• 50 questions

NOCTI Maintenance Practice Test

Unofficial practice for NOCTI Industrial Maintenance Mechanics: lockout, hydraulics, motors, drives, robots and blueprints.

A plant schedules repairs from vibration readings and oil analysis rather than from the calendar. Which maintenance approach is this?

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, 53 minutes.

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Unofficial practice questions, not affiliated with NOCTI. Bank checked October 9, 2026.

Next step Another shop test: forklift questionsAnother NOCTI test: Computer Technology

All 50 questions

Machinery and Equipment 8

  • A manual gives a tightening value for the bolts of a bearing cap. Which tool tightens a fastener to a specific torque? Wikipedia, Torque wrench. Written to NOCTI Industrial Maintenance Mechanics (2074), Machinery and Equipment
  • A new pump is being coupled to its motor. What is the job of bringing the two shafts in line within a tolerated margin called? Wikipedia, Shaft alignment. Written to NOCTI Industrial Maintenance Mechanics (2074), Machinery and Equipment
  • A plant schedules repairs from vibration readings and oil analysis rather than from the calendar. Which maintenance approach is this? Wikipedia, Predictive maintenance. Written to NOCTI Industrial Maintenance Mechanics (2074), Machinery and Equipment
  • In a rolling-element bearing, what are the two concentric grooved rings that hold the balls or rollers called? Wikipedia, Rolling-element bearing. Written to NOCTI Industrial Maintenance Mechanics (2074), Machinery and Equipment
  • On which kind of equipment is vibration analysis most productive as a condition check? Wikipedia, Predictive maintenance. Written to NOCTI Industrial Maintenance Mechanics (2074), Machinery and Equipment
Show all 50 questions (45 more)

Machinery and Equipment, continued

  • Which measuring instrument amplifies small distances so they can be read, as when checking how far a shaft runs out of true? Wikipedia, Indicator (distance amplifying instrument). Written to NOCTI Industrial Maintenance Mechanics (2074), Machinery and Equipment
  • Which tool is used to measure the width of a gap, such as the clearance between two parts? Wikipedia, Feeler gauge. Written to NOCTI Industrial Maintenance Mechanics (2074), Machinery and Equipment
  • Which type of maintenance checks and services equipment in a planned manner, at scheduled points in time? Wikipedia, Maintenance. Written to NOCTI Industrial Maintenance Mechanics (2074), Machinery and Equipment

Tools and Safety 7

  • A ladder is a little short for the job. Which fix does the OSHA ladder standard rule out? 29 CFR 1910.23(c), Ladders. Written to NOCTI Industrial Maintenance Mechanics (2074), Tools and Safety
  • A lifting sling is too long for the job. Which practice does the OSHA sling standard forbid? 29 CFR 1910.184(c), Slings: safe operating practices. Written to NOCTI Industrial Maintenance Mechanics (2074), Tools and Safety
  • After servicing, who removes a lockout device from an energy isolating device under the OSHA standard? 29 CFR 1910.147(e)(3), The control of hazardous energy (lockout/tagout). Written to NOCTI Industrial Maintenance Mechanics (2074), Tools and Safety
  • Besides its own weight, how much load must a scaffold be capable of supporting without failure? 29 CFR 1926.451(a)(1), Scaffolds: general requirements. Written to NOCTI Industrial Maintenance Mechanics (2074), Tools and Safety
  • Compressed air may be used for cleaning only when it is reduced to less than what pressure, with chip guarding and protective equipment? 29 CFR 1910.242(b), Hand and portable powered tools and equipment, general. Written to NOCTI Industrial Maintenance Mechanics (2074), Tools and Safety
  • On a bench grinder used for offhand grinding, what is the largest opening allowed between the work rest and the wheel? 29 CFR 1910.215(a)(4), Abrasive wheel machinery. Written to NOCTI Industrial Maintenance Mechanics (2074), Tools and Safety
  • Which machine tool rotates the workpiece about an axis while a tool cuts it? Wikipedia, Lathe. Written to NOCTI Industrial Maintenance Mechanics (2074), Tools and Safety

