[Solved Paper]Junior Instructor Mechanical Agricultural Machinery
FINAL ANSWER KEY of Junior Instructor Mechanical Agricultural Machinery 506/2022
Question Paper Code: 154/2023/OL
Category Code: 506/2022
Exam: Junior Instructor Mechanical Agricultural Machinery (SR for ST only)
Date of Test 30-09-2023
Department Industrial Training
Question1:-Fire extinguisher can be used with fire on electrical equipment.
A:-Halon extinguishers
B:-Foam extinguishers
C:-Dry powder extinguishers
D:-Water-filled extinguishers
Correct Answer:- Option-A
Question2:-In which class of fire includes "Fire on electrical equipment?
A:-Class A fire
B:-Class B fire
C:-Class C fire
D:-Class D fire
Correct Answer:- Option-D
Question3:-In ABC of first aid, 'B' stands for
A:-Burn
B:-Brocken
C:-Barrier
D:-Breathing
Correct Answer:- Option-D
Question4:-Choose the correct statement regarding ECOs.
A:-'Avoiding careless waste' belongs to minor ECOs
B:-'To stopping of leakage points' included in major ECOs
C:-'Replacement of existing household appliances by new energy efficient
ones' included in Minor ECOs
D:-'Replacement or major renovation of old buildings' included in Medium
ECOs
Correct Answer:- Option-A
Question5:-Which one of the following is NOT a marking material?
A:-Copper sulphate
B:-Lead sulphate
C:-Cellulose Lacquer
D:-Prussian blue
Correct Answer:- Option-B
Question6:-Reading accuracy of engineer's steel rule.
A:-0.5 mm
B:-0.1 mm
C:-0.05 mm
D:-1 mm
Correct Answer:- Option-A
Question7:-Choose the correct statement regarding clearance angle of chisel.
A:-Angle between cutting edges of chisel
B:-The angle between the top face of the cutting point, and normal to the work
surface
C:-The angle between the bottom face of the point and tangent to the worksurface
D:-Angle between axis of handle and peen
Correct Answer:- Option-C
Question8:-Which hammer is used to spread metal in one direction at right angles
to the line of striking?
A:-Straight pein hammer
B:-Cross pein hammer
C:-Ball pein hammer
D:-Claw hammer
Correct Answer:- Option-A
Question9:-Ratio between length and jaw width of a double end spanner.
A:-9:1
B:-10:1
C:-11:1
D:-12:1
Correct Answer:- Option-B
Question10:-Distance moved by the spindle with one revolution of a thimble in
micrometer.
A:-0.05 mm
B:-0.5 mm
C:-0.1 mm
D:-0.01 mm
Correct Answer:- Option-B
Question11:-How many blades are in the universal feeler gauge?
A:-10
B:-15
C:-20
D:-25
Correct Answer:- Option-D
Question12:-Which material is used making for straight edge?
A:-Cast iron
B:-Grey cast iron
C:-Mild steel
D:-Aluminum alloy
Correct Answer:- Option-B
Question13:-Which is the indirect measuring tool?
A:-Inside micrometer
B:-Outside micrometer
C:-Feeler gauge
D:-Telescopic gauge
Correct Answer:- Option-D
Question14:-The distance between adjacent teeth of hack saw blade is known as
A:-Thickness
B:-Pitch
C:-Length
D:-Coarse
Correct Answer:- Option-B
Question15:-Which type of nut has an internal groove cut in which a fiber or nylon
ring is inserted?
A:-Square nut
B:-T nut
C:-Wing nut
D:-Self locking nut
Correct Answer:- Option-D
Question16:-In single cut file, what is the angle of teeth to center line?
A:-90°
B:-30°
C:-60°
D:-20°
Correct Answer:- Option-C
Question17:-Which type of washers have made with serrations, cut and twisted?
A:-Flat washer
B:-Taper washer
C:-Plate washer
D:-Toothed lock washer
Correct Answer:- Option-D
Question18:-Which law states that the pressure of a liquid is transmitted equally in
all directions?
A:-Boyle's law
B:-Pascal's law
C:-Charle's law
D:-Ohm's law
Correct Answer:- Option-B
Question19:-Which action of liquid penetrant testing, the liquid penetrant dye seeps
into the defects of material?
A:-Over flow
B:-Capillary
C:-Forming
D:-Leveling
Correct Answer:- Option-B
Question20:-How many ports have a 4/2 directional control hydraulic valve?
