Exam Details
| Subject | ||
| Paper | paper 2 | |
| Exam / Course | mains | |
| Department | ||
| Organization | maharashtra public service commission | |
| Position | ||
| Exam Date | 2013 | |
| City, State | maharashtra, |
Question Paper
1. IN the case of which natural feature do the two contour lines intersect hill vallev saddle vertical clift
2. when 1. denotes the Latitudes and D denotes the departures, then the closing error is given by: <img src='./qimages/4450-2.jpg'> 3. The line through a point in which plane passing through that point and the north and south poles, intersects with the surface of the earth is known as :
True bearing
True Meridian
Arbitrarv meridian
(4)None of the above
4. The chainages of point of curvature and point of tangency of a simple circular curve are 1050.50 m and 1314.90 m respectively. The number of full chords for a peg interval of 30 m will be
(3)6
(4)9
5. In plane table survey the method used for locating points is Resection
(2) Radiation Intersection Either Radiation or Intersection
6. which of the following statement are correct An echo -sounder is also called as a fathometer.
A self -registering gauge should be installed in open.
An echo sounder can be used in strong currents.
Answer options
and
and
and
7. Overturning of a vehicle on a curve can be avoided by using: Transition curve Vertical curve Reverse curve Compound curve
8. Least count of a theodolite is 1 minute 30 minutes 1 degree 20 seconds
9. If the magnetic bearing of a line is 54°30' and magnetic declination is the true bearing of line will be 6r 59° 49° 60°
10. The process of determining the difference of elevations of stations from vertical angles and known distances, is known as Trigonometrical levelling Geodetic surveying Field astronomy Topographic surveying
11. The method of tacheometric surveying in which stadia hairs are not used and the readings are taken against the horizontal cross hair with measurement of vertical angle twice for one single observation is known as Substance method Tangential system Fixed hair method None of the above
12. Arithmatic check in levelling indicates: Accuracy of field work Correctness of computations Instrumental error Error in staff readings
13. In Global Positioning System (G.P.5.) there are more than 24 Nos. of G.P.5. Satellites moving in circular orbits around the earth with the inclination of 65 35 45 55
14. For building project estimates which method is generally used in PWD Long wall and Short wall method Centre line method Crossing method
(4) None of the above
15. A building was constructed 20 years ago at 50,000. The estimated life of the building is 90 years. What is the present value of the building using straight -line method? Use 10% scrap value $45,000 35,000 40,000 38,888
16. The quantity of arch masonry work is calculated by the relation: Span of arch x breadth of wall x thickness of arch (Span of arch 2 x thickness of arch) x breadth of wall (Span of arch 2 x breadth of wall) x thickness of arch Mean length of arch x breadth of wall x thickness of arch
17. The work output of a mason for brick work in cement mortar for foundation work is roughly expected to be 0.5 cu.m. per day 1.25 cu.m per day 2.00 cU.m. per day 5.00 cU.m. per day
18. Security deposit deducted at from contractors bills is refunded when the contractor completes the work. refunded even before the completion of the work provided good progress has been established retained till the expected life of structure and spent for maintenance refunded when the defect liability period of six months or one monsoon whichever is later is over.
19. Which of the following documents will not be required for drafting the tender notice? Nature of work and its location Estimated cost of the work Schedule of the work Mode of submitting tender
20. The rate of a particular item of work depends on Specifications of works and materials.
Quantities of materials and their rates.
Location of the site of work.
Profit and overhead expenses of contractor.
Answer options and only and and
21. The brick work is not measured in m3 in case of One or more than one brick thick wall. Half brick thick wall. Brick work in arches. Reinforced brick work.
