D:Documents and SettingsOPSC-ITCELLDesktopOCS PRELIM LOLD QUESTION PAPERAGRIL ENGGagengg1.jpg
1. One of the most suitable puddling implement among following is

disk harrow rotary blade puddler


cultivator rotavator


Main objective of puddling is to

destroy weeds reduce water percolation losses


reduce seepage increase infiltration


3. Puddling index unit is

kglm3 N/m2


unit less m3/kg


4. In a precision planter height of seed drop

should be close to the ground level as possible


should be at least 100 mm from ground level


should be at least 200 mm from ground level


is not a factor to be considered


. 5. The most common seed metering device in wheat ferti seed driII is employed

fluted roller star wheel


fixed opening type plate internal double run type plate


I
6. Seed metering devices used in a maize planter is

internal double run type fluted roller type


inclined plate with cells fingers with cells


7. When the speed of tractor drawn seed drill is doubled the seed rate

is doubled· is halved


remains the same none of the above


8. The width covered by the manual centrifugal broadcaster is in the range of

3-10 m 10-15 rn


15-20 m None of these


9. The most common type of fertilizer metering mechanism in ferti seed drill in India is

fluted roller type cell type


fixed whole type auger type


10. Top dressing of nitrogenous fertilizer in field crops is generally done by

broadcasting drilling


spraying none of these


BAC-23 2 Series-C
11. Proper and long term utilization of dry fertilizer the best application method is

broadcasting


deep placement with chisel type cultivators


drilled into the soil


applied during the planting operation


12. A manually operated knapsack sprayer works on the principles of

kinetic energy centrifugal energy


gaseous energy hydraulic energy


13. The maximum permissible limit for the variation of discharge rate in most of the sprayers is

± ±5%


± 10% ±15%


14. The delivery rate at maximum discharge setting of a duster should not be less than

50 glminute 100 glminute


150 glminute 200 glminute


15. The spryer shall be deemed to have passed the spray coverage test if the area of spray
impression is not less than
2


25 50cm2


75 cm2 100 cm2


16. Threshing efficiency in case of wheat thresher should be greater than

SO% 85%


95% 99%


17. According to bureau of Indian standard the acceptable length of wheat bhusa from thresher should range

9-12 mm 12-15 mm


IS-IS mm 18-21 mm


18. The ratio between speed of reel and forward speed of a combine harvestor should be kept about

0.25 to 0.75 0.75 to 1.25


1.25 to 1.75 2.00 to 2.5


19. The uneven cutting of forage crop in a mower may be due to
alignment load
registration crop density

Serles-C 3 BAC·23
20. PUIl'0se of grading for agricultural produce are

to increase in economic value


uniformity in size, shape and weight


separation from shriveled, broken, diseased and insect infested seeds


all above


21. Grading of wheat crop is normally done by

Sieving action blowing action


both and none of above


22. On farm, the self propelled power unit for transportation is

tractor bullock


human all above


23. Transportation of agricultural produce is always most economical by means of

tractor trailer power tiller trailer


bullocks cart all above


24. At 100% relative humidity, the wet bulb temperature of air-water vapour mixture is

more than its dew point temperature


less than its dew point temperature


same as its dew point temperature


I
having no relation with dew point temperature
25. Psychrometric Chart is made for

any pressure one atmosphere pressure


below one atmosphere pressure above one atmosphere pressure


26. If air is heated, its relative humidity would

decrease increase


remain same have no relation with air heating


27, Atmospheric air from 40 °C and 60% relative humidity can be brought to 20 °C and 60% relative humidity by

cooling and dehumidification process


cooling and humidification process


adiabatic saturation process


sensible cooling process


28. The type of moisture that can be removed by common drying technique is

equilibrium moisture total moisture


free moisture bound moisture


BAc·n 4 Series·C


"

29. If m is the moisture content on wet basis and M is moisture content on dry basis then
the relationship is
100M




M





30. The moisture content of cereal grains nonnally kept around for safe storage is

(wet basis) (wet basis)


12% (weI basis) 16% (wet basis)


31. Most popular method of moisture content determination for cereal grains is by

oven method distillation method


dielectric method hygrometric method


32. Drying of parboiled paddy is nonnally carried out by

in-bin dryer batch dryer


mixing type dryer non-mixing type dryer


33. Pulses drying is nonnally done for

conditioning of pulses prior to dehusking


splitting of dehusked pulses


polishing of the pulses


all the above operations


34. In drying. free moisture content of grain is defined as the difference between

initial moisture content and final moisture content.


initial moisture content and equilibrium moisture content.


initial moisture content and critical moisture content.


critical moisture content and equilibrium moisture content.


