Agriculture MCQs

Agri-MCQs # 20: 1000 MCQs on Agricultural Engineering

fasalbachao.com October 6, 2025

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The metering mechanism used in potato planter is:
1. Fluted roller
2. Brush feed type
3. Picker wheel type
4. Cell feed type
Answer: C
A motorized rotary tiller is ____ equipment:
1. Tractor mounted
2. Self-propelled
3. Manual
4. Animal drawn
Answer: B
Hollow cone nozzle employed on boom type sprayer have spray angle of:
1. 30–50°
2. 40–60°
3. 65–110°
4. 90–120°
Answer: C
Leaf colour chart (LCC) is used to indicate real-time:
1. Nitrogen level
2. Carbon level
3. Moisture content
4. Chlorophyll
Answer: A
____ refers to the spread of fertilizer in between the rows and around the plants:
1. Plough sole placement
2. Localized placement
3. Side dressing
4. Band placement
Answer: C
The metering in which seeds are held by atmospheric pressure at drum hole is called:
1. Mechanical metering
2. Pressurized metering
3. Vacuumed metering
4. Cup feed metering
Answer: C
Foliar application of fertilizers generally refers to:
1. Micro nutrients
2. Macro nutrients
3. Dusting powdery nutrients
4. Insecticide application
Answer: A
In case of ____ puddling is required for sowing of rice crop.
1. Broadcaster
2. DSR drill
3. Transplanter
4. None of these
Answer: C
____ is used for sowing of dry rice seeds.
1. Dibbler
2. DSR drill
3. Transplanter
4. All of these
Answer: B
Which of the following consists of a large bucket in case of land development equipment?
1. Escalator
2. Scraper
3. Grader
4. None of these
Answer: B
Which of the following is considered as unmanned aerial vehicle?
1. Thematic soil mapper
2. MSS sensor
3. Drone
4. Aerosol
Answer: C
In which of the followings, the application rate is adjusted based on digital maps of field properties?
1. Map based VRA
2. Sensor based VRA
3. Both Map and sensor based VRA
4. None of these
Answer: A
In case of sensor based VRA, the amount of material applied into the fields is regulated using:
1. Actuators
2. Speed sensor
3. Pressure relief valve
4. None of these
Answer: A
____ is used to cut the sugarcane stalks from ground in sugarcane harvester.
1. Chopper
2. Topper
3. Base cutter
4. None of these
Answer: C
Which of the following is not used for cutting of cereal crops?
1. Reaper cum binder
2. Combine harvester
3. Windrower
4. Mower
Answer: D
Which of the followings is used to cut the crops and ties them into a knot and uniform sheaves?
1. Mower
2. Windrower
3. Reaper cum binder
4. Combine harvester
Answer: C
A tractor drawn semi-mounted mower is operated using:
1. Belt and pulley drive
2. Tractor hydraulic linkages
3. Tractor power take off
4. Tractor hitch
Answer: C
In case of reaper, the knife clips are placed with:
1. Ledger plate
2. Wearing plate
3. Guard
4. Cutter bar
Answer: B
A reaper is moving with 2.77 m/s in the field. The stroke length of cutter bar is 8 cm and cutting speed is 720 strokes per minute. What will be the cutting index of reaper?
1. 0.50
2. 1.25
3. 1.75
4. 2.25
Answer: B
Which of the followings is not performed by a reel of the combine harvester?
1. Preventing shattering of the crop
2. Allow crop to move uniformly to platform
3. Handle matted crop
4. Picking up shattered grains
Answer: D
Nowadays, which of the followings is most commonly used reel in combine harvesters?
1. Slat type reel
2. Pick up type reel
3. Wooden reel
4. Bar type reel
Answer: B
In case of combine harvester, the optimum value of reel index for minimum cutter bar loss is taken as:
1. 1.25 to 1.50
2. 2.25 to 3.25
3. 3.25 to 4.50
4. 4.25 to 5.50
Answer: A
If the ____, the mechanical wheat thresher causes more seed damage.
1. Speed is increased
2. Clearance is increased
3. Speed is decreased
4. Feed rate is reduced
Answer: A
Which of the followings is not to remove grains from grain heads?
1. Cylinder
2. Concave
3. Beater
4. Sieve
Answer: D