22. The method used for valuation of building is Rental method of valuation Depreciation method of valuation Valuation based upon cost Any of the above
23. Which of the following represents the requirements of valid contract It must be in writing Can be enforced in court of law Parties should give the consent for agreement Parties concerned must be competent
Answer options and of the above and of the above and of the above and of the above
24. Find the specific gravity of soil grains with the help of a pycnometer if, weight of solids =100 weight of pycnometer soil water =610 weight of pycnometer water 550 g. 2.40 2.50 2.60 2.70
25. The active earth pressure for 10 m high retaining wall supporting a cohesionless backfill with unit weight of 19.0 kN/m3 and angle of frictional resistance as if water table is up to top of wall, is (Consider unit weight of water 10 kN/m3) 330 kN/m 1326 kN/m 166.67 kN/m 650 kN/m
26. Cofferdam is a type of earthen dam for storage of water type of bridge foundation temporary enclosure in a river to create dry working area during construction permanent structure to store water during floods
27. Compactive energy used for modified proctor test is how many times the compactive energy used in standard proctor test: 2.5' 3.5' 4.5' 5.5'
28. In the method of slices used for analysing the stability of slopes; each slice is assumed to be rectangular with a base in the shape of Straight line Log spiral Arc of circle Parabolic arc
29. The critical height of vertical excavation that can be made without any lateral support for a cohesive soil having unit weight of 19.2 kN/m3, unit cohesion as 12 kN/m2 and is 1.49 m 2.98 m 4.47 m 5.96 m
30. A footing of 4m x 2m in plan, transmit a pressure of 200 kN/m2 on a cohesive soil having 6 X 104 kN/m2 and J..L 0.5. The immediate settlement of the footing at the centre assuming rigid footing and If 1.2, is 5 mrn 6 mm 12 mm 10 mm
31. During ocdometer tests on soils, the permeability of a saturated clay may be obtained from: Voids ratio with the change in applied load.
Voids ratio with the change in logarithm of the applied load.
Unit weight of water and degree of consolidation.
Unit weight of water and coefficient of consolidation.
Which of the following options is correct: Both and Both and Both and Both and
32. If saturated day mass is sheared with normal stress of 220 kPa and pure water pressure of 120 kPa, the result gives C 12 kPa and =45°. The shear strength in terms of effective stress is 139 kPa 697 81.28 kPa 112 kPa
33. The water content corresponding to maximum density is Optimum water content Maximum water content Least water content Zero water content
34. Coefficient of discharge for an orifice is of coefficient of velocity and coefficient of contraction. an addition a difference a product a ratio
35. Reciprocating pump belongs to which of the following types? Rotary pump Propeller pump Mixed flow pump Displacement pump
36. For incompressible fluids in which of the follOwing cases hydrostatic pressure remains constant? along horizontal plane along vertical plane along both horizontal and vertical planes along inclined plane making an angle of 45° with the horizontal
37. In which of the following cases streamline, streak line and path line will coincide with e2ch other ?
Steady flow
Unsteady flow
Laminar flow
Turbulent flow
38. For steady uniform flow in prismatic channel, which of the following statements is true? Slope of energy line is more than slope of channel bed Slope of energy line is same as slope of channel bed Slope of energy line is more than slope of free surface Slope of energy line is more than slope of channel bed but less than slope of free surface.
39. Which of the following terms are used to indicate vertical distance between energy grade line and hydraulic grade line at any point of flow at given section: Piezometric head
(2)Velocity head Elevation head Total head
40. Which of the following is the cause for separation of boundary layer? Positive pressure gradient Negative pressure gradient Boundary layer thickness reducing to zero Laminar flow changing to turbulent flow
41. Bernoullis equation in it's original form is applicable to which of the following types of flow? flow along a streamline flow of an ideal fluid steady flow all the above
42. Which of the following is correct dimension for dynamic viscosity? ML-1T-l MLT-1
ML2T-10
(4) ML-1T-2
43. Newtonian fluids satisfy which of the following equations <img src='./qimages/4450-43.jpg'> 44. If the maximum depth of 50 years 10 h -rainfall depth at Nanded is 150 mm, the 50 years 4 h maximum depth at the same place is 150 mm 150 mm 150 mm Inadequate data
45. A culvert is designed for a peak flow Qp on the basis of the rational formula. If a storm of the same intensity as used in the design but of duration twice larger occurs, the resulting peak discharge will be Qp 2Qp Qp/2 (QP)2
46. A unit hydrograph has One unit of peak discharge One unit of rainfall duration One unit of direct runoff One unit of the time base of direct runoff
47. The Muskingum method of flood routing is a hydrologic channel routing method form of reservoir routing method hydraulic routing method complete numerical solution of St. Venant equations
48. Surcharge storage in a reservoir is the volume of storage between: minimum pool level and normal pool level normal and maximum pool level dead storage level and maximum storage level minimum and average pool level SPACE FOR ROUGH WORK
49. In routing a flood through a reach, the point of intersection of inflow and outflow hydrographs coincides with the peak of out flow hydrograph in all the G1SeS of flood routing when the inflow is into a reservoir with an uncontrolled outlet in channel routing only in all cases of reservoir routing
50. The discharge per unit drawdown at a well is known as SpecHic yield Specific storage Safe yield None of these
51. If Sy specific yield and SR specific retention, then: <img src='./qimages/4450-51.jpg'> 52. An acquifer confined at the bottom but not at the top is called: Semiconfined acquifer Unconfined acquifer Confined acquifer
(4) Perched acquifer
53. The use of the unit hydrograph for estimating floods is limited to catchments of sil'e less 5000 km2 500 km2 104 KM2
(4) no upper limit.
