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26 January 2024

[Solved paper]Assistant Engineer Agriculture Kerala PSC Previous Question Paper|Assistant Engineer Agriculture Kerala PSC Question paper 665/2022

 [Solved paper]Assistant Engineer Agriculture Kerala PSC Previous Question Paper|Assistant Engineer Agriculture Kerala PSC Question paper 665/2022

Assistant Engineer Agriculture Kerala PSC Previous Question Paper

Assistant Engineer Agriculture Kerala PSC Question paper 665/2022

Question Paper Code: 169/2023/OL

Category Code: 665/2022

Exam: Assistant Engineer (Agriculture)

Date of Test:  18-12-2023

Department: Agriculture Development and Farmers Welfare

PROVISIONAL ANSWER KEY Assistant Engineer Agriculture Kerala PSC

Question1:-The name of attachment to the MB plough bottom used to cut trash,

avoid clogging and to obtain a neat furrow wall is



        C:-Trash shield

        D:-Gauge wheel

        Correct Answer:- Option-B

Question2:-Which of the following statements are correct with respect to the draft

requirement of disc ploughs?

i.    Draft is influenced by the speed of operation.

ii.   Cross sectional area of the furrow does not influence the draft requirement

iii. Diameter of the disc and concavity have considerable effect on draft.

iv. Increasing the tilt angle decreases the draft.

        A:-i, ii and iii are correct

        B:-ii and iv are correct

        C:-i and iii are correct

        D:-all are correct

        Correct Answer:- Option-C

Question3:-Which of the following methods are used to change the seed rate in a

fluted roller type metering mechanism?

i.    Shifting the rollers sideways to change the length of grooves exposed to the


ii    Change the adjustable gate opening at the discharge side

iii.   Changing the speed of driving square shaft of the fluted roller

        A:-i, ii and iii

        B:-only i

        C:-ii and iii

        D:-i and iii

        Correct Answer:- Option-D

Question4:-___________ type plough bottoms are flavoured in dry areas where the

soil is rough and stony.

        A:-Rolling bottom

        B:-Sliding bottom

        C:-Chisel type bottom

        D:-Lister bottoms

        Correct Answer:- Option-A

Question5:-A virtual point on tractor, midway between the rear wheels and in line

with axle is named as

        A:-Center of pull

        B:-Center of load

        C:-Drawbar point

        D:-Hinge point

        Correct Answer:- Option-A

Question6:-A 2-bottom tractor mounted MB plough of 30 cm width is ploughing at a

depth of 10 cm. If the tractor speed is 5 kmph and field efficiency is 70%, what is

the effective field capacity of ploughing operation.





        Correct Answer:- Option-D

Question7:-In MB ploughs, the angle normally provided at the cutting edge of share

to the direction of travel in order to obtain turning and immediate inversion is

        A:-20° to 25°

        B:-30° to 35°

        C:-35° to 40°

        D:-40° to 45°

        Correct Answer:- Option-D

Question8:-Ratio of the net pull produced to the dynamic normal load of the

traction device is

        A:-Tractive efficiency

        B:-Net Traction coefficient

        C:-Motion resistance ratio

        D:-None of these

        Correct Answer:- Option-B

Question9:-Ratio of seat vibration intensity to chassis vibration intensity in a tractor

is known as

        A:-Transfer function


        C:-Frequency response

        D:-Vibration coefficient

        Correct Answer:- Option-B

Question10:-The appropriate approach for calculating depreciation when a tractor is

purchased for its entire operational lifespan and not intended for resale is the

        A:-Straight line method

        B:-Compound interest method

        C:-Constant percentage method

        D:-Estimated method

        Correct Answer:- Option-A

Question11:-In the equation (S = C + N tan φ) to determine the shear stress at the

soil failure surface when a tillage tool moves in soil, which factor is represented by

the letter φ

        A:-Angle of soil cohesion

        B:-Angle of cutting edge

        C:-Angle of internal friction

        D:-Angle of attack

        Correct Answer:- Option-C

Question12:-Which of the following statements are true regarding the fluid

properties affecting droplet size in agricultural spraying?