Which of the followings causes broken grains at main outlet of the thresher?
1. Less clearance of concave
2. Lower speed of threshing drum
3. High concave clearance
4. High crop feed rate
Answer: A
What should be the roller tip speed in case of sugarcane harvester:
1. 15–25% of chopper tip speed
2. 25–45% of chopper tip speed
3. 55–65% of chopper tip speed
4. 75–95% of chopper tip speed
Answer: C
For conventional maize sheller, threshing drum speed should be:
1. 300–400 rpm
2. 500–600 rpm
3. 700–800 rpm
4. 900–1000 rpm
Answer: B
The spindle type cotton pickers are capable of cotton picking up to:
1. 48% of cotton produced
2. 68% of cotton produced
3. 78% of cotton produced
4. 98% of cotton produced
Answer: D
The flow rate is ____ in case of hydrodynamic transmission.
1. Higher than hydrostatic transmission
2. Lower than hydrostatic transmission
3. Equal to hydrostatic transmission
4. Variable compared with hydrostatic transmission
Answer: A
In pneumatic system, the operating pressure is:
1. 10–60 psi
2. 70–150 psi
3. 150–180 psi
4. 180–250 psi
Answer: B
Which of the followings is not classified as hydraulic valves?
1. Pressure control valve
2. Flow control valve
3. Direction control valve
4. Solenoid valve
Answer: D
Which of the followings in tractor is used for automatic raising and lowering of the implements?
1. Position control
2. Draft control
3. Flow control
4. Direction control
Answer: B
The speed of PTO shaft with six splines is:
1. 420
2. 540
3. 640
4. 720
Answer: B
Which of the followings is not used for navigation purpose?
1. GPS
2. DGPS
3. GNSS
4. GIS
Answer: D
Seed material can be saved up to ____ using Intelligent Distribution System (IDS).
1. 1 percent
2. 6 percent
3. 16 percent
4. 26 percent
Answer: B
Which of the followings is not an air metering mechanism?
1. Pressurized metering drum
2. Pressurized metering disk
3. Vacuum drum
4. Vacuum metering disk
Answer: C
Scraper is designed to dig, load, haul, dump and spread the soil. It is also called as:
1. Dumper
2. Carryall
3. Power shovel
4. Excavator
Answer: B
Laser land leveler works on:
1. Excavation and dumping ratio
2. Drag and fill ratio
3. Cut and fill ratio
4. Digging and scraping ratio
Answer: C
What will be the hydraulic power of a tractor if the fluid flow rate is 16 L/s and pressure is 200 kPa?
1. 3.20 kW
2. 32.0 kW
3. 320 kW
4. None of these
Answer: A
What will be the interest on machine if the purchase price of machine is PKR 800,000 and annual interest rate is 8 percent?
1. 3,520 Rupees
2. 35,200 Rupees
3. 45,200 Rupees
4. 64,000 Rupees
Answer: D Note: 0.08 × 800,000 = 64,000.
What will be the annual depreciation cost of machine if purchase price of machine is PKR 800,000?
1. PKR 7,200
2. PKR 72,000
3. PKR 82,000
4. PKR 96,000
Answer: B
The cotton stripper is used for:
1. Pod picking
2. Ginning of cotton crop
3. Harvesting tuber crop
4. Threshing of cotton crop
Answer: C
The cutting edge just above the landside and share in MB plough is known as:
1. Frog
2. Shin
3. Mold board
4. Beam
Answer: B
In disc plough, the angle used to control the width of furrow and pulverization is called:
1. Disc angle
2. Tilt angle
3. Gang angle
4. Beam angle
Answer: A