A:-Four
B:-Five
C:-Two
D:-Six
Correct Answer:- Option-A
Question21:-What is meant by FRL unit in pneumatic system?
A:-Filter rectified lubricator
B:-Filter regeneration lubricator
C:-Filter regulator lubricator
D:-Flow regulator lubricator
Correct Answer:- Option-C
Question22:-Which tool is mainly used to make external threading of a cylindrical
component?
A:-Tap
B:-Drill bit
C:-Die nut
D:-Die
Correct Answer:- Option-D
Question23:-Which part of a drill bit is mainly using to determine its diameter?
A:-Point
B:-Lip
C:-Web
D:-Land
Correct Answer:- Option-D
Question24:-Which tool is used for chasing or reconditioning the damaged threads
and it is not used for cutting new threads?
A:-Die nut
B:-Circular split die
C:-Half die
D:-Button die
Correct Answer:- Option-A
Question25:-Which vice is used for holding small diameter jobs, having a small
collect chuck at one end and it carries a set of jaws which are operated by turning
the handle?
A:-Hand vice
B:-pin vice
C:-Toolmaker's vice
D:-Bench vice
Correct Answer:- Option-B
Question26:-What is the name of an amber coloured substance of non-corrosive
soldering flux extracted from pine tree sap?
A:-Resin
B:-Tallow
C:-Eutectic alloy
D:-Sal ammoniac
Correct Answer:- Option-A
Question27:-What is the other name of sheet metal seam called pittsburgh seam?
A:-Grooved seam
B:-Locked grooved seam
C:-Hammer lock seam
D:-Knocked up seam
Correct Answer:- Option-C
Question28:-What is the shearing operation of a power press that circular holes are
punched in a regular pattern or evenly spaced?
A:-Piercing
B:-Blanking
C:-Punching
D:-Perforating
Correct Answer:- Option-D
Question29:-What is the name of black iron sheet which is coated with lead on it?
A:-Tinned sheet
B:-Duralumin sheet
C:-Terne sheet
D:-PVC sheet
Correct Answer:- Option-C
Question30:-Where does electro-static shielding occur in a charged spherical shell?
A:-When electrical potential outside spherical shell is zero
B:-When electrical potential inside spherical shell is zero
C:-Electrical field outside spherical shell is zero
D:-Electrical field inside spherical shell is zero
Correct Answer:- Option-D
Question31:-Which of the following circuit cannot be analysed using Ohm's law?
A:-Bilateral
B:-Unilateral
C:-Linear
D:-Conductors
Correct Answer:- Option-B
Question32:-Super position theorem is applicable for
A:-Linear bilateral network
B:-Non linear bilateral network
C:-Linear unilateral network
D:-All of the above
Correct Answer:- Option-A
Question33:-Which type of meter is used to test the polarity of battery?
A:-Moving iron ammeter
B:-Moving iron voltmeter
C:-Moving coil voltmeter
D:-Dynamo meter type
Correct Answer:- Option-C
Question34:-An example of non ohmic resistance is
A:-Tungsten wire
B:-Diode
C:-Carbon resistance
D:-Copper wire
Correct Answer:- Option-B
Question35:-In which material if the temperature is increased then the resistance
will decreased?
A:-Tungsten
B:-Carbon
C:-Nichrome
D:-Manganese
Correct Answer:- Option-B
Question36:-The SI unit of quantity of electricity is
A:-Volt
B:-Ampere
C:-Coulomb
D:-Whatever
Correct Answer:- Option-C
Question37:-For the same rating which capacitor is physically smaller
A:-Ceramic capacitor
B:-Paper capacitor
C:-Both have same size
D:-None of the above
Correct Answer:- Option-A
Question38:-Two resistors are said to be connected in series when
A:-Total current is equal to the sum of branch current
B:-Both carry the same value of current
C:-Sum of IR drops equals the applied EMF
D:-Same current passes in turn through both
Correct Answer:- Option-D
Question39:-The energy in a lead acid battery is stored in the form of
A:-Electrostatic charge
B:-Chemical energy
C:-Non flowing current
D:-Nuclear energy
Correct Answer:- Option-B
Question40:-Both the inductance and resistance of a coil are doubled the value of
A:-Time constant is halved
B:-Initial rate of rise of current is doubled
C:-Final steady current is doubled
D:-Time constant remains unchanged
Correct Answer:- Option-D
Question41:-The phase difference between the primary and secondary voltage of a
transformer is
A:-Zero degree
B:-90 degree
C:-180 degree
D:-Between 30 degree and 60 degree
Correct Answer:- Option-C
Question42:-Choose the correct relation
A:-Potential = charge × capacity
B:-Charge = potential/capacity
C:-Potential = charge/capacity
D:-Capacity = potential × charge
Correct Answer:- Option-C
Question43:-Which is the advanced version of power electronic component used in
the output stage in drives?