i.    increased surface tension decreases the size of droplets

ii.   increased surface tension increases the size of droplets

iii. increased viscosity increases droplet sizes

iv. increased viscosity decreases droplet sizes

        A:-i and iii are correct

        B:-ii and iv are correct

        C:-ii and iii are correct

        D:-only ii is correct

        Correct Answer:- Option-C

Question13:-The rate at which energy is received from the sun on a unit area

perpendicular to the rays of the sun, at mean distance of the earth from the sun will


        A:-1.353 kilowatts per square meter

        B:-1353 W/

        C:-11.65 Langley's

        D:-42.92 Btu per sq.ft

        Correct Answer:- Option-B

Question14:-The instrument employed for measurement of the total hemispherical

solar radiation is


        B:-sunshine recorder

        C:-eppley pyrheliometer


        Correct Answer:- Option-D

Question15:-The area of the wind streams swept by the wind turbine is maximum,

when blades face into the wind. This is achieved by

        A:-Yaw control

        B:-Pitch control

        C:-Turbine tower system

        D:-Wind stream variation

        Correct Answer:- Option-A

Question16:-The C:N ratio for best biogas production is 25 to 30 because

        A:-Thermophilic bacteria are active only at C:N ratio of 25 to 30

        B:-C:N ratio of 25 to 30 will avoid scum formation

        C:-The fermentative bacteria use carbon 25 to 30 times as fast as nitrogen

        D:-C:N ratio of 25 to 30 will maintain pH

        Correct Answer:- Option-C

Question17:-The intensity, duration and frequency of rainfall are interrelated as

        A:- /

        B:- /

        C:- /

        D:- /

        Correct Answer:- Option-A

Question18:-The contour bunds in heavy and medium rainfall areas, the grades of

the bunds may be __________ towards the outlet.

        A:-0.02 to 0.08%

        B:-0.2 to 0.3%

        C:-2 to 3%

        D:-0.6 to 0.8%

        Correct Answer:- Option-B

Question19:-Which of the following is NOT the characteristics of the land capability

of different land areas for sustainable crops

        A:-The Slope

        B:-Erosion condition

        C:-The soil depth and soil type


        Correct Answer:- Option-D

Question20:-Which of the following software will not be used for GIS application






        Correct Answer:- Option-D

Question21:-In a Geographical data models, forest, desert, floodplain can be

represented by




        D:-All the above

        Correct Answer:- Option-B

Question22:-The Gunter's chain is ____________ long and divided into _________ links.

        A:-33 ft, 100

        B:-33 ft, 16

        C:-66 ft, 100

        D:-30 ft, 25

        Correct Answer:- Option-C

Question23:-Which of the following is / are bench marks

i.   GTS bench marks

ii.   Permanent and temporary bench mark

iii. Arbitrary bench mark

iv. Point benchmark

        A:-i and ii only

        B:-i, ii and iii

        C:-iii and iv only

        D:-all the above

        Correct Answer:- Option-B

Question24:-The velocity of flow at the toe in Chute Spilway design is given by


        B:- Sq.root of

        C:-V1 =

        D:- Sq.root of

        Correct Answer:- Option-D

Question25:-If the gully depth is between 1m to 5m, then Gullies are classified as

        A:-Small gullies

        B:-Large gullies

        C:-Medium gullies

        D:-Gullies depth are more than 5 m

        Correct Answer:- Option-C

Question26:-Recommended maximum velocities in low pressure underground

pipelines are in the range of _______

        A:-2.5 to 3.5 m/s

        B:-2.3 to 2.5 m/s

        C:-1.3 to 1.5 m/s

        D:-0.1 to 0.4 m/s

        Correct Answer:- Option-C

Question27:-The actual velocity at which water is moving through an aquifer is

related to the Apparent / Seepage velocity given by Darcys law, by the expression