Electronics and Electrical Principles 6

  • A heater draws 12.5 amperes from a 240-volt supply. Using P = E x I, how much power does it use? Navy Electricity and Electronics Training Series, Module 1 (NAVEDTRA 14173), chapter 3; the answer is arithmetic that is worked out again. Written to NOCTI Industrial Maintenance Mechanics (2074), Electronics and Electrical Principles
  • A relay coil rated 0.05 ampere is supplied at 24 volts. Using P = E x I, how much power does the coil use? Own question; the answer is worked out again from the numbers in it. Power formula from Navy Electricity and Electronics Training Series, Module 1 (NAVEDTRA 14173), chapter 3. Written to NOCTI Industrial Maintenance Mechanics (2074), Electronics and Electrical Principles
  • The coil of a control relay measures 480 ohms. Supplied at 24 volts, what current does Ohm's law give? Own question; the answer is worked out again from the numbers in it. Ohm's law as taught in Navy Electricity and Electronics Training Series, Module 1 (NAVEDTRA 14173), chapter 3. Written to NOCTI Industrial Maintenance Mechanics (2074), Electronics and Electrical Principles
  • Ladder logic programs for PLCs are named for their look. What does a ladder diagram consist of? Wikipedia, Ladder logic. Written to NOCTI Industrial Maintenance Mechanics (2074), Electronics and Electrical Principles
  • What is a programmable logic controller (PLC)? Wikipedia, Programmable logic controller. Written to NOCTI Industrial Maintenance Mechanics (2074), Electronics and Electrical Principles
  • Which is the most widely used programming language for computer numerical control (CNC) machine tools? Wikipedia, G-code. Written to NOCTI Industrial Maintenance Mechanics (2074), Electronics and Electrical Principles

Hydraulics and Pneumatics 7

  • In a hydraulic jack a 50-pound force pushes on a small piston of 2 square inches. The large piston has an area of 40 square inches. What load can it lift, ignoring losses? Own question; the answer is worked out again from the numbers in it. The hydraulic press as explained in Wikipedia, Pascal's law. Written to NOCTI Industrial Maintenance Mechanics (2074), Hydraulics and Pneumatics
  • Oil at 1,200 pounds per square inch enters the cap end of a cylinder whose piston has an area of 5 square inches. Ignoring friction, what force does the rod exert? Wikipedia, Hydraulic cylinder; the answer is arithmetic that is worked out again. Written to NOCTI Industrial Maintenance Mechanics (2074), Hydraulics and Pneumatics
  • What does a hydraulic accumulator do in a circuit? Wikipedia, Hydraulic accumulator. Written to NOCTI Industrial Maintenance Mechanics (2074), Hydraulics and Pneumatics
  • What is the basic difference between the working fluid of a hydraulic system and that of a pneumatic system? Wikipedia, Hydraulic machinery. Written to NOCTI Industrial Maintenance Mechanics (2074), Hydraulics and Pneumatics
  • Which component limits the pressure in a hydraulic system so that excessive pressure cannot build up? Wikipedia, Relief valve. Written to NOCTI Industrial Maintenance Mechanics (2074), Hydraulics and Pneumatics
  • Which principle says that pressure applied to a fluid in a closed system is transmitted equally everywhere and in all directions? Wikipedia, Hydraulic machinery. Written to NOCTI Industrial Maintenance Mechanics (2074), Hydraulics and Pneumatics
  • Which valve normally lets fluid pass through it one way only? Wikipedia, Check valve. Written to NOCTI Industrial Maintenance Mechanics (2074), Hydraulics and Pneumatics

