• 50 questions

NOCTI Agriculture Mechanics Practice Test

Unofficial practice for NOCTI Agriculture Mechanics: tractor safety, welding, engines, farm structures, agribusiness and precision technology.

Which tool is a pointed weight hung from a string to give a vertical reference line?

Pick an answer, then press Check answer. Then you see Correct or Not quite, with the reason. Keys: A to D pick, Enter checks.

Print covers the next 50 questions. Share this set copies a link to the same questions in the same order.

Exam mode: 50 questions, 63 minutes.

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Unofficial practice questions, not affiliated with NOCTI. Bank checked October 16, 2026.

Next step More farm topics: Praxis AgricultureAnother NOCTI test: Carpentry

All 50 questions

Health and Safety 7

  • A baler plugs with hay in the field. Under the farm equipment guarding rule, what is done before anyone unclogs it? OSHA, 29 CFR 1928.57, paragraph (a)(6)(iii). Written to NOCTI Agriculture Mechanics (2303), Health and Safety
  • A farm shop has no clinic or hospital in near proximity. What does the first aid standard require at that workplace? OSHA, 29 CFR 1910.151, paragraph (b). Written to NOCTI Agriculture Mechanics (2303), Health and Safety
  • A loader is locked out for repair, but its hydraulic system still holds pressure. What does the lockout standard require for that stored energy? OSHA, 29 CFR 1910.147, paragraph (d)(5)(i). Written to NOCTI Agriculture Mechanics (2303), Health and Safety
  • A tractor is fitted with a roll-over protective structure (ROPS). What must the employer make sure the operator does while the tractor is moving? OSHA, 29 CFR 1928.51, paragraph (b)(2). Written to NOCTI Agriculture Mechanics (2303), Health and Safety
  • Under the farm equipment rule, who may ride on farm field equipment besides the operator? OSHA, 29 CFR 1928.57, paragraph (a)(6)(ii). Written to NOCTI Agriculture Mechanics (2303), Health and Safety
  • What must guard the power take-off (PTO) shaft of a tractor? OSHA, 29 CFR 1928.57, paragraph (b)(1)(i). Written to NOCTI Agriculture Mechanics (2303), Health and Safety
  • Which emblem marks a vehicle that by design moves at 25 mph or less on public roads, such as a tractor? OSHA, 29 CFR 1910.145, paragraph (d)(10). Written to NOCTI Agriculture Mechanics (2303), Health and Safety
Show all 50 questions (43 more)

Welding, Fabrication, and Repair (CNC) 12

  • A bracket is cut off with a torch in the shop, near stored hay. How long must a fire watch be kept after the cutting stops? OSHA, 29 CFR 1910.252, paragraph (a)(2)(iii)(B). Written to NOCTI Agriculture Mechanics (2303), Welding, Fabrication, and Repair (CNC)
  • A CNC plasma table follows a program that tells its motors where to move, how fast and along what path. What is the most widely used CNC programming language called? Wikipedia, G-code. Written to NOCTI Agriculture Mechanics (2303), Welding, Fabrication, and Repair (CNC)
  • A shop drawing calls for steel plate 3/8 inch thick. What is that thickness as a decimal? Written to the NOCTI Job Ready Credential Blueprint for Agriculture Mechanics (2303), Welding, Fabrication, and Repair (CNC); the answer is arithmetic on the numbers in the question, worked twice
  • A welding helmet has a cracked shield. Why does the Army welding manual say not to weld with it? US Army TM 9-237, Welding Theory and Application (1976), paragraph 4-2, welding helmets and shields. Written to NOCTI Agriculture Mechanics (2303), Welding, Fabrication, and Repair (CNC)
  • An oxyacetylene torch has just been lit. To which flame is it adjusted first, before a carburizing or oxidizing flame is set? US Army TM 9-237, Welding Theory and Application (1976), paragraph 6-3, flame types. Written to NOCTI Agriculture Mechanics (2303), Welding, Fabrication, and Repair (CNC)
  • In gas tungsten-arc (TIG) welding, what kind of electrode draws the arc? US Army TM 9-237, Welding Theory and Application (1976), paragraph 3-2, arc welding. Written to NOCTI Agriculture Mechanics (2303), Welding, Fabrication, and Repair (CNC)
  • On an E6010 arc welding electrode, what do the first two digits, 60, stand for? US Army TM 9-237, Welding Theory and Application (1976), paragraph 5-25, electrodes and their use. Written to NOCTI Agriculture Mechanics (2303), Welding, Fabrication, and Repair (CNC)
  • What does the Army welding manual warn about oil or grease near oxygen? US Army TM 9-237, Welding Theory and Application (1976), warning page. Written to NOCTI Agriculture Mechanics (2303), Welding, Fabrication, and Repair (CNC)
  • What is the highest pressure at which acetylene may be used from a torch outfit? OSHA, 29 CFR 1910.253, paragraph (a)(2). Written to NOCTI Agriculture Mechanics (2303), Welding, Fabrication, and Repair (CNC)
  • Which cutting process uses an accelerated jet of hot plasma and works on electrically conductive materials? Wikipedia, Plasma cutting. Written to NOCTI Agriculture Mechanics (2303), Welding, Fabrication, and Repair (CNC)
  • Which list names the five basic types of weld joints? US Army TM 9-237, Welding Theory and Application (1976), chapter 3, joints. Written to NOCTI Agriculture Mechanics (2303), Welding, Fabrication, and Repair (CNC)
  • Which welding process feeds a consumable bare wire electrode into the weld at a controlled speed, under a blanket of shielding gas? US Army TM 9-237, Welding Theory and Application (1976), paragraph 5-22. Written to NOCTI Agriculture Mechanics (2303), Welding, Fabrication, and Repair (CNC)