54. Darcy's law is valid in a porous media flow if the Reynolds number is less than unity. This Reynolds number is obtained by (discharge velocity x maximum grain size)/u
(actual velocity x average grain size)/u
(discharge velocity x average grain size)/u
(discharge velocity x pore size)/u
55. An isochrone is a line on the basin map: than:
Joining raingauge stations with equal rainfall duration Joining points having equal standard time Connecting points having equal time of travel of the surface run off to the catchment outlet That connects points of equal rainfall depth in a given time interval
56. According to Dr. Khosla's theory, the exit gradient in the absence of a downstream cut off is zero infinity unity very large
57. Uplift pressure on the dam: virtually increases the downward weight of the body of the dam increases the stability of dam virtually decreases the downward weight of the body of the dam has no effect on the stability of dam
58. Spillway is a structure constructed at a dam site for: effectively disposing of dead storage for drinking water effectively disposing of surplus water on downstream side effectively disposing of water in canal for irrigation storage of surplus water during floods SPACE FOR ROUGH WORK
59. What does an earthquake acceleration of 0.15 g acting vertically downward in a gravity dam cause 7 an increase in the weight of dam by 15% reduction in unit weight of concrete only by 15% decrease in unit weight of concrete and water by 15% increase 1n uplift pressure by 15%
60. Elementary profile of a gravity darn will be right-angled triangle having zero width at the water level and a base width at bottom: when subjected to water pressure on upstream side only when subjected to water pressure and silt pressure When subjected to silt pressure on upstream side only When subjected to lee pressure on upstream side only
61. The meander ratio is the ratio of: the length of the rIver channel to the axial length of the river the axial length of the river to the length of the river channel the meander length to the meander belt the meander belt to the meander length
62. The following data is available for a cross drainage project:
Parameter Canal Drainage
FSL(m) 110 109
Bedlevel 105 107
Discharge 90 15
The most appropriate cross drainage work for this situation is syphon aqueduct syphon super passage aqueduct
63. At the base of a gravity dam section, the vertical stress at the toe is 4 MPa. The slope of downstream face of dam is 0.707 horizontal: 1 vertical. If there is no tail water, the major principal stress at the toe is 4 MPa 5 MPa 6 MPa 8 MPa
64. In a solid-roller bucket type energy dissipator, the energy dissipation is due to formation of a hydraulic jump. due to interaction of free jet with air and due to impact on downstream channel bed. due to interaction of two complementary rollers. due to lateral spreading of the jet and partly due to interaction of two rollers.
65. Identify the correct statements: The ski-jump energy dissipator is used usually when:
the tail water level is too low for hydraulic jump to form the bed of the stream is of sound rock the erosion from the jet is not a problem for the safety of the structure there is considerable air entrainment of the flow by the time it reaches the bucket
Answer options and and and and
66. The perimeter of a regime channel having width B and depth D is <img src='./qimages/4450-66.jpg'> 67. Groynes are constructed to control the river flood protect the bank from which they are extended permIt the construction in flowing river ensure effective disposal of sediment load
68. In a saddle -siphon spillway, an air vent is provided at the level of the full reservoir surface: to break the siphonic action at that level. to initiate the siphonic action at that level. to prevent cavitation. to maintain ventilation inside the siphon.