A:-FET
B:-UJT
C:-SCR
D:-IGBT
Correct Answer:- Option-C
Question44:-Why most of semi-conductor devices are made by silicon compared to
Germanium?
A:-High barrier voltage
B:-High resistance range
C:-High thermal conductivity
D:-High current carrying capacity
Correct Answer:- Option-A
Question45:-Which type of biasing is required to an npn transistor for amplification?
A:-Base ground, emitter and collector positive
B:-Base negative, emitter positive and collector negative
C:-Base positive, emitter negative and collector positive
D:-Base positive, emitter negative and collector negative
Correct Answer:- Option-C
Question46:-Which of the following logic gates gives high output with all its input
low
A:-NOT
B:-OR
C:-NOR
D:-AND
Correct Answer:- Option-C
Question47:-The portion of weld joint that is melted by the heat of welding is called
A:-Crater
B:-Puddle
C:-Tack weld
D:-Weld face
Correct Answer:- Option-B
Question48:-The adding of iron powder to the electrode coating causes an increase
in
A:-Metal penetration
B:-Metal deposition rate
C:-Weld speed
D:-All of these
Correct Answer:- Option-B
Question49:-Which of the following is a batch furnance?
A:-Salt bath furnance
B:-Fluidized Beds
C:-Pit furnance
D:-None of these
Correct Answer:- Option-C
Question50:-In reverse polarity
A:-More weld penetration
B:-Less weld penetration
C:-Deeper Weld Zone
D:-All of these
Correct Answer:- Option-B
Question51:-Pre-ignition is caused by the burning of the fuel in the combustion
chamber before the piston has reached the top dead centre, and is due to
A:-Overheated spark plug points
B:-Red hot carbon deposits on cylinder walls
C:-Cylinder walls being too hot
D:-Any of the mentioned above
Correct Answer:- Option-D
Question52:-Theoretically correct air fuel mixture in a spark ignition engine
A:-10:1
B:-15:1
C:-20:1
D:-25:1
Correct Answer:- Option-B
Question53:-The process of breaking up of a liquid into fine droplets by spraying is
called
A:-Vaporisation
B:-Carburetion
C:-Atomization
D:-Ionization
Correct Answer:- Option-C
Question54:-Which engine can be operated both in clock-wise and counter clockwise direction?
A:-Two stroke engine
B:-Four stoke engine
C:-Both two stroke and four stroke engine
D:-None of the above
Correct Answer:- Option-A
Question55:-The ignition quality of diesel fuel is indicated by
A:-Octane number
B:-Calorific value
C:-Cetane number
D:-None of these
Correct Answer:- Option-C
Question56:-The function of the compression ring is that it
A:-Increases the combustion temperature
B:-Creates swirling
C:-Maintains a seal and prevents the fuel leakage
D:-Maintains a seal and prevents escape of burned gases from the combustion
chamber to sump
Correct Answer:- Option-D
Question57:-A cylinder block is normally made of
A:-Aluminium
B:-High carbon steel
C:-Cast iron
D:-Mild steel
Correct Answer:- Option-C
Question58:-In a four stroke diesel engine, the inlet valve
A:-Opens at T.D.C. and closes at B.D.C.
B:-Opens at 10° before T.D.C and closes at 35° after B.D.C.