35. The rate of evaporation of moisture from food material increases as the vapour pressure of the product is increased by

cooling freezing


heating steaming


36. Paddy sheller has a pair of rubber rolls that rotate with

identical speed in opposite direction


identical speed in same direction


differential speed in same direction


differential speed in opposite direction


Series·C 5 BAC-23
37. Size reduction of food grains is primarily by impact in

attrition mill roller mill


hammer mill jaw crusher


38.· Wheat milling is generally done in the moisture content range of




10-12% 14-16%


39. Energy required to grind a material is expressed by

Fick's law Kick's law


Newton's law Stoke's law


40. Most storage losses of cereal grains are caused by

insect damage


mold


heating due to excess moisture


rodents


41. The storage parameters which affect the storability of the grain are

moisture content and relative humidity


temperature and moisture content


I

temperature and relative humidity

none of these
42. The grain storage structures installed outdoor should be made of material

Steel


Wood


Reinforced Cement Concrete


Galvanised iron sheet


43. A 50 m high silo is fully filled with 500 tonnes of grain of having bulk density of 450 kg/m3. the diameter of the silo will be

5.32 m 4.32 m


3.53 m 10.00 m


44. Most of the fruits and vegetables moisture content (Wet basis) range from

50-60% 60-70%


65-80% 70-95%


45. The operation for separation of juice from fruit is known as

filtration extraction


expression leaching BAc·n 6 Series-C


46. Blanching of fruits and vegetables normally refers to

chill the product


inactivate degradative enzyme and deareate the product


kill the pathogenic bacteria


activate bio-chemical reactions


47. The best quality fruits products can be achieved by

freezing the product


chilling the product


freeze drying and appropriate packaging


fluidized bed drying


48. The operation in which the size of fat globules in milk is reduced by

size reduction fluidization


homogenization centrifugation


49. Thermal vapour recompression is normally used in

evaporator homogenizer


pasteurizer crystallizer


50. The freezing pqint of ice-cream mix would normally depends on

fat content dissolved solids content


protein content none of these


51. Size of droplets during atomization of milk in a spray dryer is in the range of

10-20 micron 40-50 micron


50-200 micron 200-300 micron


52. In India, the principal source of industrial production of ethanol is
maize potato
rice molasses

53. The maximum availability of biomass from agricultural residues in India is from

wheat straw paddy straw


groundnut hull rice-husk


54. The amount of husk content in paddy milling normally ranges

12-15% 16-20%


18-22% 24-30%


55. The oil content in rice bran obtained from milling of raw paddy in comparison to parboiled paddy is

higher


lower


almost the same


not affected or related to raw or parboiled paddy milling


56. Amount of sucrose to be added to 100 kg orange juice to increase its soluble solids from 12% to 45% by weight is

5.42 kg 7.50 kg


26.66 kg 60.00 kg


57. Log mean temperature difference in case of counter flow compared to parallel flow heat exchanger would be

higher lower


same none of these


58. Homogenizer valve is made of the material

Stainless Steel Stellite


Mild Steel Copper



I
59.
In a continuous ice-cream freezer, the type of heat exchanger generally used is



shell and tube plate


scraped surface tubular




Series·C 7 BAC-23
60. Killing of all the micro-organisms by thermal processing is

pasteurization sterilization


blanching clarification


61. Most of the reactions in food processing operations are of

zero order first order


second order third order


62. Concentration of liquid foods is normally done under vacuum for the reason to

kill bacteria increase viscosity


reduce damage of nutrients increase solids


63. Fresh fruits and vegetables are stored In low temperature and its relative humidity ranges from

40-50% 50-60%


60-80% 80-95%


BAC-23 8 Seri..·c
64. Field book is used in

Levelling Chain survey


Aerial survey Photograrnmetry


65. Direction can be known with the help of

Tape Scale


Compass Hand level



66. Volume of earth work can be computed by

Rational formula SCS formula


Chezy's formula Simpson's formula


67. The planimeter measures

Density Land roughness


Area All or these


68. Froude number is

v x-Ji,d


vgd v/gd


69. The plot of rainfall intensity and time is

Hydrograph Mass curve


Hyetograph Triangular hydrograph


70. Darley's law is used for

Laminar flow Turbulent flow


Critical flow Super critical flow


71. Manning's roughness coefficient

is unit less has unit as permeability


has unit as (cm)1I6 none of the above


72. The ordinate of unit hydrograph is expressed as I
I


73. The hydrologic soil group includes

Two classes A B Three classes B C


Four classes C D Four classes II, ill IV


74. The Drainable porosity at saturation is

one less than one


zero greater than one


Series-C
9 BAC-23

75. The perforated pipe system operates in pressure range of

0.5-2.5 kglcm2 1.5-3.5 kglcm2


1.0-3.0 kglcm2 2.0-4.0 kglcm2


76. A Rotating sprinkler head has a rpm of

1 5


10 20


77. The term vertical drainage refers to

River Pond


Well Spring


78. The term priming is associated with

Well Centrifugal pump


Jet pump Floating pump


79. Hooghoudt Equation is used for

Drainage Irrigation


Well discharge Survey


I
80. In Rational method maximum value of coefficient can be


zero one



five ten



81. The most commonly used method of estimation of evapotranspiration is

Pan method Hargreave equation


Penman method Modified Penman method


82. Theisson's polygon method is associated with

Rainfall Runoff


Irrigation Drainage


83. A saline soil has a pH of

seven greater than seven


less than seven none of these


84. Geological formations that do not contain groundwater at all are called

aquifuges aquitards


aquicludes aquifers


BAC-23 10 Serles-C
1
I

I

I
85. The well function for isotropic artesian aquifer is
00 00
f e-u du

U U
00 00
f f
1-u du
U U
86. An artesian aquifer is

an unconfined aquifer a confined aquifer


a water table aquifer same as a perched water table


87. Specific capacity of a well is

constant over time after commissioning of the well.


increases with time after start of pumping.


decreases with time after start of pumping.


may increase or decrease.


