
| A. | Q = CA3/4 |
| B. | Q = CA2/3 |
| C. | Q = CA1/2 |
| D. | Q = CA1/4. |
| Answer» C. Q = CA1/2 | |
| 108. |
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. | |
| 109. |
Knowledge of hydrology is necessary for civil engineers for |
| A. | designing and construction of irrigation structures |
| B. | designing and construction of bridges and culverts |
| C. | flood control works |
| D. | all the above. |
| Answer» E. | |
| 110. |
Time of overland flow, is affected by |
| A. | slope of the basin |
| B. | type of the ground surface |
| C. | length of the flow path |
| D. | all the above. |
| Answer» E. | |
| 111. |
Prof. Running suggested the method for extending the discharge curve. It is known as |
| A. | Logarithmic method |
| B. | y method |
| C. | General method |
| D. | None of these. |
| Answer» B. y method | |
| 112. |
The surface Run-off is the quantity of water |
| A. | absorbed by soil |
| B. | intercepted by buildings and vegetative cover |
| C. | required to fill surface depressions |
| D. | that reaches the stream channels |
| Answer» E. | |
| 113. |
Relative humidity is the ratio of actual vapour pressure to the saturation vapour pressure |
| A. | at the same temperature |
| B. | at the same pressure |
| C. | in the same volume |
| D. | in the atmosphere. |
| Answer» B. at the same pressure | |
| 114. |
The critical depth in a channel can be produced |
| A. | by raising the bottom of the channel |
| B. | by lowering the bottom of the channel |
| C. | by decreasing the width of the channel |
| D. | by increasing the width of the channel |
| Answer» E. | |
| 115. |
The efficiency of a pump may be taken as |
| A. | 0.55 |
| B. | 0.6 |
| C. | 0.65 |
| D. | 0.7 |
| Answer» D. 0.7 | |
| 116. |
The main factor which affects the infiltration capacity, is |
| A. | thickness of saturated layer |
| B. | depth of surface detention |
| C. | soil moisture |
| D. | all the above. |
| Answer» E. | |
| 117. |
For determination of average annual precipitation in a catchment basin, the best method is |
| A. | Arithmetical method |
| B. | Thiessen's mean method |
| C. | Isohyetal method |
| D. | None of these. |
| Answer» D. None of these. | |
| 118. |
A recording type rain gauge |
| A. | produces a mass curve of rain fall |
| B. | records the cumulative rain |
| C. | is sometimes called integrating rain gauge or continuous rain gauge |
| D. | all the above. |
| Answer» E. | |
| 119. |
Hydrograph is a graphical representation of |
| A. | surface run off |
| B. | ground water flow |
| C. | rain fall |
| D. | discharge flowing in the river |
| Answer» E. | |
| 120. |
If h is the loss due to friction in a pipe. Total losses in strainer and bends may be taken as |
| A. | 0.01 h |
| B. | 0.45 h |
| C. | 0.20 h |
| D. | 0.25 h |
| Answer» E. | |
| 121. |
For the estimate of high floods in fan-shaped catchment, the formula used is |
| A. | Dicken's formula |
| B. | Ryve's formula |
| C. | Inglis formula |
| D. | none of these. |
| Answer» D. none of these. | |
| 122. |
The best instrument for measuring the velocity of a stream flow is |
| A. | pitot tube |
| B. | Price's current meter |
| C. | surface float |
| D. | sub-surface float. |
| Answer» C. surface float | |
| 123. |
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 |
| Answer» E. | |
| 124. |
For calculating the evaporation rate over a reservoir surface E = 0.771 (1.465 - 0.00732 B) (0.44 - 0.007375 V) (pe - pa), 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. | |
| 125. |
The Dupuit formula is based on |
| A. | one observation well |
| B. | two observation wells |
| C. | three observation wells |
| D. | no observation well |
| Answer» E. | |
| 126. |
If the viscosity of ground water is 1.00, the Slitcher's constant is 400, the effective size of soil particles in acquifer is 0.5 mm and hydraulic gradient is 1 in 80, the velocity of flow is |
| A. | 0.25 m/day |
| B. | 0.50 m/day |
| C. | 0.75 m/day |
| D. | 1.00 m/day |
| Answer» E. | |
| 127. |
The area of a drainage basin whose axial length is 100 km is 2500 sq. km. Its form factor is |
| A. | 0.1 |
| B. | 0.2 |
| C. | 0.25 |
| D. | 0.3 |
| Answer» D. 0.3 | |
| 128. |
From the Survey of India map, the distance of the critical point is 20 km and difference in elevation is 193 m. The over land flow time, is |
| A. | 2 hours |
| B. | 3 hours |
| C. | 2 hours and 30 minutes |
| D. | 3 hours and 30 minutes |
| Answer» E. | |
| 129. |
In India, rain fall is generally recorded at |