        A:- /n


        C:- /V

        D:- /e

        Correct Answer:- Option-A

Question28:-The Delta for a crop when its duty is 864 hectares/cumec and base

period is 120 days is

        A:-864 cm

        B:-120 cm

        C:-100 cm

        D:-86.4 cm

        Correct Answer:- Option-B

Question29:-In the silt theories for design of Alluvial channels by Kennedy which of

the following statements are true :

i.     Silt is kept in suspension by the vertical component of eddies

ii.    Eddies generated from the sides of Trapezoidal channel was neglected

iii.   Critical velocity formula depends only on the depth of flow

iv.    Two regime conditions exist : initial and final regime

        A:-i, ii and iii

        B:-all the above

        C:-ii, iii and iv

        D:-iii and iv

        Correct Answer:- Option-A

Question30:-The drilling method best adapted for drilling deep holes in

unconsolidated Alluvial formations is

        A:-cable tool percussion drilling

        B:-Rotary drilling

        C:-Air rotary drilling

        D:-Down the hole drilling

        Correct Answer:- Option-B

Question31:-Which of the following statements are true regarding performance of

centrifugal pumps

i.     The capacity of the pump varies directly as the speed

ii.    The capacity of pump varies directly as the diameter

iii.   The head varies directly as the square of the speed

iv.    The head varies directly as the cube of the diameter

ii, iii and iv

        A:-ii, iii and iv

        B:-All of the above

        C:-i, ii and iii

        D:-none of the above

        Correct Answer:- Option-C

Question32:-The filter used in Drip irrigation systems to remove suspended

substances with specific gravity greater than 1.2 is

        A:-Media filter

        B:-Screen filter

        C:-Disc filter

        D:-Hydro cyclone filter

        Correct Answer:- Option-D

Question33:-In a centrifugal pump, the volute casing helps to convert

        A:-Pressure head to velocity head

        B:-Gravity head to velocity head

        C:-Gravity head to pressure head

        D:-Velocity head to pressure head

        Correct Answer:- Option-D

Question34:-The accessory used to relieve pressure in the tile drain line is

        A:-Junction box

        B:-French drains

        C:-Relief wells and Breathers

        D:-Blind inlets

        Correct Answer:- Option-C

Question35:-In case of grain, the ratio of the diameter of the largest inscribing

circle to the diameter of the smallest circumscribing circle is known as

        A:-Shape factor



        D:-None of the above

        Correct Answer:- Option-C

Question36:-The drag and lift properties of food material are important in designing

        A:-Screw conveyors

        B:-Belt conveyors

        C:-Bucket elevator

        D:-Pneumatic conveyors

        Correct Answer:- Option-D

Question37:-In __________ separator, the grain shape and the frictional difference

between the grains and belt material are used for separation

        A:-Specific gravity



        D:-Inclined belt

        Correct Answer:- Option-D

Question38:-The transport property of material that affects heat conduction is

        A:-Thermal conductivity




        Correct Answer:- Option-A

Question39:-The overall heat transfer coefficient in a heat exchanger takes into


        A:-Conduction between solid and liquids involved

        B:-Thermal radiation from the liquid and solid surfaces

        C:-Convection in each fluid involved and conduction through the walls

separating the fluids

        D:-Steady state conduction heat transfer and radiation effects only

        Correct Answer:- Option-C

Question40:-During drying process, the air moving through the grain for removing

moisture is subjected to this thermodynamic process

        A:-Heating and humidifying

        B:-Cooling and humidifying

        C:-Heating and dehumidifying

        D:-Cooling and dehumidifying

        Correct Answer:- Option-B

Question41:-In multiple effect evaporators, the pressure in the 2nd stage will be

__________ that of the first stage

        A:-Greater than

        B:-Less than

        C:-Same as

        D:-Slightly greater

        Correct Answer:- Option-B

Question42:-In falling film evaporators, the milk is introduced at the _________ of the

heating unit





        Correct Answer:- Option-C

Question43:-In a filtration equipment, resistance to filtration arises from two

sources namely the filtering screen and




        D:-filter cake

        Correct Answer:- Option-D

Question44:-Suitable moisture content for the safe storage of paddy is in the range






