MCQOPTIONS
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MCQOPTIONS
This section includes 134 Mcqs, each offering curated multiple-choice questions to sharpen your ENGINEERING SERVICES EXAMINATION (ESE) knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
For high flood estimates the average value of the constant C in Dicken's formula Q = (CA)^3/4, is |
| A. | 6.5 |
| B. | 8.5 |
| C. | 9.5 |
| D. | 11.5 |
| Answer» E. | |
| 52. |
A soil strata may consist of |
| A. | soil zone |
| B. | intermediate zone |
| C. | capillary zone |
| D. | all the above. |
| Answer» E. | |
| 53. |
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. | |
| 54. |
Isohytes are the imaginary lines joining the points of equal |
| A. | pressure |
| B. | height |
| C. | humidity |
| D. | rainfall. |
| Answer» E. | |
| 55. |
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. | |
| 56. |
In the estimate of design flood, Dickens assumes that high flood in cumecs, is proportional to catchment area raised to the power |
| A. | 1/4 |
| B. | 1/2 |
| C. | 3/4 |
| D. | 2/3 |
| Answer» D. 2/3 | |
| 57. |
Hydrology is the science which deals with |
| A. | rain water |
| B. | river water |
| C. | sea water |
| D. | surface and underground water |
| Answer» E. | |
| 58. |
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 |
| Answer» D. 0.30 | |
| 59. |
A unit hydrograph is a hydrograph of a rain storm of a specified duration resulting from a run-off of |
| A. | 15 mm |
| B. | 20 mm |
| C. | 25 mm |
| D. | 30 mm. |
| Answer» C. 25 mm | |
| 60. |
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 | |
| 61. |
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. | |
| 62. |
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 | |
| 63. |
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. | |
| 64. |
Infiltration capacity of soil depends upon |
| A. | number of voids present in the soil |
| B. | shape and size of soil particles |
| C. | arrangement of soil particles |
| D. | all the above. |
| Answer» E. | |
| 65. |
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 | |
| 66. |
The efficiency of a pump may be taken as |
| A. | 0.55 |
| B. | 0.60 |
| C. | 0.65 |
| D. | 0.70 |
| Answer» D. 0.70 | |
| 67. |
Shrouding is provided in |
| A. | cavity type tube wells |
| B. | slotted type tube wells |
| C. | strainer type tube wells |
| D. | perforated type tube wells. |
| Answer» C. strainer type tube wells | |
| 68. |
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. | |
| 69. |
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. | |
| 70. |
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 | |
| 71. |
While determining the yield of a gravity well by pumping, the depth of water table in two tests wells at distances r1 and r2 from the centre of the main well were found to be s1 and s2 respectively. Assuming the coefficient of transmissibility of the soil as T, the discharge Q may be given by |
| A. | A |
| B. | B |
| C. | C |
| D. | D |
| Answer» D. D | |
| 72. |
The standard height of a standard rain gauge, is |
| A. | 10 cm |
| B. | 20 cm |
| C. | 30 cm |
| D. | 50 cm. |
| Answer» D. 50 cm. | |
| 73. |
Boston society of Civil Engineer's formula given by following equation, 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 | |
| 74. |
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. | 63.5 cm |
| Answer» E. | |
| 75. |
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 | |
| 76. |
If ω is unit weight of water, Q the discharge in cumecs, H the total head lift and η, the efficiency of the pump, the H.P. of the motor is |
| A. | A |
| B. | B |
| C. | C |
| D. | D |
| Answer» B. B | |
| 77. |
The rational formula for calculating the discharge, is (where A is the area of basin and Po is one hour rainfall) |
| A. | A |
| B. | B |
| C. | C |
| D. | D |
| Answer» D. D | |
| 78. |
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. | both (a) and (c) of above. |
| Answer» E. | |
| 79. |
If a gauge is installed perpendicular to the slope, its measurement is reduced by multiplying |
| A. | sine of the angle of inclination with vertical |
| B. | cosine of the angle of inclination with vertical |
| C. | tangent of the angle of inclination with vertical |
| D. | calibration coefficient of the gauge. |
| Answer» C. tangent of the angle of inclination with vertical | |
| 80. |
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 | |
| 81. |
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 (b) and (c). |
| Answer» E. | |
| 82. |
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. | |
| 83. |
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. | |
| 84. |
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. | |
| 85. |
If the area of storm hydrograph is equal to 10² cm, the ordinates of a unit hydrograph may be obtained by dividing the ordinates of the storm hydrograph by |
| A. | 0.5 |
| B. | 1 |
| C. | 2 |
| D. | 4 |
| Answer» E. | |
| 86. |
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. | 4 hours. |
| Answer» E. | |
| 87. |
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. | |
| 88. |
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 |
| Answer» E. | |
| 89. |
Bernard's distribution graph is a plot of time on X-axis and |
| A. | run off on the y-axis |
| B. | total run off on the y-axis |
| C. | percentage of total surface run off on y-axis |
| D. | percentage of total surface run off during uniform time intervals on y-axis |
| Answer» E. | |
| 90. |
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. | A |
| B. | B |
| C. | c |
| D. | D |
| Answer» B. B | |
| 91. |
If P and A are the perimeter and area of a drainage basin, its compactness coefficient, is |
| A. | A |
| B. | B |
| C. | C |
| D. | D |
| Answer» D. D | |
| 92. |
According to Thiem, the permeability of an aquifer may be obtained from the equation |
| A. | A |
| B. | B |
| C. | Both C and D |
| D. | All of these |
| Answer» E. | |
| 93. |
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 | |
| 94. |
The rainfall at any place is described by |
| A. | its intensity |
| B. | its duration |
| C. | its frequency |
| D. | all the above. |
| Answer» E. | |
| 95. |
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. | 1.25 m/day. |
| Answer» E. | |
| 96. |
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 | |
| 97. |
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 | |
| 98. |
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. | |
| 99. |
Run off includes |
| A. | precipitation over catchment area of the stream and its attributaries |
| B. | surface run off |
| C. | ground water flow |
| D. | all the above. |
| Answer» E. | |
| 100. |
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. | all the above. |
| Answer» E. | |