| A. | 8 A.M. |
| B. | 12 Noon |
| C. | 4 P.M. |
| D. | 8 P.M. |
| Answer» B. 12 Noon | |
| 130. |
Absolute humidity in air |
| A. | decreases at higher altitudes |
| B. | increases at higher altitudes |
| C. | remains constant at all altitudes |
| D. | none of these. |
| Answer» B. increases at higher altitudes | |
| 131. |
Pick up the correct equation from the following : |
| A. | Run off = Surface run off + Ground water flow |
| B. | Run off = Surface run off - Ground water flow |
| C. | Run off = Surface run off / Ground water flow |
| D. | Run off = Surface run off x Ground water flow. |
| Answer» B. Run off = Surface run off - Ground water flow | |
| 132. |
For computing the run off volumes of large areas, number of infiltrations used are |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 5 |
| Answer» B. 3 | |
| 133. |
The rainfall at any place is described by |
| A. | its intensity |
| B. | its duration |
| C. | its frequency |
| D. | all the above. |
| Answer» E. | |
| 134. |
If the grain size of soil increases |
| A. | surface area decreases |
| B. | specific retention decreases |
| C. | specific yield increases |
| D. | water supply in well increases |
| Answer» E. | |
| 135. |
The deficiency in rain catch due to vertical acceleration of air forced upward over the gauge, is |
| A. | greater for heavy rain |
| B. | greater for lighter rain |
| C. | greater for large drops |
| D. | lesser for small rain drops. |
| Answer» C. greater for large drops | |
| 136. |
Hydrology helps in |
| A. | predicting maximum flows |
| B. | deciding the minimum reservoir capacity |
| C. | forecasting the availability of quantity of water at reservoir site |
| D. | predicting the effects on the river water level on completion of dams |
| Answer» E. | |
| 137. |
Water is useful for |
| A. | running hydroelectric turbines |
| B. | floating the boats and ships |
| C. | providing steam for running locomotives |
| D. | warming dwelling units |
| Answer» E. | |
| 138. |
Precipitation caused by lifting of an air mass due to the pressure difference, is called |
| A. | cyclonic precipitation |
| B. | convective precipitation |
| C. | orographic precipitation |
| D. | none of these. |
| Answer» B. convective precipitation | |
| 139. |
If the potential infiltration of a water shed having a soil with fair pasture cover, is 10 cm and rainfall is 12 cm, the direct run off is : |
| A. | 2 cm |
| B. | 3 cm |
| C. | 5 cm |
| D. | 8 cm. |
| Answer» D. 8 cm. | |
| 140. |
Consumptive use of a crop during growth, is the amount of |
| A. | interception |
| B. | transpiration |
| C. | evaporation |
| D. | all the above. |
| Answer» E. | |
| 141. |
In nature water may occur as |
| A. | liquid |
| B. | solid |
| C. | vapours |
| D. | all the above. |
| Answer» E. | |
| 142. |
The run off a drainage basin is |
| A. | Initial recharge + ground water accretion + precipitation |
| B. | Precipitation + ground water accretion + initial recharge |
| C. | Precipitation - ground water accretion + initial recharge |
| D. | Precipitation - ground water accretion - initial recharge. |
| Answer» E. | |
| 143. |
The theory of infiltration capacity was given by |
| A. | Merrill Bernard |
| B. | W.W. Horner |
| C. | Le-Roy K. Shermen |
| D. | Robert E. Horten. |
| Answer» E. | |
| 144. |
A hydraulic jump in a control meter will be formed above the control, if its original |
| A. | depth is more than critical depth |
| B. | depth is less than the critical depth |
| C. | depth is equal to critical depth |
| D. | none of these. |
| Answer» C. depth is equal to critical depth | |
| 145. |
Unit Hydrograph theory was enunciated by |
| A. | Merril Bernard |
| B. | W.W. Horner |
| C. | Le-Roy K. Shermen |
| D. | Robert E. Horten. |
| Answer» D. Robert E. Horten. | |
| 146. |
Pick up the correct statement from the following : |
| A. | Rivers, lakes, oceans and springs get water from the rains |
| B. | Rain water is obtained by evaporation from rivers, lakes and oceans |
| C. | Water remains in atmosphere as vapours |
| D. | Hydrologic cycle is a continuous process of evaporation and precipitation of water in atmosphere |
| Answer» E. | |
| 147. |
Water contains |
| A. | one hydrogen atom and one oxygen atom |
| B. | two hydrogen atoms and one oxygen atom |
| C. | one hydrogen atom and two oxygen atoms |
| D. | three hydrogen atoms and two oxygen atoms |
| Answer» C. one hydrogen atom and two oxygen atoms | |