        Correct Answer:- Option-A

Question45:- value in thermal processing indicates the sum of lethality rate to


        A:-Complete sterilization


        C:-Commercial sterilization


        Correct Answer:- Option-C

Question46:-The free moisture available in the grain will be removed first in this

phase of drying

        A:-falling rate drying

        B:-constant rate drying

        C:-rising rate drying

        D:-exponential rate drying

        Correct Answer:- Option-B

Question47:-One of the effects of the deposition of fouling matter in heat

exchanger tubes in milk processing is that the

        A:-heat transfer rate will be increased

        B:-taste and smell of the milk will become more desirable

        C:-overall heat transfer coefficient will be reduced

        D:-convective heat transfer coefficient will be increased

        Correct Answer:- Option-C

Question48:-Kick has assumed that the energy required for size reduction is

proportional to the

        A:-size reduction ratio (dL/L)

        B:-rate of area reduction

        C:-rate of volume reduction


        Correct Answer:- Option-A

Question49:-A quotient indicating how much more rapidly the reaction proceeds at

a temperature than at a lower temperature is called as

        A:-D value

        B:-TDT value

        C:-Z value

        D:-Q value

        Correct Answer:- Option-D

Question50:-If bulk density of a material is given as 700 kg/ and true density as

1000 kg/ , its porosity will be





        Correct Answer:- Option-A

Question51:-When the annual demand of a product is 24,000 units the economic

order quantity (EOQ) is 2000 units. If the annual demand is 48,000 units the most

appropriate EOQ will be

        A:-1400 units

        B:-2000 units

        C:-2800 units

        D:-4000 units

        Correct Answer:- Option-C

Question52:-In simple exponential smoothing forecasting to five heigher weightage

to recent demand information, the smoothing constant must be equal to





        Correct Answer:- Option-D

Question53:-Six jobs arrived in a sequence as given below :

Job                      I     II   III   IV    V    VI

Completion time   4    9     5    10    6    8

Average flow time (in days) for the above jobs using shortest processing time rule is





        Correct Answer:- Option-A

Question54:-In PERT analysis, a critical activity has

        A:-Maximum float

        B:-Zero float

        C:-Maximum cost

        D:-Minimum cost

        Correct Answer:- Option-B

Question55:-The word Kanban is most appropriate associated with

        A:-Economic order quantity

        B:-Just-in-time production

        C:-Capacity planning

        D:-product design

        Correct Answer:- Option-B

Question56:-If there are 'm' sources and 'n' destinations in a transportation matrix,

the total number of basic variables in the basic feasible solution is

        A:-m + n

        B:-m - n - 1

        C:-m + n - 1


        Correct Answer:- Option-C

Question57:-Which one of the following is not a decision taken during the aggregate

production planning stage?

        A:-Scheduling of machines

        B:-Amount of labor to be committed

        C:-Rate at which production should happen

        D:-Inventory to be carried forward

        Correct Answer:- Option-A

Question58:-Determination of standard time in complex job system is best done


        A:-Stop watch time study

        B:-Analysis of micro motions

        C:-Group timing techniques

        D:-Analysis of standard date systems

        Correct Answer:- Option-D

Question59:-Which of the following are the principles of material handling?

        A:-keep all handling to the minimum

        B:-move as few pieces as possible in one unit

        C:-move the heaviest weight to the least distance

        D:-select only efficient handling equipment

        Correct Answer:- Option-B

Question60:-The routing function in a production system design is concerned with

        A:-man power utilization

        B:-machine utilization

        C:-quality assurance of a product

        D:-optimizing material flow through the plant

        Correct Answer:- Option-D

Question61:-Number of nearest neighboring atoms on FCC crystal is




        D:-None of the above

        Correct Answer:- Option-C

Question62:-Choose the correct statements for normalizing

i.   Normalizing improves strength

ii. Normalizing increase hardness

iii. Normalizing removes internal stresses

iv. Normalizing improve toughness.

        A:-i and ii are correct

        B:-iii and iv are correct

        C:-i and iv are correct

        D:-all statements are correct

        Correct Answer:- Option-B

Question63:-Which of the following defect is not detected by Dye penetrant test

        A:-Nonmetallic inclusions



        D:-Forging defects

        Correct Answer:- Option-A

Question64:-Which of the following instrument is appropriate for inspection during

mass production of identical cylindrical specimens with ±0.5mm

        A:-Vernier calipers


        C:-GO and NO-GO gauges

        D:-None of these

        Correct Answer:- Option-C

Question65:-Which is preferred for welding Aluminium sheets?