Which tillage implement does not invert the soil?
1. Chisel plough
2. Sub soiler
3. Bar harrow
4. All of these
Answer: D
Which cutting depth best describes disc plough?
1. 9–12 cm
2. 15–22 cm
3. 22.5–30 cm
4. 25–38 cm
Answer: C
Which tillage implement does not invert the soil?
1. Chisel plough
2. Sub soiler
3. Bar harrow
4. All of these
Answer: C
In disc harrow the standard disc spacing is:
1. 5 inches
2. 7 inches
3. 10 inches
4. 12 inches
Answer: C
Which one is not PTO operated machine?
1. Rotavator
2. Thresher
3. Broadcaster
4. Seed drill
Answer: D
Which of the followings is a semi-mounted implement?
1. Thresher
2. MB plough
3. Seed drill
4. Disc harrow
Answer: C
The maximum allowable tire slippage for productive usage is:
1. 2–4%
2. 12–15%
3. 25–35%
4. 45–55%
Answer: B
Ballasting is a process to control:
1. Excessive draft
2. Slippage
3. Implement position
4. Weight of implement
Answer: B
In seed drill, one complete revolution of drive wheel means the ground distance covered by seed drill is:
1. 3.14
2. 3.14 times of diameter
3. 3.14 times of diameter squared
4. 3.14 times of radius squared
Answer: B
To calculate discharge rate of boom sprayer, which one of the following procedures is not true?
1. Operate sprayer with tractor at standing single position
2. Maintain pressure of boom
3. Collect boom discharge in polyethylene bags
4. Note time of sample collection
Answer: C
The mechanical connection between tractor and implement is called:
1. Hitching
2. Drafting
3. Attaching
4. Locking
Answer: A
Tachometer is a device that is used to measure:
1. Engine speed
2. PTO speed
3. Cutter bar RPM
4. All of these
Answer: D
A tractor is pulling a 0.745 m wide implement working at depth of 6 inches with average speed of 23.5 m/s, what will be its theoretical field capacity?
1. 0.48 ha/hr
2. 17.5 ha/hr
3. 48.6 ha/hr
4. 1.75 ha/hr
Answer: A
A tractor is pulling a 0.745 m wide implement working at depth of 8 inches, if it takes 7 minutes and 48 seconds to cover 0.044 ha area, what will be the actual field capacity?
1. 0.32
2. 0.47
3. 0.032
4. 0.06
Answer: A
A tractor is pulling a 0.745 m wide implement working at depth of 9 inches with average speed of 23.5 m/s, if it takes 7 minutes and 48 seconds to cover 0.044 ha area, what will be the field efficiency?
1. 100%
2. 96.8%
3. 66.8%
4. 86.6%
Answer: C
If row-to-row distance of seed drill is 190 mm and working width is 1710 mm, then how many rows can be seeded during one pass?
1. 9
2. 11
3. 13
4. 17
Answer: A
A boom sprayer with tank capacity 500 L and 20 nozzles is being calibrated, the average discharge from single nozzle collected is 280 mL in 30 s. What is the discharge rate of boom sprayer?
1. 186 L/hr
2. 672 L/hr
3. 500 L/hr
4. 168 L/hr
Answer: B
A tractor is pulling a 0.745 m wide implement working at depth of 8 inches, if it takes 10 s to cover 20 m distance without load and 18.5 m with load, how much tire has slipped?
1. 5%
2. 6.5%
3. 7.5%
4. 8%
Answer: C
The movement of inlet and exhaust valves is controlled by:
1. Crank shaft
2. Cam shaft
3. Connecting rod
4. None of these
Answer: B
Engine size is given by:
1. Bore and stroke
2. Diameter and volume
3. Bore and volume
4. None of these
Answer: A Note: corrected from keyed “B”.