Power Equipment and Machinery (Infield Equipment) 10

  • A chain saw and a string trimmer use two-stroke cycle engines. How often does the piston of such an engine make a power stroke? US Army TM 9-8000, Principles of Automotive Vehicles (1985), chapter 2, two-stroke cycle. Written to NOCTI Agriculture Mechanics (2303), Power Equipment and Machinery (Infield Equipment)
  • A lead-acid battery cell gives about 2 volts. How many cells, connected in series, make a 12-volt battery? US Army TM 9-8000, Principles of Automotive Vehicles (1985), chapter 12. Written to NOCTI Agriculture Mechanics (2303), Power Equipment and Machinery (Infield Equipment); the arithmetic was worked twice
  • A service manual lists the viscosity of an engine oil. What does viscosity indicate about a fluid? US Army TM 9-8000, Principles of Automotive Vehicles (1985), paragraph 5-3. Written to NOCTI Agriculture Mechanics (2303), Power Equipment and Machinery (Infield Equipment)
  • On a turn, the inner drive wheel of a tractor slows down while the outer one keeps going. Which unit in the axle lets the two rotate at different speeds? US Army TM 9-8000, Principles of Automotive Vehicles (1985), chapter 29, differentials. Written to NOCTI Agriculture Mechanics (2303), Power Equipment and Machinery (Infield Equipment)
  • The original Type 1 tractor PTO shaft has six splines. At what speed is it meant to turn? Wikipedia, Power take-off, Technical standardization. Written to NOCTI Agriculture Mechanics (2303), Power Equipment and Machinery (Infield Equipment)
  • Tractors and implements from different makers are often linked by ISO 11783, commonly called ISOBUS. What is ISOBUS? Wikipedia, ISO 11783. Written to NOCTI Agriculture Mechanics (2303), Power Equipment and Machinery (Infield Equipment)
  • What is a glow plug in a diesel engine for? US Army TM 9-8000, Principles of Automotive Vehicles (1985), definition of terms. Written to NOCTI Agriculture Mechanics (2303), Power Equipment and Machinery (Infield Equipment)
  • What is a grease (Zerk) fitting on a machine for? Wikipedia, Grease fitting. Written to NOCTI Agriculture Mechanics (2303), Power Equipment and Machinery (Infield Equipment)
  • What is the three-point hitch on a tractor for? Wikipedia, Three-point hitch. Written to NOCTI Agriculture Mechanics (2303), Power Equipment and Machinery (Infield Equipment)
  • Which sensor is a resistor whose resistance depends strongly on temperature? Wikipedia, Thermistor. Written to NOCTI Agriculture Mechanics (2303), Power Equipment and Machinery (Infield Equipment)