C:-Opens at 10° after T.D.C. and closes at 30° before B.D.C
D:-None of the above
Correct Answer:- Option-B
Question59:-The oil pump used in the lubricating system of engine
A:-Gear pump
B:-Rotor pump
C:-Plunger type pump
D:-Any one of the above
Correct Answer:- Option-D
Question60:-The most common firing order in a straight six cylinder engine
A:-1-5-3-6-2-4
B:-1-3-6-5-2-4
C:-1-6-4-2-5-3
D:-None of the above
Correct Answer:- Option-A
Question61:-Clutch works on principle of
A:-Cohesion
B:-Adhesion
C:-Friction
D:-All the above
Correct Answer:- Option-C
Question62:-The specific fuel consumption of diesel engine is
A:-160 gm/bhp/hr
B:-200 gm/bhp/hr
C:-240 gm/bhp/hr
D:-290 gm/bhp/hr
Correct Answer:- Option-B
Question63:-Toe-in provide in tractor is approximately
A:-4-8 mm
B:-10-14 mm
C:-15-18 mm
D:-19-22 mm
Correct Answer:- Option-A
Question64:-Hydraulic brake works on the principle of
A:-Newton's law
B:-Pascal's law
C:-Boyles law
D:-None of these
Correct Answer:- Option-B
Question65:-A power tiller operates most satisfactory with
A:-Reaper
B:-M.B. Plough
C:-Disc harrow
D:-Rotary tillage tool
Correct Answer:- Option-D
Question66:-Weight transfer in a tractor implement system is caused by
A:-Application of pull
B:-Tractive force
C:-Traction coefficient
D:-All are correct
Correct Answer:- Option-A
Question67:-An implement that fully supported by the tractor is
A:-Trailed implement
B:-Mounted implement
C:-Semi mounted implements
D:-All are correct
Correct Answer:- Option-B
Question68:-The capacity of a battery is usually expressed in terms of
A:-Volts
B:-Amperes
C:-Weight
D:-Ampere hours
Correct Answer:- Option-D
Question69:-Relative movement of the wheel in direction of travel for given
distance under load and no load condition is
A:-Coefficient of traction
B:-Coefficient of rolling resistance
C:-Wheel slip
D:-Tractive efficiency
Correct Answer:- Option-C
Question70:-The parking brakes employed in vehicles are operated
A:-Mechanically
B:-Hydraulically
C:-Pneumatically
D:-None of these
Correct Answer:- Option-A
Question71:-_________ is preferred to make MB plough shares as it can be forged
A:-Cast iron
B:-Chilled cast iron
C:-High carbon steel
D:-All of the above
Correct Answer:- Option-C
Question72:-When a plough works around a strip of ploughed land, the method of
ploughing is
A:-Gathering
B:-Casting
C:-Dead furrow
D:-None of the above
Correct Answer:- Option-A
Question73:-Which of the following factors affect the draft of a disc plough?
(i) Speed of operation and soil moisture
(ii) Diameter of disc and disc concavity
(iii) Disc angle and tilt angle
A:-(i) and (ii)
B:-(ii) and (iii)
C:-(i) and (iii)
D:-All of the above (i), (ii) and (iii)
Correct Answer:- Option-D
Question74:-A __________ is used for deep ploughing and breaking hard pan at
depth of 50 cm or more.
A:-Chisel plough
B:-Sub soiler
C:-Duck foot cultivator
D:-None of the above
Correct Answer:- Option-B
Question75:-Which of the following statement/(s) is true regarding a tractor
operated rotovator?
(i) Rotovator combines primary and secondary tillage in one operation
(ii) Rotovator provides negative draft
A:-Only (i)
B:-Only (ii)
C:-Both (i) and (ii)
D:-Neither (i) nor (ii)
Correct Answer:- Option-C
Question76:-The tilt angle of a vertical disc plough is
A:-15-25 degrees
B:-42-45 degrees
C:-0 degree
D:-None of the above
Correct Answer:- Option-C
Question77:-Which of the following affect the penetration of a disc harrow in the
field?