The compression ratio is the ratio of total cylinder volume to the:
1. Piston displacement
2. Clearance volume
3. Stroke
4. Bore
Answer: B
The function of the connecting rod is to convert the:
1. Potential energy into kinetic energy
2. Linear motion of the piston into rotary motion of the crankshaft
3. The rotary motion of crankshaft into power
4. Linear motion of valve into rotary motion of the crankshaft
Answer: B
In a 4-stroke engine, how many crankshaft revolutions are required to complete four strokes?
1. 4
2. 5
3. 3
4. 2
Answer: D
In four stroke engine, both the valves remain closed in which of the following operations:
1. Compression and Power
2. Suction and Exhaust
3. Compression and Exhaust
4. None of these
Answer: A
The engine which is lighter in weight, working fast and contains fewer components is:
1. Four stroke engine
2. Two stroke engine
3. Rotary engine
4. All of these
Answer: B
Cooling system of diesel engine helps to maintain the temperature of engine at about:
1. 50 °C
2. 90 °C
3. 120 °C
4. 30 °C
Answer: B
In four stroke diesel engines, the sequence of strokes is:
1. Intake, compression, expansion and exhaust stroke
2. Intake, expansion, compression and exhaust stroke
3. Expansion, intake, exhaust and compression stroke
4. Compression, expansion, intake and exhaust stroke
Answer: A
The distance covered by the piston when moving from TDC to BDC and vice versa is known as:
1. Stroke
2. Piston displacement
3. Clearance volume
4. Engine size
Answer: A
Which of the following is not a component of fuel system of a diesel engine?
1. Carburetor
2. Fuel injector
3. Fuel injection pump
4. None of these
Answer: A
Which of the following is acceptable list of primary tillage implements?
1. Disc plow + Bar harrow
2. Cultivator + Bar harrow
3. Disc plow + Subsoiler
4. MB Plow + Disc Harrow
Answer: A
In disc plough, the disc angle is adjusted to control:
1. Depth of cut
2. Width of cut
3. Height of cut
4. None of these
Answer: B
Which of the following can cut the soil up to a depth of 100 cm?
1. MB Plow
2. Disc plow
3. Chisel plow
4. Subsoiler
Answer: D
The tilt angle of disc plow ranges between:
1. 5 to 10 degree
2. 15 to 25 degree
3. 25 to 35 degree
4. 42 to 45 degree
Answer: B
Seeding rate of machine is expressed as:
1. Weight per unit time
2. Weight per unit area
3. Volume per unit time
4. None of these
Answer: B
The size of seed drill is expressed by:
1. Length and width of machine
2. Area covered per unit time
3. Number of furrow openers × spacing between two furrow openers
4. Circumference of drive wheel × width of machine
Answer: C
Which of the following sprayer emerges droplets from delivery gun with an electric charge?
1. ULV sprayer
2. Aerosol sprayer
3. Air blast sprayer
4. Electrodyn sprayer
Answer: D
What is the disadvantage of aerial sprayer?
1. High speed
2. Able to work on wet lands
3. Less crop damage
4. Drift
Answer: D
Which of the following machine makes chaff?
1. Thresher
2. Reaper
3. Mower
4. None of these
Answer: A
Which of the followings is used to perform rubbing action for crop in a combine harvester?
1. Reel
2. Threshing drum
3. Beater
4. Straw walkers
Answer: B
Which of the following is component of separation process in a combine harvester?
1. Reel
2. Auger
3. Straw walkers
4. None of these
Answer: C
Which of the following is parameter for variable cost?
1. Depreciation cost
2. Insurance
3. Taxes
4. Repair and maintenance cost
Answer: D
The component which provides space for the ignition of fuel and houses a piston and connecting rod is:
1. Cylinder
2. Piston
3. Carburetor
4. Connecting rod
Answer: A
In diesel engines, the ignition takes place without the presence of:
1. Air
2. Fuel injector
3. Fuel
4. Spark plug
Answer: D
Which of the followings is not a component of cooling system of tractor:
1. Radiator
2. Fan
3. Water pump
4. Fuel injector
Answer: D
The function of lubrication system is:
1. Reduce friction
2. Act as a cooling agent
3. Act as a cleaning agent
4. All of these
Answer: D
The tillage implement which has a maximum depth of penetration is:
1. Moldboard
2. Disk plow
3. Subsoiler
4. Tine cultivator
Answer: C
The choice of planting equipment depends upon ____ of seed.
1. Color
2. Size
3. Price
4. None of these
Answer: B

Which of the following sprayer emerges droplets from delivery gun with an electric charge?
1. ULV sprayer
2. Aerosol sprayer
3. Air blast sprayer
4. Electrodyn sprayer
Answer: D
In disc plough, the angle at which the plane of cutting edge of disc is inclined to the direction of travel:
1. Disc angle
2. Tilt angle
3. Gang angle
4. None of these
Answer: A
The part of MB plough to which all other parts of plough bottom are attached is:
1. Mould board
2. Land side
3. Frog
4. Coulter
Answer: C
The 5 × 150 mm seed drill is to plant 80 kg of wheat seed per hectare. If diameter of its drive wheel is 1000 mm, then calculate the length necessary to cover 1 ha.
1. 13,333.3 m
2. 1,333.3 m
3. 133.3 m
4. None of these
Answer: A
A 3 × 168 mm seed drill is connected with a 50 HP tractor. The width of the seed drill is:
1. 750 mm
2. 302 mm
3. 790 mm
4. 504 mm
Answer: D
The broken grain received from main outlet of thresher is due to:
1. Less concave clearance
2. Low speed of drum
3. High concave clearance
4. High feed rate
Answer: A
Liquid fuel called as ____ is injected near the TDC acts as a source of ignition in dual fuel engine.
1. Pilot fuel
2. Main fuel
3. Gaseous fuel
4. None of these
Answer: A
In dual fuel engine, the combustion starts similar to:
1. SI engine
2. CI engine
3. Jet engine
4. None of these
Answer: B