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MCQOPTIONS
This section includes 5814 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 3001. |
From the data of the rain storm shown in the below figure, the value of Windex is |
| A. | 1.5 cm/hour |
| B. | 2 cm/hour |
| C. | 2.5 cm/hour |
| D. | 2 cm/hour. |
| Answer» D. 2 cm/hour. | |
| 3002. |
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. | |
| 3003. |
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 index 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 | |
| 3004. |
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. | |
| 3005. |
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. | <img src="/_files/images/civil-engineering/water-resources-engineering/174-8.97-1.png"> |
| B. | <img src="/_files/images/civil-engineering/water-resources-engineering/174-8.97-2.png"> |
| C. | <img src="/_files/images/civil-engineering/water-resources-engineering/174-8.97-3.png"> |
| D. | <img src="/_files/images/civil-engineering/water-resources-engineering/174-8.97-4.png"> |
| Answer» B. <img src="/_files/images/civil-engineering/water-resources-engineering/174-8.97-2.png"> | |
| 3006. |
If the velocities of flow of a stream of 10 m depth recorded by a current meter at depths of 2 m and 8 m are 0.7 m and 0.3 m respectively, the discharge per unit width of the stream in cubic metres, is |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 5 |
| E. | 6 |
| Answer» E. 6 | |
| 3007. |
If P and A are the perimeter and area of a drainage basin, its compactness coefficient, is |
| A. | <img src="/_files/images/civil-engineering/water-resources-engineering/172-8.83-1.png"> |
| B. | <img src="/_files/images/civil-engineering/water-resources-engineering/172-8.83-2.png"> |
| C. | <img src="/_files/images/civil-engineering/water-resources-engineering/172-8.83-3.png"> |
| D. | <img src="/_files/images/civil-engineering/water-resources-engineering/172-8.83-4.png"> |
| Answer» D. <img src="/_files/images/civil-engineering/water-resources-engineering/172-8.83-4.png"> | |
| 3008. |
The time required by rain water to reach the outlet of drainage basin, is generally called |
| A. | time of concentration |
| B. | time of overland flow |
| C. | concentration time of overland flow |
| D. | duration of the rainfall |
| E. | none of these. |
| Answer» B. time of overland flow | |
| 3009. |
The rainfall at any place is described by |
| A. | its intensity |
| B. | its duration |
| C. | its frequency |
| D. | all the above. |
| Answer» E. | |
| 3010. |
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. | |
| 3011. |
The radius of influence is |
| A. | radius of the main well |
| B. | distance from the wall of main well to the point of zero draw down |
| C. | distance from the centre of main well to the point of zero draw down |
| D. | none of these. |
| Answer» D. none of these. | |
| 3012. |
When a constant discharge 2.91 litres/sec. was obtained in a pumping test, the draw downs in the test wells at 3 m and 6.184 m were 2.6 m and 0.3 m respectively. If over-all depth of the pumping well was 16 m, the permeability of the soil, is |
| A. | 0.0005 cm/sec |
| B. | 0.001 cm/sec |
| C. | 0.002 cm/sec |
| D. | 0.01 cm/sec. |
| Answer» C. 0.002 cm/sec | |
| 3013. |
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. | <img src="/_files/images/civil-engineering/water-resources-engineering/174-8.98-1.png"> |
| B. | <img src="/_files/images/civil-engineering/water-resources-engineering/174-8.98-2.png"> |
| C. | <img src="/_files/images/civil-engineering/water-resources-engineering/174-8.98-3.png"> |
| D. | <img src="/_files/images/civil-engineering/water-resources-engineering/174-8.98-4.png"> |
| Answer» E. | |
| 3014. |
An intense rain is falling at a uniform rate of 7.5 cm/hour for a period of 60 minutes on a basin whose areas is 500 hectares. If the average infiltration capacity during the entire rain period is assumed to be 1.5 cm/hr, the maximum run-off rate based on 10 minute peak percentage of 16% from distributing graph of the basin, is |
| A. | 40 cumecs |
| B. | 60 cumecs |
