[Solved paper]Assistant Engineer Agriculture Kerala PSC Previous Question Paper|Assistant Engineer Agriculture Kerala PSC Question paper 665/2022
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
A:-Jointer
B:-Coulter
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
seed
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.
A:-3.0
B:-2.1
C:-0.3
D:-0.21
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
B:-Transmissibility
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
be
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
A:-pyrheliometer
B:-sunshine recorder
C:-eppley pyrheliometer
D:-pyranometer
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
D:-Rainfall
Correct Answer:- Option-D
Question20:-Which of the following software will not be used for GIS application
software?
A:-GRASS
B:-IDRISI
C:-ILWIS
D:-BETILGI
Correct Answer:- Option-D
Question21:-In a Geographical data models, forest, desert, floodplain can be
represented by
A:-Points
B:-Polygons
C:-Lines
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
A:-
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
B:-
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
B:-Roundness
C:-Sphericity
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
B:-Cyclone
C:-Centrifugal
D:-Inclined belt
Correct Answer:- Option-D
Question38:-The transport property of material that affects heat conduction is
A:-Thermal conductivity
B:-Velocity
C:-Viscosity
D:-Porosity
Correct Answer:- Option-A
Question39:-The overall heat transfer coefficient in a heat exchanger takes into
effect
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
A:-Side
B:-Bottom
C:-Top
D:-Front
Correct Answer:- Option-C
Question43:-In a filtration equipment, resistance to filtration arises from two
sources namely the filtering screen and
A:-liquid
B:-frame
C:-air
D:-filter cake
Correct Answer:- Option-D
Question44:-Suitable moisture content for the safe storage of paddy is in the range
of
A:-10-12%
B:-16-22%
C:-22-28%
D:-4-6%
Correct Answer:- Option-A
Question45:- value in thermal processing indicates the sum of lethality rate to
ensure
A:-Complete sterilization
B:-Sterilization
C:-Commercial sterilization
D:-Pasteurization
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
D:-shape
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
A:-30%
B:-70%
C:-40%
D:-20%
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
A:--1
B:-zero
C:-0.5
D:-1.0
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
A:-20.83
B:-20.03
C:-125
D:-126.5
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
D:-m
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
through
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
A:-6
B:-8
C:-12
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
B:-Leaks
C:-Cracks
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
B:-Micrometers
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?
A:-Decreases
B:-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?
A:-Increase
B:-Decrease
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
A:-Dressing
B:-Truing
C:-Glazing
D:-Buffing
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
A:-Negative
B:-Constant
C:-Positive
D:-Zero
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
A:-84.8%
B:-39.2%
C:-50%
D:-100%
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)
A:-
B:-
C:-
D:-
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/ )
A:-65%
B:-55%
C:-52.5%
D:-62.5%
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
C:-PD/2t
D:-PD/4t
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
D:-V-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?
A:-1
B:-2
C:-zero
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
A:-Titanium
B:-Mild steel
C:-Glass
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
A:-h/2
B:-h
C:-2h
D:-bh
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
is
A:-
B:-
C:-
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
A:-0.05
B:-0.005
C:-0.06
D:-0.94
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
C:-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
performance?
A:-5.5
B:-0.2
C:-1.5
D:-5.0
Correct Answer:- Option-D
Question98:-The theoretically correct air-fuel ratio for petrol engine is approximately
A:-7:1
B:-4:1
C:-25:1
D:-15:1
Correct Answer:- Option-D
Question99:-The thermal efficiency of a diesel engine is of the order of
A:-90%
B:-15%
C:-35%
D:-70%
Correct Answer:- Option-C
Question100:-Diesel Engine fuels are rated by
A:-Cetane number
B:-Octane number
C:-HUCR
D:-CFR number
Correct Answer:- Option-A
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