Motors and Motor Controls 7

  • A 4-pole, 60-hertz induction motor has a synchronous speed of 1,800 rpm and runs at 1,746 rpm under load. What is its slip? Own question; the answer is worked out again from the numbers in it. Slip as defined in Wikipedia, Induction motor. Written to NOCTI Industrial Maintenance Mechanics (2074), Motors and Motor Controls
  • A 60-hertz AC motor has 4 poles. Synchronous speed in revolutions per second is 2 x frequency / poles. What is it in revolutions per minute? Wikipedia, Induction motor; the answer is arithmetic that is worked out again. Written to NOCTI Industrial Maintenance Mechanics (2074), Motors and Motor Controls
  • A conveyor needs its AC motor to run at adjustable speeds. How does a variable-frequency drive control the motor? Wikipedia, Variable-frequency drive. Written to NOCTI Industrial Maintenance Mechanics (2074), Motors and Motor Controls
  • A positioning axis needs precise control of angle and velocity. What makes a servomotor suited to it? Wikipedia, Servomotor. Written to NOCTI Industrial Maintenance Mechanics (2074), Motors and Motor Controls
  • In an induction motor, how does the torque-producing current get into the rotor? Wikipedia, Induction motor. Written to NOCTI Industrial Maintenance Mechanics (2074), Motors and Motor Controls
  • Which part of a brushed DC motor reverses the current in the coil every half cycle so the motor keeps turning the same way? Wikipedia, Brushed DC electric motor. Written to NOCTI Industrial Maintenance Mechanics (2074), Motors and Motor Controls
  • Why does an induction motor always run slightly slower than synchronous speed? Wikipedia, Induction motor. Written to NOCTI Industrial Maintenance Mechanics (2074), Motors and Motor Controls

Mechanism Drives 5

  • A 20-tooth gear turning at 900 rpm drives a 60-tooth gear. How fast does the 60-tooth gear turn? Own question; the answer is worked out again from the numbers in it. Gear ratio as defined in Wikipedia, Gear train. Written to NOCTI Industrial Maintenance Mechanics (2074), Mechanism Drives
  • A pry bar has an effort arm of 6 feet and a resistance arm of 1.5 feet. Ignoring friction, what effort lifts a 200-pound load? Navy training text Basic Machines (NAVEDTRA 14037), chapter 1, Levers; the answer is arithmetic that is worked out again. Written to NOCTI Industrial Maintenance Mechanics (2074), Mechanism Drives
  • A single-start worm drives a 40-tooth worm wheel. By what ratio is the speed reduced? Wikipedia, Worm drive; the answer is arithmetic that is worked out again. Written to NOCTI Industrial Maintenance Mechanics (2074), Mechanism Drives
  • On a plain belt drive the speed ratio may not exactly equal the ratio of the pulley diameters. What is the cause, and what largely solves it? Wikipedia, Belt (mechanical). Written to NOCTI Industrial Maintenance Mechanics (2074), Mechanism Drives
  • What is the toothed wheel that drives a roller chain called? Wikipedia, Roller chain. Written to NOCTI Industrial Maintenance Mechanics (2074), Mechanism Drives

Industrial Robotics Systems 4

  • In an industrial robot system, what is the end-effector? OSHA Technical Manual, Section IV, Chapter 4, Industrial Robot Systems and Industrial Robot System Safety. Written to NOCTI Industrial Maintenance Mechanics (2074), Industrial Robotics Systems
  • Most robot systems are programmed in manual mode with a portable control device. What is that device called? OSHA Technical Manual, Section IV, Chapter 4, Industrial Robot Systems and Industrial Robot System Safety. Written to NOCTI Industrial Maintenance Mechanics (2074), Industrial Robotics Systems
  • What defines an articulated robot? OSHA Technical Manual, Section IV, Chapter 4, Industrial Robot Systems and Industrial Robot System Safety. Written to NOCTI Industrial Maintenance Mechanics (2074), Industrial Robotics Systems
  • Which robot structure uses two parallel rotary joints to give compliance in a plane? OSHA Technical Manual, Section IV, Chapter 4, Industrial Robot Systems and Industrial Robot System Safety. Written to NOCTI Industrial Maintenance Mechanics (2074), Industrial Robotics Systems