69. PIEV theory is related to Accident study Pavement design Sight distance study Origin and Destination study
70. Specific gravity of pure bitumen is in the range of 1.10 to 1.25 1.25 to 1.40 0.97 to 1.02 Less than 1.0
71. Super elevation to be provided in horizontal curves of radius R in hill roads is given by V2/17.5 R V2/225R 8)2/127R
72. Organisations/ Institutions involved with Road Development in India are: NHAI, IRC, BRO NHAI, IRC, Bel IRC, HRB, BCI NHAI, HRB, BCI
73. IRC has fixed the maximum limit of super elevation for mixed traffic in plain and rolling terrain as 10%
74. In hot climates, bitumen of what penetration grade is preferred? 80/100 60/70 30/40 None of the above
75. Pavements of major roads should be designed for atleast a life period of 5 years 10 years 20 years 30 years
76. In flexible pavement design by Group Index method, for constant value of traffic volume, higher the value of G.I pavement thickness requirement would be More Less Same None of the above
77. The centrifugal force is acting on a vehicle negotiating a Railway track crossing River crossing Vertical curve Horizontal curve SPACE FOR ROUGH WORK
78. Origin and Destination studies are carried out for: Planning of road network for vehicular traffic Accident studies Pavement Design Geometric Design
79. The minimum stopping sight distance on single lane roads with two -way traffic movements is 2 x SSD 0.5 x SSD 4 x SSD equal to SSD
80. On a right angled road intersection with two -way traffic, the total number of conflict points are: 24 11 6 4
81. Approach on either side of a bridge will have a minimum straight length of: 5mt 15mt 50mt 150rot
82. The selection of site for road bridges depends on Nature of river banks and appropriate arches Width and depth of river at site to be bridged Availability of good and safe foundation for bridge All of the above
83. In class 70 loading, the minimum spacing between vehicles is 30m 40 m 60 m 70m
84. A temporary enclosure built to exclude water from the working area and to provide free access to the area within, during the construction of a foundation or other structures that may be undertaken below water level is known as Shell Cofferdam Caissions Any of the above
85. When is the span of the bridge economic When the cost of supporting system of one span is equal to cost of one pier When the cost of supporting system of one span is equal to cost of one abutment When the cost of one pier is equal to half the cost of abutment When the cost of supporting system of one span is equal to twice the cost of pier
86. The stream at the ideal bridge site should be Well defined and as deep as possible Well defined and as wide as possible Well defined and as narrow as possible Deep and as wide as possible
87. The small submersible bridge having no openings is known as Cause way Dead end bridge Irish bridge Either or
88. Suspension bridges are: Movable bridges Suitable for long spans Suitable for short spans Used over navigable channels SPACE FOR ROUGH WORK A 21 K02
89. The wall which is a splayed called extension of an abutment of a slope of the embankment is Retaining wall Parapet wall Support wall Wing wall
90. Strengthening of bridges is done for: Safety against earthquake Safety during floods Old bridges
(4) Newly constructed bridges
91.
Match List I (Method of disposal) with List II (Terms related to method)
List I List II Sanitary land fill High operational and maintenance cost Incineration Leachate collection and treatment Composting (iii) Pre-sorting, grinding and turning Salvage by seggregation Suitable for recyclable wastes
(1
92. Time of concentration is relevant to determine the design of Storm sewer Sanitary sewer Both storm and sanitary sewers Neither storm sewer nor sanitary sewer
93. The relation between BOD and COD IS BOD is always less than COD. BOD is greater than COD. BOD is equal to COD. There is no relation between BOD and COD.
94. Which of the following are the methods of treatment and disposal of biomedical waste? Hydroclave method Autoclave method Incineration All the above
95. What is the typical moisture content range of Municipal Solid Waste for Indian conditions 25 to 40% 45 to 60% 62 to 70% 5 to 15%
96. Which one of the following methods can be employed for solid waste excluding garbage? Composting Incineration Engineered land fill Pyrolysis
97. Assertion If the intake is to be located on the curve, it should be located on the concave bank and not on the convex bank.
Reasoning The scouring tendencies will be more on the convex bank of the river Select the answer from the following: Both and are correct and is the correct explanation of Both and are correct but is not the correct explanation of is true but is false. is false but is true.
98. What is the treatment for removal of color due to colloidal organic matter: Aeration Primary sedimentation Co-agulation at low pH with alum salts All the above
99. In London Smog episode, which was the responsible pollutant? Carbon monoxide Oxides of Nitrogen Sulphur dioxide Ozone
100. Which of the following statements are not correct in relation to water distributi01: system? Tree system requires more number of valves and length of pipe. Reticulation system has multiple flow paths and pressures are equalised. Hardy-Cross method is used to analyze both tree and reticulation systems.