88. The value of soil erodibility factor in the presence of high organic matter in a soil is

higher moderately higher


lower of no consequence


89. The kinetic energy of a of 3.75 cm/hr intensity is (m-tonneslha-cm)
375.80 187.54

90. The rainfall erosivi,ty factor is calculated from the data of

daily rain fall recorder recording rain gauge


stage level recorder erosivity meter


91. Contour cultivation is found difficult in the areas dominated by

v-shaped gullies u-shaped gullies


v-shaped gullies with water flow u-shaped gullies without water flow


92. Because of easy construction and more efficiency, the most common shape of grassed water ways is

rectangular shape triangular shape


trapezoidal shape parabolic shape


93. Chute spillway handles the flow under

super critical condition critical condition


sub critical condition uniform flow condition


Serles-C 11 BAC-23
94. On a 20% hill slope, it is proposed to construct bench terraces. If the vertical interval is 2 m. width of the terrace will be (batter slope I
W 2m 00 4m 6m 8m
95. Temporary gully control structure is
drop inlet

drop spillway


brushwood dam

chute spillway

for each watershlld under the concept of 'priority watersheds'
96. Priority classification
depends on

silt yield index

runoff coefficient


time of concentration

slope parameter

97. Watershed management is

development of economy of population in the watershed.


the arrangement to harvest water.


development of land and water resources of the watershed.


the practice of conservation of soil.


98. Water harvesting primarily means

harvesting water from drains


collection and preservation of water


diverting water to rivers


removal of excess water from fields


99. Land capability class VII land is suitable for

grazing forestry


cultivation green manuring


100. Under present conditions of high labour costs, the primary consideration in farmstead planning should be for

maximum efficiency of operation conservation of soil


conservation of water resources increasing the crop yield


101. One of the following is not unit of Loose Housing method of Dairy Cattle. Identify

Feeding area Resting area


Stall barn Milking area


102. Dropping boards are provided in Poultry Housing for the accumulation of

Eggs· Manure


Feed Water


Serles-C
BAC-23 12
·

i


i.
103. The of hens is significant in designing insulation and ventilation system.

number size


weight none of these


104. The source-wise farm power availability contribution in India at present is highest by

animate tractors


stationary engines electric motors


105. Total opening of diesel engine inlet valves is kept about

215-235 degrees 5-10 degrees


180 degrees 35-45 degrees


106. In an I-head engine valves are operated by

directly through the cam shafts and lifters


the cam shaft, lifters, push rods and rocker arms


the two cam shafts and lifters


the cam shaft, lifters and push rods


107. Compression pressure of DI engine ranges

260-360 kPa 525-625 kPa


1250-1350 kPa 2500-2700 kPa


108. Optimal temperature for bio-gas production ranges between

7° to 10 °C 10° to 15°C


15° to 25 °C 25° to 35°C


109.
Relationship between power available from wind and wind velocity is

110.
Gassification of biomass is a conversion process.


pocY pocy2
1
P oc y3 P oc Y 3


Biochemical Chemical


Thermo chemical Biological


111. In a box type solar cooker the solar radiations entering and leaving the box are of

short and long wave lengths respectively


long and short wave lengths respectively


of similar wave lengths


none of these


Series-C 13 BAC·23
112. The major source of energy supply in India is

oil coal


natural gas hydro electric


113. Natural gas supply in India commenced first in

1955 1957


1959 none of these


114. MS oil quality specification in respect of sulpher content in India is

0.10 1500 ppm


0.50 none of these


115. Octane number of a gasoline is a measure of

its tendency to restrict preignition during combustion


its tendency to restrict detonation during combustion


its tendency to restrict ignition delay during combustion


its heating value


116. The specific draft (Nfcm2) of MB plough in sandy loam soil at 3 and 6 kmfhr speeds are

2.117 and 2.360 respectively 3.270 and 4.080 respectively


2.917 and 3.268 respectively 3.251 and 5.608 respectively


117. The C.L. of a 3 x 20 cm size MB plough lies approximately at cm from its first bottom wing point.

20.0 30.0


35.0 42.5


l1S. The forces acting upon side and bottom of land side as well as rolling resistance of support wheels of a MB plough are known as

useful soil forces parasitic forces


horizontal forces lateral forces


119. Tilt angle in harrow plough is kept as

100 -150 150 -250


400 -450 noneofthese


120. Puddling is done under

dxy field condition


water flooded field upto 10-15 cm depth


moist·field condition


water flooded field upto 30-45 cm depth


BAc·n 14 Serles-C
Space For Rough Work
Series-C 15 BAC-23