Agricultural Structures 12

  • A 120-volt heater in a brooder house has a resistance of 15 ohms. How much current does it draw? Wikipedia, Ohm's law. Written to NOCTI Agriculture Mechanics (2303), Agricultural Structures; the arithmetic was worked twice
  • A chemical injector is added to an irrigation line fed from a well that also supplies the house. What does a backflow prevention device on the line protect? Wikipedia, Backflow prevention device. Written to NOCTI Agriculture Mechanics (2303), Agricultural Structures
  • A farm level is set up. The rod reads 5.20 feet on a benchmark of elevation 100.00 feet, then 7.70 feet on a barn footing. What is the elevation of the footing? Wikipedia, Levelling, Procedure. Written to NOCTI Agriculture Mechanics (2303), Agricultural Structures; the arithmetic was worked twice
  • A hoop house, or polytunnel, is typically a steel tunnel covered in which material? Wikipedia, Polytunnel. Written to NOCTI Agriculture Mechanics (2303), Agricultural Structures
  • The corner of a new machine shed is checked with a right triangle. The marks sit 9 feet along one wall line and 12 feet along the other. What must the diagonal between them read? Written to the NOCTI Job Ready Credential Blueprint for Agriculture Mechanics (2303), Agricultural Structures; the answer is arithmetic on the numbers in the question, worked twice
  • In a post-frame barn, purlins and girts are both horizontal members. Where is each found? Wikipedia, Purlin, and Wikipedia, Girt. Written to NOCTI Agriculture Mechanics (2303), Agricultural Structures
  • What does a tile drainage system remove from a field? Wikipedia, Tile drainage. Written to NOCTI Agriculture Mechanics (2303), Agricultural Structures
  • What is contour plowing? Wikipedia, Contour plowing. Written to NOCTI Agriculture Mechanics (2303), Agricultural Structures
  • What is the goal of drip irrigation? Wikipedia, Drip irrigation. Written to NOCTI Agriculture Mechanics (2303), Agricultural Structures
  • What makes a ground fault circuit interrupter (GFCI) interrupt a circuit in a barn? Wikipedia, Residual-current device. Written to NOCTI Agriculture Mechanics (2303), Agricultural Structures
  • Which building method uses large poles or posts for the vertical support, with girts for the horizontal support? Wikipedia, Pole building framing. Written to NOCTI Agriculture Mechanics (2303), Agricultural Structures
  • Which tool is a pointed weight hung from a string to give a vertical reference line? Wikipedia, Plumb bob. Written to NOCTI Agriculture Mechanics (2303), Agricultural Structures

Agribusiness 5

  • A farm lists assets of $500,000 and liabilities of $180,000. What is its net worth? Wikipedia, Net worth. Written to NOCTI Agriculture Mechanics (2303), Agribusiness; the arithmetic was worked twice
  • A farmer pledges a combine to the bank to secure a loan. What is the pledged property called? Wikipedia, Collateral (finance). Written to NOCTI Agriculture Mechanics (2303), Agribusiness
  • What is an agricultural cooperative? Wikipedia, Agricultural cooperative. Written to NOCTI Agriculture Mechanics (2303), Agribusiness
  • Which financial statement shows a farm business's revenues and expenses during a particular period? Wikipedia, Income statement. Written to NOCTI Agriculture Mechanics (2303), Agribusiness
  • Which USDA Farm Service Agency loan is designed to help buy livestock, equipment, feed, seed and supplies? USDA Farm Service Agency, Farm Operating Loans, What It Is. Written to NOCTI Agriculture Mechanics (2303), Agribusiness

