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142/2015

Maximum: 100 marks Time: 1 hour and 15 minutes
1. Black cotton soils have:

High Plasticity Low plasticity


Good shear strength Highly incompressible


2. The term in soil formation relates to

Deposits made by glaciers


Deposits formed by melting of glaciers


Lateral movement of soil


Fissures formed in lateritic rocks


3. Degree of saturation of soil refers to

Ratio of the volume of voids to the 'volume of soil


Ratio of the volume of water to the volume of voids


Ratio of the volume of water to the volume of soil


Ratio of weight of water to the weight of solids


4. For a soil with specific gravity 2.6 and dry unit weight of 20 KN/m3 (unit weight cif water 10 KN/m3) the void ratio will be

0.7 0.52


0.769 0.3


5. If 60% of a soil sample is finer than 0.06 mm and 10% of it is finer than 0.004 mm, its uniformity coefficient will be
0.0667 1.5
15 0.00024
6. . A soil with a consistency index of zero indicates that:

Soil is at the liquid limit Soil attained its plastic limit


Soil is hard Soil has good shear strength


7. If the effective grain size of a soil is 0.2 mm and Allen Hazen's C is 15, its coefficient of permeability is

0.30 mm/sec 0.60 mm/sec


0.3 em/sec 0.6 em/sec


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8. The normal stress and shear stress on a failure plane in a drained test on a cohesion less soil are l.Okglcm2 each, the angle that the failure plane makes with the major principal plane will be:

900 450


22.50 67.50


9. Which of the following statement is wrong?

In cantilever retaining walls, the stem acts as a vertical cantilever; whereas in counterfort retaining walls it act as a continuous slab


Weep holes are provided in the retaining walls to reduce the development of excessive lateral pressure on the walls


Fine graded soils are usually recommended as a backfill material as it reduces the pressure against retaining walls


The basic difference between counterfort and cantilever retaining walls is in the calculation of bending moment and shear force


10. Which of the following statements is TRUE?

The depth of exploration required at a particular site is mainly governed by the depth of the influencing zone


Auger bring is recommended where depth of sampling is high


Wash boring is suitable for obtaining undisturbed samples above water table level


Undisturbed soil samples are used to determine the index properties of soil like grain size, plasticity characteristics etc


11. 'The maximum rate at which a soil in any given condition is capable of absorbing water' is termed as:

Infiltration rate Infiltration capacity


Absorption capacity Sorption rate


12. 'Capillary fringe' refers to

Zone just above the water table where moisture content is maintained by capillarity


Zone just below the water table where moisture content IS maintained by percolation


Zone below the soil moisture zone


Zone just below the sub-surface where moisture content IS maintained by infiltration


13. The plotting of linear form of standard infiltration capacity curve represents a straight line with a slope equal to
10gJOe] logJOe]
JO JO
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14. Most of the heavy rains in India are due to

Thunderstorms Orographic precipitation


Convective precipitation Cyclonic precipitation



15. The relation between the optimum number of rain-guage stations Allowable percentage error in the calculation of mean rainfall and the coefficient of variation of rainfall is

N2 C2E2 N2E2 C2


N CE C2


16. The rates of rainfall for a successive 20 min period of a 60 minute rain are 2.5, and 10 cm/hr respectively. If the rainfall volume equals runoff volume above 2.5 cm/hr, the runoff will be:

10/3 cm 20/3 cm


10/6 cm None of the above


17. The recession limb of a hydrograph indicates:

Greater possibility for infiltration/runoff


Surface detention and interception during a rain


Uniformity of the rain


Withdrawal of water from the storage within the basin


18. A unit hydrograph of a basin is defined as a hydrograph of direct runoff resulting from a rainfall excess of
1mm 1 cm
3
1cm3 1 mm
19. If a 6 h unit hydrograph is added to the same 6 h unit hydrograph beginning 6 h later, this can be reduced to a 12 h unit hydrograph by dividing the ordinates by
6 12
2 3
20. In stream routing, the peak outflow discharge occurs:

Later than the time when two hydrographs cross


Earlier than the time when two hydrographs cross


At the time when two hydrographs cross


None of the above


21. The distance between two points measured with a 30 m chain was recorded as 100 m. It was afterwards found that the chain was 10 cm too short. So, the true distance between the points will be:

99.666 m 100,333 m


100 ±0.333 m None of the above


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22. Which of the following statement is FALSE? CA) Correction for sag is always negative

Correction for slope is always negative
CC) Correction for pull can be positive or negative



Correction for temperature is positive if the temperature during measurement is less than the standard temperature


23.
A survey line is 100 m long and has a bearing of 210°. The departure of this survey line is CA) 50.000 m -50.000 m CC) 86.602 m CD) -86.602 m

24.
IfAB is at S 30° W and AC is N 30° the included angle BAC will be CA) 120° 60° CC) 240° CD) None of the above

25.
'Orientation' of a plane table refers to the process of: CA) Keeping the plane table at successive stations facing the first station

Keeping the plane table along NS direction CC) Keeping the plane table parallel to the position it occupied at previous station CD) Keeping the plane table parallel to the base survey line

26.
A person 1.684 m tall stands on a beach. The maximum distance visible to him towards the sea will be:

CA) 5m 25km
CC) 5km CD) 25m


27.
The least reading that can be taken with the help of a leveling staff is: CA) 0.005 m 0.005 cm CC) 0.05 m CD) None

28.
If AI, A2, A3, A4 and A5 represent the areas of cross-sections of an embankment at a distance ofD between them, the Prismoidal formula for calculating its volume will be:

CA) D/3[A1 2A2+ 4A3 2A4 D/3[A1 4A2 2A3+ 4A4
CC) D/2[A1 +2A2 4A3 2A4+A5] CD) D/2[A1 4A2+2A3 4A4 A5]


29.
The prismoidal correction for a level section with depths of cutting and at a distance of apart with side slopes's' and will be


CA) Dsl3[h-Hf Dsl3
CC) Dsl6[h-Hf CD) Dsl6 +Hf
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30. If the area included within 450 453 m and 456 m contour lines of a reservoir are respectively 250 sq.m and 750 sq.m, the volume of water (by trapezoidal formula) will be

450000 cu.m 225000 cU.m


1000 cU.m 1500 CU.m


31. Ajet of water strikes a flat plate with a velocity of20 mls inclined at 30° with the axis of the jet. If the cross-sectional area of the jet is 50 and density of water is 1000 kg/cu.m, the force exerted by the jet on the plane will be

1732.05 N 866.002 N


500 N 1000 N


32. For maximum efficiency of the vanes, the peripheral speed should be

114th of the velocity of jet Half of the velocity ofjet


Equal to the jet speed 0.6 times jet speed


33. A jet propelled boat moves at 20 mls with water being drawn from inlet openings facing the direction of motion. If the relative velocity of the jet is found to be 30 mis, its propulsion efficiency will be

80% 57.14%


40%


34. Which of the following statement is INCORRECT?

Modern Francis turbines are inward mixed flow reaction turbines


Francis turbines operates under medium heads and requires medium quantity of water


The head acting on the Francis turbine is fully transformed into kinetic energy leaving no pressure head


In Francis turbine, the difference of pressure between the guide vanes and the runner creates the reaction pressure


35. A turbine is to operate under a head of 16 m at 128 rpm. If the power generated is 625 kW, the specific speed of the turbine will be

400 rpm 2500 rpm


100 rpm None of the above


36. The impeller of a centrifugal pump has an internal diameter of 400 mm and it runs at 720 rpm. Ifthe constant radial flow through impeller is 1.51m/s, the inlet vane angle will be
185° 95°
45° 5°
37. The phenomenon of cavitation in centrifugal pumps can be reduced by

Reducing the suction head Increasing the suction .head


Altering the flow velocity Changing the discharge


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38. In the case of a centrifugal pump, the kinetic energy per unit weight of water is found to be 8 Nm and the work done per unit weight of water was 24 Nm. So the percentage of work converted into kinetic energy will be