(i) Lowering hitch point
(ii) Increasing gang angle
(iii) Using smaller diameter discs with lesser concavity
(iv) Decreasing gang angle
A:-(i), (ii) and (iii)
B:-(i), (ii) and (iv)
C:-(i) and (ii) only
D:-(i) and (iii) only
Correct Answer:- Option-A
Question78:-_______ is the flanged tube mounted on gang bolt between every two
discs of the disc harrows to prevent their lateral movement
A:-Gang
B:-Spool
C:-Plug
D:-None of the above
Correct Answer:- Option-B
Question79:-The commonly made adjustments on cultivator shovels are
A:-Setting for proper row width
B:-Setting for depth
C:-Turning shovel on tyne to displace required amount of soil
D:-All of the above
Correct Answer:- Option-D
Question80:-Vertical suction of an MBP is
A:-3 to 5 mm
B:-6 to 12 cm
C:-5 to 10 mm
D:-3 to 5 cm
Correct Answer:- Option-A
Question81:-Chemical treatment using _________ removes the organic and physical
materials that clog the emitters in a drip irrigation system
A:-Acid
B:-Chlorine
C:-Iron
D:-All of the above
Correct Answer:- Option-B
Question82:-Controlling an existing or potential high water table or artesian
groundwater condition using shallow or deep tube wells or open wells is called
__________ drainage
A:-Sub surface
B:-Surface
C:-Vertical
D:-Land
Correct Answer:- Option-C
Question83:-Centrifugal pump is a type of __________ pump
A:-Positive displacement
B:-Rotodynamic
C:-Rotary
D:-None of the above
Correct Answer:- Option-B
Question84:-_________ starter is used in high rating 3 phase motors
A:-On-off switch
B:-Push button
C:-Direct on-line
D:-Star-Delta
Correct Answer:- Option-D
Question85:-Threshing can be accomplished by
A:-Rubbing action
B:-Impact action
C:-Stripping action
D:-All of the above
Correct Answer:- Option-D
Question86:-The ________ type forage harvesters use free swinging chains,
hammers or knives to cut the crop
A:-Flail
B:-Cutter bar
C:-Cylinder
D:-All of the above
Correct Answer:- Option-A
Question87:-Find the capacity of a field chopper with throat size 20 cm × 5 cm
operating at 50 rpm. The cutter head has two knives with length of cut 3 cm. The
bulk density of the material is 500 kg/m3 and the field efficiency of the chopper is
80%
A:-525 kg/h
B:-500 kg/h
C:-600 kg/h
D:-720 kg/h
Correct Answer:- Option-D
Question88:-The free threshed grain carried over the rack in the straw and
discharged from the combine harvester is called
A:-Grain loss
B:-Rack loss
C:-Cylinder loss
D:-Shoe loss
Correct Answer:- Option-B
Question89:-The lead adjustment provided to the outer end of the cutter bar, when
the mower is not in operation is
A:-1 cm per meter of cutter bar
B:-2 cm per meter of cutter bar
C:-3 cm per meter of cutter bar
D:-5 cm per meter of cutter bar
Correct Answer:- Option-B
Question90:-The distance of throw of water from a sprinkler depends on
(i) Operating pressure
(ii) Size and shape of nozzle
(iii) Angle of nozzle
A:-(i) only
B:-(i) and (ii) only
C:-(i) and (iii) only
D:-All of the above (i), (ii) and (iii)
Correct Answer:- Option-D
Question91:-______ separator is used based on the difference in aerodynamic
properties of various constituents of mixture
A:-Spiral separator
B:-Destoner
C:-Pneumatic separator
D:-Inclined draper
Correct Answer:- Option-C
Question92:-________ refers to the classification of cleaned products in to various
quality fractions
A:-Cleaning
B:-Grading
C:-Screening
D:-Separation
Correct Answer:- Option-B
Question93:-_________ is a machinery used for squeezing or pressing the material
unit it breaks
A:-Crusher
B:-Grinder
C:-Cutting machines
D:-Flour mill
Correct Answer:- Option-A
Question94:-Hammer mill works under the force of
A:-Crushing
B:-Grinding
C:-Shearing
D:-Impact
Correct Answer:- Option-D
Question95:-________ are used for lifting vertically between two pulleys to more
than 50 m
A:-Bucket elevator
B:-Screw conveyor
C:-Belt conveyor
D:-Pneumatic conveyor
Correct Answer:- Option-A
Question96:-Modern facilities for storing the grains is
A:-Pusa bin
B:-Silo
C:-Brick and cement bin
D:-Bunker storage
Correct Answer:- Option-B
Question97:-EMC gives an idea about
A:-Initial moisture content of the material
B:-Final moisture content of the material
C:-Critical moisture content of the material
D:-Whether the material will loose or gain the moisture at a particular set of
atmospheric conditions
Correct Answer:- Option-D
Question98:-_________ method of drying is based on the sublimation of frozen
moisture from wet product
(i) Fluidized bed
(ii) Spray drying
(iii) Freeze drying
(iv) Vacuum drying
A:-Only (i)
B:-Both (ii) and (iv)
C:-Both (i) and (iii)
D:-Only (iii)
Correct Answer:- Option-D
Question99:-_______ is used for fumigating grain in tall sealed silos
(i) Chlorine
(ii) Phosphine
(iii) Carbon dioxide
A:-Only (i)
B:-Only (ii)
C:-Both (i) and (iii)
D:-Both (i) and (ii)
Correct Answer:- Option-B
Question100:-Accuracy of the moisture content determination is obtained from
(i) Direct method
(ii) Indirect method
(iii) Chemical method
A:-Only (i)
B:-Only (ii)
C:-Both (i) and (ii)
D:-Only (iii)
Correct Answer:- Option-A
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