| C. | 80 cumecs |
| D. | 100 cumecs. |
| Answer» D. 100 cumecs. | |
| 3015. |
The area of a drainage basin whose axial length is 100 km is 2500 sq. km. Its form factor is |
| A. | 0.10 |
| B. | 0.20 |
| C. | 0.25 |
| D. | 0.30 |
| E. | 0.35 |
| Answer» D. 0.30 | |
| 3016. |
Run off is measured in |
| A. | cubic metres |
| B. | cubic metres per sec. |
| C. | cubic metres per minute |
| D. | cubic metres per hour. |
| Answer» C. cubic metres per minute | |
| 3017. |
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. | |
| 3018. |
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. | |
| 3019. |
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. | |
| 3020. |
The run off is affected by |
| A. | size of the basin |
| B. | shape of the basin |
| C. | elevation of the water shed |
| D. | all the above. |
| Answer» E. | |
| 3021. |
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. | |
| 3022. |
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 | |
| 3023. |
Pick up correct statement from the following : |
| A. | The air from outer portion of cyclones gets lifted for causing precipitation |
| B. | The air from central portion of cyclone's gets lifted for causing precipitation |
| C. | The air from entire surface of the cyclones gets lifted for causing precipitation |
| D. | None of those. |
| Answer» C. The air from entire surface of the cyclones gets lifted for causing precipitation | |
| 3024. |
Precipitation caused due to upward movement of warmer air as compared to surrounding air, is called |
| A. | cyclonic precipitation |
| B. | convective precipitation |
| C. | orographic precipitation |
| D. | none of these. |
| Answer» C. orographic precipitation | |
| 3025. |
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 | |
| 3026. |
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. | |
| 3027. |
Sharp crested weirs are generally used |
| A. | for large flows |
| B. | for small flows |
| C. | for streams carrying high sediment loads |
| D. | for rivers carrying floating debris |
| E. | none of these. |
| Answer» B. for small flows | |
| 3028. |
If is unit weight of water, Q the discharge in cumecs, H the total head lift and , the efficiency of the pump, the H.P. of the motor is |
| A. | <img src="/_files/images/civil-engineering/water-resources-engineering/177-8.132-1.png"> |
| B. | <img src="/_files/images/civil-engineering/water-resources-engineering/177-8.132-2.png"> |
| C. | <img src="/_files/images/civil-engineering/water-resources-engineering/177-8.132-3.png"> |
| D. | <img src="/_files/images/civil-engineering/water-resources-engineering/177-8.132-4.png"> |
| Answer» B. <img src="/_files/images/civil-engineering/water-resources-engineering/177-8.132-2.png"> | |
| 3029. |
The recurrence interval (R.I.) of 20 cm rain storm at a place is 5 years. |
| A. | The place will definitely have 20 cm rain storm after every five years |
| B. | The place may have 20 cm rain storm after every five years |
| C. | The place may have 20 cm rain storm within a set of 5 years twice |
| D. | None of these. |
| Answer» C. The place may have 20 cm rain storm within a set of 5 years twice | |
| 3030. |
The rational formula for calculating the discharge, is (where A is the area of basin and Po is one hour rainfall) |
| A. | <img src="/_files/images/civil-engineering/water-resources-engineering/173-8.96-1.png"> |
| B. | <img src="/_files/images/civil-engineering/water-resources-engineering/173-8.96-2.png"> |
| C. | <img src="/_files/images/civil-engineering/water-resources-engineering/173-8.96-3.png"> |
| D. | <img src="/_files/images/civil-engineering/water-resources-engineering/173-8.96-4.png"> |
| Answer» D. <img src="/_files/images/civil-engineering/water-resources-engineering/173-8.96-4.png"> | |
| 3031. |
The specifications of most commonly used standard gauges in India, are |
| A. | 200 sq. cm collector and 4 litres bottle |
| B. | 100 sq. cm collector and 2 litres bottle |
| C. | 200 sq. cm collector and 10 litres bottle |
| D. | 100 sq. cm collector and 4 litres bottle. |
| Answer» B. 100 sq. cm collector and 2 litres bottle | |