66.67% 33.33%


30%


39. Cavitation begins to appear in centrifugal pumps when:

suction head equals delivery head


vapour pressure of liquid is less than suction pressure


the pressure at suction equals vapour pressure of liquid


the pressure at suction falls below the vapour pressure of liquid


40. The difference between the net inlet head and the head corresponding to the vapour pressure of the liquid in centrifugal pumps is called:

Net Primary Suction Head Negative Suction Head


Suction Head Net Positive Suction Head


41. The knocking tendency in CI engines increase with:

Increase of compression ratio


Decrease of compression ratio


Increasing the temperature of inlet air


None of the above


42. The phenomenon of evaporation from water surface, from the soil an from plant is generally known as:

Vaporization Boiling


Transpiration Hydration


43. Sprinkler irrigation is not suitable for:

nce wheat


plantation crops none of them


44. Subsurface drains are:

underground artificial channels free water drained from open well


artificial drains made over the earth none of these


45. The main function of distributor of ignition of system of engine is to

Open the primary circuit Close the primary circuit


Both None of the above


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46. A current meter measure, the velocity of flow, if it is held:

At the bottom surface of the channel At the surface of the channel


At the centroid of the channel section At any position with in the section


47. Selection and design of soil and water conservation measures mainly depend upon:

soil type land slope


rain fall all of them


48. Ditch cross section is usually:

rectangular square


round none of these


49. In air cooled engines fins are the components of:

Cooling system Ignition system


Fuel system None of the above


50. Infiltration occurs at capacity rate:

due to watershed leakage


ifthere had been antecedent rain fall


if the intensity of rain fall is lower than the capacity rate


during a first flash storm following summer


51. When a small irrigation canal has to cross over a median drain we construct:

pipe aqueduct box culvert


irrigation culvert aqueduct


52. Drainage coefficient is expressed as depth in water drained off from a given area in24hrs.

Metres Inch


Foot Centimetres


53. Lubrication causes the effects:

cooling effect


cleaning effect


reduced friction effect


sealing effect


54. Unit hydrograph method for flood estimation is usually applied to

Large basins Hilly areas


Small and medium sized basins All of the above


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55. Hydraulic structures constructed across a canal are called:

cross drainage works cross communication works


regulatory works none of the above


56. Vegetative water ways are designed to carry the maximum runoff from a storm recurrence intervaL

5 10


15 20


57. Specific heat at constant pressure

increases with increase in moisture content in air


decreases with increase in moisture content in air


remain same irrespective of the moisture content in air


none of the above


58. The shape of the hydrograph of run off is affected by

the duration of the storm a real distribution of the storm


the intensity of the storm all of the above


59. Coefficient of permeability indicates canal with which water can flow through a soil mass. The soil type which has least permeability is

gravelly soil clayey soil


sandy soil none of the above


60. In drop spillway the water flow through a falls over an apron in which energy of water dissipated.
Notch Conduit
Weir Outlet

61. The ratio of brake power to indicated power is called:

Mechanical efficiency Volumetric efficiency


Thermal efficiency None of the above


62. An aquifer that is confined at the bottom but not at the top is known as

Partially confined aquifer Unconfined aquifer


Semi confined aquifer Aquiclude


63. A lysimeter is used to measure:

infiltration evaporation


evapotranspiration radiation


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64. Flow in a chute spillway is at

about 2 metres sec 5.5 metres/sec


supercritical velocities none of these


65. The volume displaced by one stroke ofthe piston is known as

Piston displacement Piston speed


Both .None of the above


66. Soil is called saline when the pH value is

less than 4 7


more than 7 below 0


67. A channel designed by Lacey's theory has a mean velocity of one meter per seconli. The silt factor is unity. The hydraulic mean radius will be

1.5 meters 2.0 meters


2.5 meters 1.00 meter


68. Soil plant water relations relates to the----properties of soil, plant that affects the movement, retention and use of water.

chemical physical


agronomIc plant nutrient


69. For getting maximum power from petrol engine ,the air fuel ratio should be about:

15:1 1:10


1:15 1:13


70. Delta of a crop means:

area under the crop


crop period


depth of water required by the crop


crop production


71. Bunds are constructed for the purpose of:

retaining water controlling soil erosion


diverting runoff • all of them


72. In surface method ofirrigation water is applied directly from a pIpe channel drip head sprinkler
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73. A heat engine is defined as a device which converts:

one form of energy into useful work


heat energy into useful work


both


none of the above.


