ITI Mechanic Tractor (AITT Theory) study guide
ITI Mechanic Tractor (AITT Theory) · Work through your exam, one topic at a time.
The ITI Mechanic Tractor (AITT Theory) examination is the theory paper of the All India Trade Test for the Mechanic Tractor trade, taken by trainees who have completed institutional training under the Craftsman Training Scheme. It is intended for apprentices and ITI trainees preparing to work as tractor service technicians, workshop mechanics, or farm-machinery maintenance staff, and it tests whether you can reason about a tractor as a complete machine rather than as isolated parts. The ITI Mechanic Tractor (AITT Theory) study guide has 12 sections and about 3,917 words.
01Trade Safety, Health and Environment
This domain checks whether you can identify workshop hazards and choose the correct control before work starts. Expect PPE selection, machine guarding, safe jacking, fuel and chemical handling, electrical safety, fire response, first aid and waste disposal.
351 words, about 2 min02Engineering Drawing
Engineering Drawing tests your ability to read views, line types, dimensions, tolerances, fits, surface finish and assembly information. You must extract the manufacturing requirement from a drawing without guessing.
354 words, about 2 min03Materials and Hand Tools
Materials and Hand Tools tests material properties, heat treatment and the safe selection of spanners, sockets, hammers, chisels, files, hacksaws, punches and torque wrenches. Mild steel is ductile and weldable; high-carbon steel is harder and takes an edge but is less tough; cast iron is brittle in tension and good in compression; aluminium is light and corrosion-resistant but soft.
330 words, about 2 min04Basic Fitting
Basic Fitting covers layout, marking, sawing, filing, drilling, tapping, reaming and bench fitting to a specified fit. The exam looks for correct sequence, tool selection and tolerance control.
340 words, about 2 min05Measurement and Workshop Practice
Measurement and Workshop Practice tests instrument selection, least count, zero error, calibration and correct reading. Expect vernier calipers, micrometers, dial gauges, steel rules, feeler gauges and limit gauges.
310 words, about 2 min06Fundamentals of Internal Combustion Engines
Fundamentals of Internal Combustion Engines tests engine terms, cycles, breathing, combustion and power relationships. You should be able to distinguish petrol spark ignition from diesel compression ignition and four-stroke from two-stroke operation.
336 words, about 2 min07Tractor Engine Systems: Fuel, Cooling and Lubrication
Tractor Engine Systems: Fuel, Cooling and Lubrication tests the diesel fuel circuit, air bleeding, cooling-system components, coolant condition and lubrication pressure and filtration. Diesel fuel path: tank → sedimenter/water trap → lift pump → filters → injection pump → injectors → return line.
343 words, about 2 min08Transmission, Clutch, Gearbox and Differential
Transmission, Clutch, Gearbox and Differential tests power flow from engine to wheels, clutch operation and adjustment, gear ratios, differential action, final drive and PTO. The clutch transmits torque through friction between the flywheel, friction plate and pressure plate.
327 words, about 2 min09Steering, Brakes, Wheels and Tyres
Steering, Brakes, Wheels and Tyres tests steering geometry and operation, brake function and bleeding, wheel fitting, tyre size and inflation, and safe ballasting. Ackermann steering makes the inner front wheel turn a tighter angle than the outer wheel, so all wheels roll without excessive scrub.
315 words, about 2 min10Hydraulics, Linkage and Implement Attachment
Hydraulics, Linkage and Implement Attachment tests hydraulic principles, pump and valve operation, cylinder force, three-point linkage adjustment, draft and position control, and safe implement hitching. Hydraulic pressure is force per unit area; flow produces movement.
313 words, about 2 min11Electrical System, Battery and Starting/Charging
Electrical System, Battery and Starting/Charging tests battery construction and testing, starter and solenoid operation, alternator charging, wiring, fuses, lights and safe jump-starting. A 12 V lead-acid battery has six cells.
297 words, about 1 min12Maintenance, Troubleshooting and Inspection
Maintenance, Troubleshooting and Inspection tests scheduled servicing, condition checks, fault diagnosis and record keeping. Expect daily and periodic checks, filter and fluid changes, torque checks and logical fault finding.
301 words, about 2 min