| 3032. |
The rate of evaporation from reservoirs may be determined by |
| A. | pan-measurement method |
| B. | empirical formulae |
| C. | storage equation method |
| D. | energy budget method |
| E. | all the above. |
| Answer» F. | |
| 3033. |
In estimating the rate of evaporation from the reservoir surface, a pan 1.5 metres in diameter, was filled upto 8.0 cm. During a specified period of time, the rainfall recorded was 5 cm. 3 cm of water was removed from the pan to keep the depth of water. At the end of the time, the depth was 9 cm. If the pan coefficient is 0.6, the evaporation loss is |
| A. | 2 mm |
| B. | 4 mm |
| C. | 6 mm |
| D. | 6 mm. |
| Answer» D. 6 mm. | |
| 3034. |
Dicken's formula for high flood estimate, is useful only for the catchments in |
| A. | Southern India |
| B. | Northern India |
| C. | Eastern India |
| D. | Western India. |
| Answer» C. Eastern India | |
| 3035. |
Discharge curve may be extended by logarithmic method if |
| A. | cross section of river is uniform |
| B. | river is broader and shallower |
| C. | river is of any type |
| D. | none of these. |
| Answer» B. river is broader and shallower | |
| 3036. |
Levees and flood walls, |
| A. | are designed to carry unbalanced water load |
| B. | are designed with adequate dimensions |
| C. | are means of controlling floods |
| D. | are never provided free-boards. |
| Answer» E. | |
| 3037. |
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. | |
| 3038. |
Symon's rain gauge is |
| A. | tipping-bucket gauge |
| B. | weighing type gauge |
| C. | float recording gauge |
| D. | non-recording gauge. |
| Answer» E. | |
| 3039. |
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. | |
| 3040. |
Rain simulators are used for the determination of |
| A. | evaporation |
| B. | precipitation |
| C. | run off |
| D. | infiltration capacity |
| E. | none of these. |
| Answer» E. none of these. | |
| 3041. |
Precipitation includes |
| A. | rain |
| B. | snow |
| C. | hail |
| D. | all of these. |
| Answer» E. | |
| 3042. |
Isohytes are the imaginary lines joining the points of equal |
| A. | pressure |
| B. | height |
| C. | humidity |
| D. | rainfall. |
| Answer» E. | |
| 3043. |
According to Thiem, the permeability of an aquifer may be obtained from the equation |
| A. | <img src="/_files/images/civil-engineering/water-resources-engineering/176-8.123-1.png"> |
| B. | <img src="/_files/images/civil-engineering/water-resources-engineering/176-8.123-2.png"> |
| C. | <img src="/_files/images/civil-engineering/water-resources-engineering/176-8.123-3.png"> |
| D. | <img src="/_files/images/civil-engineering/water-resources-engineering/176-8.123-4.png"> |
| E. | all the above. |
| Answer» F. | |
| 3044. |
Non-recording rain gauges |
| A. | collect the rain whose volume is measured by means of graduated cylinders |
| B. | collect the rain which is directly measured by means of graduated cylinders in centimetres of water depth |
| C. | are generally used in hilly terrain |
| D. | are cylindrical in shape. |
| Answer» C. are generally used in hilly terrain | |
| 3045. |
Indian Meteorological department uses the standard gauges whose collectors have apertures of |
| A. | 50 or 100 sq. cm area |
| B. | 100 or 150 sq. cm area |
| C. | 100 or 200 sq. cm area |
| D. | 250 or 500 sq. cm area. |
| Answer» D. 250 or 500 sq. cm area. | |
| 3046. |
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 | |
| 3047. |
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 | |
| 3048. |
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. | |
| 3049. |
The Dupuit formula is based on |
| A. | one observation well |
| B. | two observation wells |
| C. | three observation wells |
| D. | no observation well |
| E. | none of these. |
| Answer» E. none of these. | |
| 3050. |
A well is sunk in an unconfined aquifer having a saturated depth of 100 m. Assuming the equilibrium flow conditions and a homogeneous aquifer and radius of influence to be same, the ratio of discharges at 20 m and 40 m draw downs, is |
| A. | 2/3 |
| B. | 5/4 |
| C. | 4/5 |
| D. | 7/8 |
| E. | 8/7 |
| Answer» F. | |