Answer options and and and and
2. when 1. denotes the Latitudes and D denotes the departures, then the closing error is given by: <img src='./qimages/4450-2.jpg'> 3. The line through a point in which plane passing through that point and the north and south poles, intersects with the surface of the earth is known as :
True bearing
True Meridian
Arbitrarv meridian
(4)None of the above
4. The chainages of point of curvature and point of tangency of a simple circular curve are 1050.50 m and 1314.90 m respectively. The number of full chords for a peg interval of 30 m will be
(3)6
(4)9
5. In plane table survey the method used for locating points is Resection
(2) Radiation Intersection Either Radiation or Intersection
6. which of the following statement are correct An echo -sounder is also called as a fathometer.
A self -registering gauge should be installed in open.
An echo sounder can be used in strong currents.
Answer options
and
and
and
7. Overturning of a vehicle on a curve can be avoided by using: Transition curve Vertical curve Reverse curve Compound curve
8. Least count of a theodolite is 1 minute 30 minutes 1 degree 20 seconds
9. If the magnetic bearing of a line is 54°30' and magnetic declination is the true bearing of line will be 6r 59° 49° 60°
10. The process of determining the difference of elevations of stations from vertical angles and known distances, is known as Trigonometrical levelling Geodetic surveying Field astronomy Topographic surveying
11. The method of tacheometric surveying in which stadia hairs are not used and the readings are taken against the horizontal cross hair with measurement of vertical angle twice for one single observation is known as Substance method Tangential system Fixed hair method None of the above
12. Arithmatic check in levelling indicates: Accuracy of field work Correctness of computations Instrumental error Error in staff readings
13. In Global Positioning System (G.P.5.) there are more than 24 Nos. of G.P.5. Satellites moving in circular orbits around the earth with the inclination of 65 35 45 55
14. For building project estimates which method is generally used in PWD Long wall and Short wall method Centre line method Crossing method
(4) None of the above
15. A building was constructed 20 years ago at 50,000. The estimated life of the building is 90 years. What is the present value of the building using straight -line method? Use 10% scrap value $45,000 35,000 40,000 38,888
16. The quantity of arch masonry work is calculated by the relation: Span of arch x breadth of wall x thickness of arch (Span of arch 2 x thickness of arch) x breadth of wall (Span of arch 2 x breadth of wall) x thickness of arch Mean length of arch x breadth of wall x thickness of arch
17. The work output of a mason for brick work in cement mortar for foundation work is roughly expected to be 0.5 cu.m. per day 1.25 cu.m per day 2.00 cU.m. per day 5.00 cU.m. per day
18. Security deposit deducted at from contractors bills is refunded when the contractor completes the work. refunded even before the completion of the work provided good progress has been established retained till the expected life of structure and spent for maintenance refunded when the defect liability period of six months or one monsoon whichever is later is over.
19. Which of the following documents will not be required for drafting the tender notice? Nature of work and its location Estimated cost of the work Schedule of the work Mode of submitting tender
20. The rate of a particular item of work depends on Specifications of works and materials.
Quantities of materials and their rates.
Location of the site of work.
Profit and overhead expenses of contractor.
Answer options and only and and
21. The brick work is not measured in m3 in case of One or more than one brick thick wall. Half brick thick wall. Brick work in arches. Reinforced brick work.