        A:-Carbon Arc Welding

        B:-Oxy-Acetylene Gas welding

        C:-TIG welding

        D:-None of these

        Correct Answer:- Option-C

Question66:-What happens to the permeability of moulding sand as the asnd grain

size increases?



        C:-Remains same

        D:-Depends on type of sand

        Correct Answer:- Option-B

Question67:-In case of simple turning operation in a Lathe, for the same spindle

speed, if the diameter of workpiece is increased, how will the cutting speed vary?



        C:-Will not change

        D:-Varies depending on tool material

        Correct Answer:- Option-A

Question68:-Continuous chips with BUE are formed during the machining of

        A:-Brittle material at low cutting speed

        B:-Ductile material at low cutting speed

        C:-Brittle material at high cutting speed

        D:-Ductile material at high cutting speed

        Correct Answer:- Option-B

Question69:-Process of changing the shape of grinding wheels when it becomes

worn from original shape due to breaking away of abrasive is called





        Correct Answer:- Option-B

Question70:-In which of the following milling method, the cutter rotates in the

direction opposite to the direction in which work is fed

        A:-Up Milling

        B:-Climb Milling

        C:-Down milling

        D:-None of these

        Correct Answer:- Option-A

Question71:-A pitot-static tube, with a coefficient of 0.98 is used to measure the

velocity of water in a pipe. The stagnation pressure head is 6 m and static pressure

head is 5 m. What is the velocity of flow?

        A:-5.32 m/s

        B:-3.14 m/s

        C:-2.14 m/s

        D:-4.34 m/s

        Correct Answer:- Option-D

Question72:-Euler equation for water turbine is derived on the basis of

        A:-Rate of change of angular momentum

        B:-Rate of change of linear momentum

        C:-Conservation of mass

        D:-Rate of change of velocity

        Correct Answer:- Option-A

Question73:-Stream lines, streak lines and path lines are identical for a

        A:-Steady flow

        B:-Unsteady flow

        C:-Incompressible flow

        D:-Never identical

        Correct Answer:- Option-A

Question74:-The material acceleration is always zero for a/an

        A:-Steady and uniform flow

        B:-Steady and non-uniform flow

        C:-Unsteady and uniform flow

        D:-Unsteady and non-uniform flow

        Correct Answer:- Option-A

Question75:-The separation of the boundary layer takes place when the pressure

gradient is





        Correct Answer:- Option-C

Question76:-When an air vessel is fitted to a single acting reciprocating pump the

% of saving in work done against friction is





        Correct Answer:- Option-A

Question77:-Two pumps can operate independently at heads and discharges

 respectively. If the pumps are connected in parallel, then what are the resulting

discharge (Q) and head (H)





        Correct Answer:- Option-A

Question78:-The overall efficiency of a centrifugal pump when head is 25 m,

discharge is 0.004 /s and output power P is 16 kW(g = 10 m/ , kg/ )





        Correct Answer:- Option-D

Question79:-Match List-I (Turbine) with List-II (Specific speeds) and select the

correct answer using the codes given below the lists

List-I                                      List-II

A.    Francis                              1.    10-35

B.    Kaplan                              2.    35-60

C.    Pelton (one jet)                 3.     60-300

D.    Pelton (two jets)                4. 300-1000

        A:-A-3, B-4, C-1, D-2

        B:-A-2, B-3, C-4, D-1

        C:-A-1, B-2, C-3, D-4

        D:-A-4, B-1, C-3, D-2

        Correct Answer:- Option-A

Question80:-For maximum efficiency of a series of curved vanes, the vane speed is

        A:-Quarter of the jet speed

        B:-One third of the jet speed

        C:-Equal to jet speed

        D:-Half of the jet speed

        Correct Answer:- Option-D

Question81:-The centroid of an equilateral triangle is located at

        A:-One-third the distance from each vertex along each median

        B:-Two-third the distance from each vertex along each median

        C:-Half the distance from each vertex along each median

        D:-Various distance from each vertex along the median

        Correct Answer:- Option-B

Question82:-A steel cylindrical closed container having inner diameter D and wall

thickness t, where D > 20t, is holding gas at pressure P. If the container is

positioned horizontally, the hoop stress experienced by the cylinder could be

        A:-2 P/t

        B:-4 P/t



        Correct Answer:- Option-C

Question83:-Which among the following screw thread profile is suggested in higher

axial load applications

        A:-Acme thread

        B:-Buttress thread

        C:-Square thread


        Correct Answer:- Option-B

Question84:-A design engineer designated a fit as 25H6k7, to mount a gear on a

shaft. What kind of fit is it?