74. Hydrology deals with:

all aspects of water available on the earth


irrigation water requirements of crops


mechanics of motion of water


non available water for plants


75. Removal of a fairly uniform layer of soil from the field due to rainfall and runoff is known as

splash erosion sheet erosion


rill erosion gully erosion


76. In well system, the vertical distance to which the water column is lowered is referred to as

depression cone


radius of influence none of these


77. Fly wheel mainly works as

To start the engine Energy reservoir


To serve uniform running None of the above


78. The purpose of canal lining is to

control seepage strengthen canal section


increase capacity of the canal to serve all these


79. A plot of accumulated precipitation verse time in a chronological order is called:

Hyetograph Unit hydrograph


Mass curve Hydrograph


80. Drain tiles are made of

mild steel aluminium


concrete none of these


81. Name the social reformer associated with an agitation connected to the Tali temple In Kozhikode in 1917:

Narayana Guru T.K. Madhavan


C. Krishnan K. Kelappan


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82. Which was the social reform organisation ofthe Nairs founded in 1905?

Keraleeya Nair Samajam Nair Service Society


Malayali.Sabha None of the above


83. Who founded the organisation known as Kerala Muslim Aikya Sangham?

E. Moidu Moulavi Vakkom Abdul Khader Moulavi


Muhammad Abdur Rahiman Moideen Koya


84. Name the ruler of Travancore at the time of the beginning of the Vaikom Satyagraha:

Srimulam Thirunal Sethu Lakshmi Bai


Rani Gouri Parvatibai None of the above


85. Who among the following was manhandled during the Guruvayur satyagraha?

A.K Gopalan Mannath Padmanabhan


N.P. Damodaran K Kelappan


86. Name the leader who was punished for a speech at Kozhenchery in 1935
George Joseph P. Krishna Pilla E.V. Ramaswami Nair C. Kesavan
87. Who was the editor of the periodical Aikyam?

Hassan Koya Mulla Seethi sahib


Muhammed Abdur Rahiman None of the above


88. Who was the editor of Kerala patrika?

Chengalath Kunjirama Menon G.P. Pilla


K Ramakrishna Pilla KG. Sankar


89. Who wrote the poem 'Chitrasala'

Kumaran Asan Ulloor Parameswara Iyer


Vallattol Narayana Menon G. Sanakara Kurup


90. Who wrote the novel 'Sundarikalum Sundaranmarum'?

P.C. Kutti Krishnan Vaikom Muhammed Basheer


Thakazhi Sivasankara Pilla S.K Pottekkat


91. The well known writer Indira Goswami belonged to

Haryana Uttar pradesh


Assam West Bengal


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92. arne the capital of Kenya:

Cairo Amman


Nairobi Accra


93. India shares-----percent of the total geographical area in the world.

4.5% 2.5%


3.4% 2.4%


94. Name the historic personality who was known as Fuhrer:

Mussolini Churchill


l'litler Stalin


95. When is World Environment celebrated?

April22 March 23


June 5 December 10


96. When is world wetland day celebrated?

January 9 February 2


March 5 May 8


97. Who is the foreign secretary ofIndia?

Sujatha Singh Sanjaya Baru


S.Jayashankar T.P. Sreenivasan


98. Who is the defence minister of India?

Sushama Swaraj Manohar Parrikar


Rajnath Singh Nitin Gadkari


99. The terms socialist and secular were inserted to the Preamble of the Indian Constitution as per the 42nd Amendment in

1975 1976


1977 1979


100. Who is the President ofSri Lanka?

Rajapakse Sirisena


Chandrika Kumaratunga Sirimao Bandaranayake


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