Agriculture Engineering 4

  • An auto-steer tractor uses real-time kinematic (RTK) positioning. What does RTK add to ordinary satellite navigation? Wikipedia, Real-time kinematic positioning. Written to NOCTI Agriculture Mechanics (2303), Agriculture Engineering
  • The GPS constellation is arranged so that a user can view at least how many satellites from virtually any point on the planet? NOAA National Ocean Service, What is GPS?. Written to NOCTI Agriculture Mechanics (2303), Agriculture Engineering
  • What is variable rate application (VRA)? Wikipedia, Variable rate application. Written to NOCTI Agriculture Mechanics (2303), Agriculture Engineering
  • Which computer system analyzes and displays geographically referenced information, such as layers of field data tied to locations? U.S. Geological Survey, What is a geographic information system (GIS)?. Written to NOCTI Agriculture Mechanics (2303), Agriculture Engineering

How this list was compiled: Our own questions, written to the competency list of the Job Ready Credential Blueprint for Agriculture Mechanics (code 2303, version 01, copyright 2026) that NOCTI publishes at https://www.nocti.org/wp-content/uploads/2026/08/JRAgMech2303.pdf , read 2026-10-15 and again 2026-10-16: a written assessment of 120 questions in 2 hours and 30 minutes over six areas (Health and Safety 13%; Welding, Fabrication, and Repair (CNC) 25%; Power Equipment and Machinery (Infield Equipment) 21%; Agricultural Structures 23%; Agribusiness 10%; Agriculture Engineering 8%), plus a performance assessment of six jobs. This bank holds 50 in those proportions. The Teacher assessment for Agriculture Mechanics (code 5302) prints the same six areas and weights. Every rule and definition was read on 2026-10-15 or 2026-10-16 on the public page named under its question: OSHA standards in 29 CFR 1910 and the agriculture standards in 29 CFR 1928 on osha.gov; the US Army manuals TM 9-237 Welding Theory and Application (1976), TM 9-8000 Principles of Automotive Vehicles (1985) and FM 5-426 Carpentry (1995), in the copies at archive.org; the USDA Farm Service Agency, the U.S. Geological Survey and NOAA; and Wikipedia. Every length, load and dollar figure is made up for the drill, and each computed answer is arithmetic that was worked twice. Licence: Questions, choices and explanations are original work of this site. The Army manuals are works of the United States government approved for public release, and no question or example is copied from them.

How it works

Fifty questions of our own for the NOCTI Agriculture Mechanics test, sorted by the six areas of the Job Ready blueprint, code 2303. This free practice test is unofficial and not affiliated with, endorsed by or sponsored by NOCTI.

Read the full guide

Six areas, in the blueprint's shares

Welding, Fabrication, and Repair (CNC) is 25% of the written assessment, Agricultural Structures 23% and Power Equipment and Machinery 21%. Health and Safety is 13%, Agribusiness 10% and Agriculture Engineering 8%. The 50 questions here split 12, 12, 10, 7, 5 and 4.

Timed at the real pace

A timed round of all 50 questions in 63 minutes keeps the pace of the written assessment. The blueprint gives no pass mark, so the result is a score only.

What stays in the shop

The six performance jobs are not practiced here: a square groove butt weld, oxyacetylene cutting, diagnosing a gas engine, wiring a switch to a light, marking a common rafter and setting up a farm level.

  • Safety answers cite the OSHA paragraph, such as 1928.57 for PTO shields and 1928.51 for ROPS and seatbelts.
  • Leveling: the benchmark elevation plus the first rod reading is the height of the instrument. Subtract the next rod reading.
  • On an electrode such as E6010, the first two digits are tensile strength in thousands of psi.

Questions and answers

How many questions are on the NOCTI Agriculture Mechanics test?

The Job Ready blueprint, code 2303, lists 120 written questions in 2 hours and 30 minutes, given in one, two or three sessions. The six performance jobs take another 3 hours.

Is this a NOCTI agricultural mechanics practice test?

Yes. NOCTI's own title for the assessment is Agriculture Mechanics, code 2303, and its blueprint list has no separate agricultural mechanics test. This page follows its six areas with questions written for this site, not NOCTI's.

Is this also practice for the NOCTI Teacher test in agriculture mechanics?

Yes. The Teacher assessment, code 5302, prints the same six areas with the same weights and 120 questions in 2 hours and 30 minutes.

Where is the NOCTI Agriculture Mechanics blueprint?

On nocti.org/credentials/blueprints, as a free PDF with the competencies, the share of each area and ten sample questions. None of the samples is used or reworded on this page.

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