22. The method used for valuation of building is Rental method of valuation Depreciation method of valuation Valuation based upon cost Any of the above
23. Which of the following represents the requirements of valid contract It must be in writing Can be enforced in court of law Parties should give the consent for agreement Parties concerned must be competent
Answer options and of the above and of the above and of the above and of the above
24. Find the specific gravity of soil grains with the help of a pycnometer if, weight of solids =100 weight of pycnometer soil water =610 weight of pycnometer water 550 g. 2.40 2.50 2.60 2.70
25. The active earth pressure for 10 m high retaining wall supporting a cohesionless backfill with unit weight of 19.0 kN/m3 and angle of frictional resistance as if water table is up to top of wall, is (Consider unit weight of water 10 kN/m3) 330 kN/m 1326 kN/m 166.67 kN/m 650 kN/m
26. Cofferdam is a type of earthen dam for storage of water type of bridge foundation temporary enclosure in a river to create dry working area during construction permanent structure to store water during floods
27. Compactive energy used for modified proctor test is how many times the compactive energy used in standard proctor test: 2.5' 3.5' 4.5' 5.5'
28. In the method of slices used for analysing the stability of slopes; each slice is assumed to be rectangular with a base in the shape of Straight line Log spiral Arc of circle Parabolic arc
29. The critical height of vertical excavation that can be made without any lateral support for a cohesive soil having unit weight of 19.2 kN/m3, unit cohesion as 12 kN/m2 and is 1.49 m 2.98 m 4.47 m 5.96 m
30. A footing of 4m x 2m in plan, transmit a pressure of 200 kN/m2 on a cohesive soil having 6 X 104 kN/m2 and J..L 0.5. The immediate settlement of the footing at the centre assuming rigid footing and If 1.2, is 5 mrn 6 mm 12 mm 10 mm
31. During ocdometer tests on soils, the permeability of a saturated clay may be obtained from: Voids ratio with the change in applied load.
Voids ratio with the change in logarithm of the applied load.
Unit weight of water and degree of consolidation.
Unit weight of water and coefficient of consolidation.
Which of the following options is correct: Both and Both and Both and Both and
32. If saturated day mass is sheared with normal stress of 220 kPa and pure water pressure of 120 kPa, the result gives C 12 kPa and =45°. The shear strength in terms of effective stress is 139 kPa 697 81.28 kPa 112 kPa
33. The water content corresponding to maximum density is Optimum water content Maximum water content Least water content Zero water content
34. Coefficient of discharge for an orifice is of coefficient of velocity and coefficient of contraction. an addition a difference a product a ratio
35. Reciprocating pump belongs to which of the following types? Rotary pump Propeller pump Mixed flow pump Displacement pump
36. For incompressible fluids in which of the follOwing cases hydrostatic pressure remains constant? along horizontal plane along vertical plane along both horizontal and vertical planes along inclined plane making an angle of 45° with the horizontal
37. In which of the following cases streamline, streak line and path line will coincide with e2ch other ?
Steady flow
Unsteady flow
Laminar flow
Turbulent flow
38. For steady uniform flow in prismatic channel, which of the following statements is true? Slope of energy line is more than slope of channel bed Slope of energy line is same as slope of channel bed Slope of energy line is more than slope of free surface Slope of energy line is more than slope of channel bed but less than slope of free surface.
39. Which of the following terms are used to indicate vertical distance between energy grade line and hydraulic grade line at any point of flow at given section: Piezometric head
(2)Velocity head Elevation head Total head
40. Which of the following is the cause for separation of boundary layer? Positive pressure gradient Negative pressure gradient Boundary layer thickness reducing to zero Laminar flow changing to turbulent flow
41. Bernoullis equation in it's original form is applicable to which of the following types of flow? flow along a streamline flow of an ideal fluid steady flow all the above
42. Which of the following is correct dimension for dynamic viscosity? ML-1T-l MLT-1
ML2T-10
(4) ML-1T-2
43. Newtonian fluids satisfy which of the following equations <img src='./qimages/4450-43.jpg'> 44. If the maximum depth of 50 years 10 h -rainfall depth at Nanded is 150 mm, the 50 years 4 h maximum depth at the same place is 150 mm 150 mm 150 mm Inadequate data
45. A culvert is designed for a peak flow Qp on the basis of the rational formula. If a storm of the same intensity as used in the design but of duration twice larger occurs, the resulting peak discharge will be Qp 2Qp Qp/2 (QP)2
46. A unit hydrograph has One unit of peak discharge One unit of rainfall duration One unit of direct runoff One unit of the time base of direct runoff
47. The Muskingum method of flood routing is a hydrologic channel routing method form of reservoir routing method hydraulic routing method complete numerical solution of St. Venant equations
48. Surcharge storage in a reservoir is the volume of storage between: minimum pool level and normal pool level normal and maximum pool level dead storage level and maximum storage level minimum and average pool level SPACE FOR ROUGH WORK
49. In routing a flood through a reach, the point of intersection of inflow and outflow hydrographs coincides with the peak of out flow hydrograph in all the G1SeS of flood routing when the inflow is into a reservoir with an uncontrolled outlet in channel routing only in all cases of reservoir routing
50. The discharge per unit drawdown at a well is known as SpecHic yield Specific storage Safe yield None of these
51. If Sy specific yield and SR specific retention, then: <img src='./qimages/4450-51.jpg'> 52. An acquifer confined at the bottom but not at the top is called: Semiconfined acquifer Unconfined acquifer Confined acquifer
(4) Perched acquifer
53. The use of the unit hydrograph for estimating floods is limited to catchments of sil'e less 5000 km2 500 km2 104 KM2
(4) no upper limit.