        A:-Clearance fit

        B:-Interference fit

        C:-Transition fit

        D:-Data insufficient

        Correct Answer:- Option-C

Question85:-An orthopedic implant pin of titanium alloy having length 50 mm and

diameter 20±0.02 mm is to be plated with nickel with coating thickness 50±5μm.

What would be the dimension of the GO ring gauge to check the diameter of the

plated pin, if gauge tolerance is neglected?

        A:-20.075 mm

        B:-20.130 mm

        C:-20.020 mm

        D:-20.070 mm

        Correct Answer:- Option-B

Question86:-'A screw advances linearly when the screw is rotated inside a

stationary nut'. How many degrees of freedom for such a screw joint?




        D:-cannot be defined

        Correct Answer:- Option-A

Question87:-Stress-strain curve of a material is observed to be linear throughout

the strain limit. The material could be


        B:-Mild steel


        D:-Any of the above

        Correct Answer:- Option-C

Question88:-A surface roughness profile of a turned surface is appeared to be a

triangular profile having base b and height h, as shown below. The CLA roughness

value for the given profile would be






        Correct Answer:- Option-A

Question89:-Pick the odd-one-out from the given power transmission drives:

        A:-Gear drive

        B:-Belt drive

        C:-Chain drive

        D:-Clutch drive

        Correct Answer:- Option-D

Question90:-Which among the given metal joining terminology is commonly used,

when two pieces of metal are joined by melting its edges and adding a filler

material, if necessary?

        A:-Ultrasonic welding

        B:-Friction welding

        C:-Resistance welding

        D:-Fusion welding

        Correct Answer:- Option-D

Question91:-For a heat exchanger, Δ is the maximum temperature difference

and Δ is the minimum temperature difference between the two fluids. LMTD is

the log mean temperature difference. and are the minimum and the

maximum heat capacity rates. The maximum possible heat transfer between the

two fluids is

        A:- LMTD

        B:- LMTD

        C:- Δ

        D:- Δ

        Correct Answer:- Option-D

Question92:-A hollow cylinder has length L, inner radius r1, outer radius r2, and

thermal conductivity k. The thermal resistance of the cylinder for radial conduction





        D:-None of the above

        Correct Answer:- Option-B

Question93:-The ratio of momentum diffusivity (v) to thermal diffusivity ( ) is called

        A:-Prandtl number

        B:-Reynolds number

        C:-Grashoff number

        D:-Nusselt number

        Correct Answer:- Option-A

Question94:-For a glass plate transitivity and reflectivity are specified as 0.85 and

0.09 respectively, the absorptivity of the glass plate is





        Correct Answer:- Option-C

Question95:-Before entering the expansion or the throttle valve, a refrigerant's

condition in any vapor compression system is

        A:-Dry vapor

        B:-High pressure saturated liquid

        C:-Low pressure saturated liquid

        D:-High pressure vapor

        Correct Answer:- Option-B

Question96:-Which of the following process is used in winter air conditioning?

        A:-Heating and Humidification

        B:-Cooling and Dehumidification


        D:-All of the above

        Correct Answer:- Option-A

Question97:-The highest temperature of a refrigerant in a refrigeration system

operating on a reversed

Carnot cycle is 27°C and the lower temperature is -23°C. The coefficient of






        Correct Answer:- Option-D

Question98:-The theoretically correct air-fuel ratio for petrol engine is approximately





        Correct Answer:- Option-D

Question99:-The thermal efficiency of a diesel engine is of the order of





        Correct Answer:- Option-C

Question100:-Diesel Engine fuels are rated by

        A:-Cetane number

        B:-Octane number


        D:-CFR number

        Correct Answer:- Option-A

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