Blueprints and Schematics 6

  • A shaft diameter is dimensioned 2.500 inches plus or minus 0.005 inch. Which measured diameter is within tolerance? Own question; the answer is worked out again from the numbers in it. Written to NOCTI Industrial Maintenance Mechanics (2074), Blueprints and Schematics
  • In multiview projection, up to how many primary views of an object can be produced? Wikipedia, Multiview orthographic projection. Written to NOCTI Industrial Maintenance Mechanics (2074), Blueprints and Schematics
  • On an engineering drawing, what do short-dashed lines represent? Wikipedia, Engineering drawing. Written to NOCTI Industrial Maintenance Mechanics (2074), Blueprints and Schematics
  • What is an engineering tolerance? Wikipedia, Engineering tolerance. Written to NOCTI Industrial Maintenance Mechanics (2074), Blueprints and Schematics
  • Where on a drawing would you look for who drew it, who approved it, the units of dimensions and the drawing number? Wikipedia, Engineering drawing. Written to NOCTI Industrial Maintenance Mechanics (2074), Blueprints and Schematics
  • Which line on a drawing is alternately long- and short-dashed and marks the axis of a circular feature such as a hole? Wikipedia, Engineering drawing. Written to NOCTI Industrial Maintenance Mechanics (2074), Blueprints and Schematics

How this list was compiled: Our own questions, written to the competency list of the Job Ready Credential Blueprint for Industrial Maintenance Mechanics (code 2074, version 01) that NOCTI publishes at https://www.nocti.org/wp-content/uploads/2020/09/JRIndMaintMech2074.pdf , read 2026-10-09: a written assessment of 169 questions in 3 hours over eight areas (Machinery and Equipment 16%; Tools and Safety 14%; Electronics and Electrical Principles 13%; Hydraulics and Pneumatics 14%; Motors and Motor Controls 14%; Mechanism Drives 10%; Industrial Robotics Systems 8%; Blueprints and Schematics 11%), plus a performance assessment of four jobs. This bank holds 50 in those proportions. Every rule and definition was read on the public page named under its question, each opened 2026-10-09: OSHA standards in 29 CFR 1910 and 1926, the OSHA Technical Manual chapter on industrial robots, the Navy training texts Basic Machines (NAVEDTRA 14037) and Navy Electricity and Electronics Training Series Module 1 (NAVEDTRA 14173) in the copies at archive.org, and Wikipedia. Every load, speed and voltage is made up for the drill, and each computed answer is arithmetic that is worked out again. Licence: Questions, choices and explanations are original work of this site. The Navy training texts are works of the United States Navy approved for public release, and no question or example is copied from them.

How it works

This free NOCTI maintenance practice test has 50 questions of our own, sorted by the eight areas of the Job Ready Industrial Maintenance Mechanics blueprint, code 2074. It is unofficial and not affiliated with, endorsed by or sponsored by NOCTI.

Read the full guide

Eight areas, in the blueprint's shares

Machinery and Equipment is 16% of the written assessment. Tools and Safety, Hydraulics and Pneumatics, and Motors and Motor Controls are 14% each. Electronics and Electrical Principles is 13%, Blueprints and Schematics 11%, Mechanism Drives 10% and Industrial Robotics Systems 8%.

Timed like the real one

Exam mode runs all 50 questions in 53 minutes, the pace of the real written assessment. The blueprint prints no pass mark, so the result is a score with no verdict.

What is not practiced here

Reading hydraulic, pneumatic and electrical symbols and real prints needs drawings, and this bank has none. The hands-on jobs are left to the shop: a pneumatic circuit, a gear drive, an electrical control fault and reading an industrial blueprint, which is 40% of the performance score.

  • Safety answers cite the OSHA paragraph, such as 1910.147 for lockout and 1910.215 for grinders. Open the rule under a missed question.

Questions and answers

Which NOCTI maintenance test does this practice test follow?

Industrial Maintenance Mechanics, code 2074. NOCTI also publishes Building Trades Maintenance (4012), a different blueprint with areas such as carpentry, masonry and painting. Ask your teacher which code your program gives.

How many questions are on the NOCTI Industrial Maintenance Mechanics test?

The blueprint lists 169 written questions with an administration time of 3 hours, given in one, two or three sessions. The four performance jobs take another 3 hours.

Where do the answers to these maintenance questions come from?

OSHA standards in 29 CFR 1910 and 1926, the OSHA Technical Manual chapter on industrial robots, the Navy texts Basic Machines and NEETS Module 1, and Wikipedia for components. Each source is linked under its question.

Where is the NOCTI Industrial Maintenance Mechanics blueprint?

It is a free PDF on nocti.org/credentials/blueprints. It gives the competencies, the weight of each area and ten sample questions. Those samples are not used here: every question on this page was written for it.

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