54. Darcy's law is valid in a porous media flow if the Reynolds number is less than unity. This Reynolds number is obtained by (discharge velocity x maximum grain size)/u
(actual velocity x average grain size)/u
(discharge velocity x average grain size)/u
(discharge velocity x pore size)/u
55. An isochrone is a line on the basin map: than:
Joining raingauge stations with equal rainfall duration Joining points having equal standard time Connecting points having equal time of travel of the surface run off to the catchment outlet That connects points of equal rainfall depth in a given time interval
56. According to Dr. Khosla's theory, the exit gradient in the absence of a downstream cut off is zero infinity unity very large
57. Uplift pressure on the dam: virtually increases the downward weight of the body of the dam increases the stability of dam virtually decreases the downward weight of the body of the dam has no effect on the stability of dam
58. Spillway is a structure constructed at a dam site for: effectively disposing of dead storage for drinking water effectively disposing of surplus water on downstream side effectively disposing of water in canal for irrigation storage of surplus water during floods SPACE FOR ROUGH WORK
59. What does an earthquake acceleration of 0.15 g acting vertically downward in a gravity dam cause 7 an increase in the weight of dam by 15% reduction in unit weight of concrete only by 15% decrease in unit weight of concrete and water by 15% increase 1n uplift pressure by 15%
60. Elementary profile of a gravity darn will be right-angled triangle having zero width at the water level and a base width at bottom: when subjected to water pressure on upstream side only when subjected to water pressure and silt pressure When subjected to silt pressure on upstream side only When subjected to lee pressure on upstream side only
61. The meander ratio is the ratio of: the length of the rIver channel to the axial length of the river the axial length of the river to the length of the river channel the meander length to the meander belt the meander belt to the meander length
62. The following data is available for a cross drainage project:
Parameter Canal Drainage
FSL(m) 110 109
Bedlevel 105 107
Discharge 90 15
The most appropriate cross drainage work for this situation is syphon aqueduct syphon super passage aqueduct
63. At the base of a gravity dam section, the vertical stress at the toe is 4 MPa. The slope of downstream face of dam is 0.707 horizontal: 1 vertical. If there is no tail water, the major principal stress at the toe is 4 MPa 5 MPa 6 MPa 8 MPa
64. In a solid-roller bucket type energy dissipator, the energy dissipation is due to formation of a hydraulic jump. due to interaction of free jet with air and due to impact on downstream channel bed. due to interaction of two complementary rollers. due to lateral spreading of the jet and partly due to interaction of two rollers.
65. Identify the correct statements: The ski-jump energy dissipator is used usually when:
the tail water level is too low for hydraulic jump to form the bed of the stream is of sound rock the erosion from the jet is not a problem for the safety of the structure there is considerable air entrainment of the flow by the time it reaches the bucket
Answer options and and and and
66. The perimeter of a regime channel having width B and depth D is <img src='./qimages/4450-66.jpg'> 67. Groynes are constructed to control the river flood protect the bank from which they are extended permIt the construction in flowing river ensure effective disposal of sediment load
68. In a saddle -siphon spillway, an air vent is provided at the level of the full reservoir surface: to break the siphonic action at that level. to initiate the siphonic action at that level. to prevent cavitation. to maintain ventilation inside the siphon.
69. PIEV theory is related to Accident study Pavement design Sight distance study Origin and Destination study
70. Specific gravity of pure bitumen is in the range of 1.10 to 1.25 1.25 to 1.40 0.97 to 1.02 Less than 1.0
71. Super elevation to be provided in horizontal curves of radius R in hill roads is given by V2/17.5 R V2/225R 8)2/127R
72. Organisations/ Institutions involved with Road Development in India are: NHAI, IRC, BRO NHAI, IRC, Bel IRC, HRB, BCI NHAI, HRB, BCI
73. IRC has fixed the maximum limit of super elevation for mixed traffic in plain and rolling terrain as 10%
74. In hot climates, bitumen of what penetration grade is preferred? 80/100 60/70 30/40 None of the above
75. Pavements of major roads should be designed for atleast a life period of 5 years 10 years 20 years 30 years
76. In flexible pavement design by Group Index method, for constant value of traffic volume, higher the value of G.I pavement thickness requirement would be More Less Same None of the above
77. The centrifugal force is acting on a vehicle negotiating a Railway track crossing River crossing Vertical curve Horizontal curve SPACE FOR ROUGH WORK
78. Origin and Destination studies are carried out for: Planning of road network for vehicular traffic Accident studies Pavement Design Geometric Design
79. The minimum stopping sight distance on single lane roads with two -way traffic movements is 2 x SSD 0.5 x SSD 4 x SSD equal to SSD
80. On a right angled road intersection with two -way traffic, the total number of conflict points are: 24 11 6 4
81. Approach on either side of a bridge will have a minimum straight length of: 5mt 15mt 50mt 150rot
82. The selection of site for road bridges depends on Nature of river banks and appropriate arches Width and depth of river at site to be bridged Availability of good and safe foundation for bridge All of the above
83. In class 70 loading, the minimum spacing between vehicles is 30m 40 m 60 m 70m
84. A temporary enclosure built to exclude water from the working area and to provide free access to the area within, during the construction of a foundation or other structures that may be undertaken below water level is known as Shell Cofferdam Caissions Any of the above
85. When is the span of the bridge economic When the cost of supporting system of one span is equal to cost of one pier When the cost of supporting system of one span is equal to cost of one abutment When the cost of one pier is equal to half the cost of abutment When the cost of supporting system of one span is equal to twice the cost of pier
86. The stream at the ideal bridge site should be Well defined and as deep as possible Well defined and as wide as possible Well defined and as narrow as possible Deep and as wide as possible
87. The small submersible bridge having no openings is known as Cause way Dead end bridge Irish bridge Either or
88. Suspension bridges are: Movable bridges Suitable for long spans Suitable for short spans Used over navigable channels SPACE FOR ROUGH WORK A 21 K02
89. The wall which is a splayed called extension of an abutment of a slope of the embankment is Retaining wall Parapet wall Support wall Wing wall
90. Strengthening of bridges is done for: Safety against earthquake Safety during floods Old bridges
(4) Newly constructed bridges
91.
Match List I (Method of disposal) with List II (Terms related to method)
List I List II Sanitary land fill High operational and maintenance cost Incineration Leachate collection and treatment Composting (iii) Pre-sorting, grinding and turning Salvage by seggregation Suitable for recyclable wastes
(1
92. Time of concentration is relevant to determine the design of Storm sewer Sanitary sewer Both storm and sanitary sewers Neither storm sewer nor sanitary sewer
93. The relation between BOD and COD IS BOD is always less than COD. BOD is greater than COD. BOD is equal to COD. There is no relation between BOD and COD.
94. Which of the following are the methods of treatment and disposal of biomedical waste? Hydroclave method Autoclave method Incineration All the above
95. What is the typical moisture content range of Municipal Solid Waste for Indian conditions 25 to 40% 45 to 60% 62 to 70% 5 to 15%
96. Which one of the following methods can be employed for solid waste excluding garbage? Composting Incineration Engineered land fill Pyrolysis
97. Assertion If the intake is to be located on the curve, it should be located on the concave bank and not on the convex bank.
Reasoning The scouring tendencies will be more on the convex bank of the river Select the answer from the following: Both and are correct and is the correct explanation of Both and are correct but is not the correct explanation of is true but is false. is false but is true.
98. What is the treatment for removal of color due to colloidal organic matter: Aeration Primary sedimentation Co-agulation at low pH with alum salts All the above
99. In London Smog episode, which was the responsible pollutant? Carbon monoxide Oxides of Nitrogen Sulphur dioxide Ozone
100. Which of the following statements are not correct in relation to water distributi01: system? Tree system requires more number of valves and length of pipe. Reticulation system has multiple flow paths and pressures are equalised. Hardy-Cross method is used to analyze both tree and reticulation systems.
Answer options and and and and