• 52 questions

NOCTI Electronics Technology Practice Test

Unofficial practice for NOCTI Electronics Technology: safety, Ohm's law, logic gates, transistors, test equipment, DC, AC and soldering.

Why does the OSHA rule bar rings, watch bands and bracelets where they might touch exposed energized parts?

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 52 questions. Share this set copies a link to the same questions in the same order.

Exam mode: 52 questions, 51 minutes.

More options

Unofficial practice questions, not affiliated with NOCTI. Bank checked October 13, 2026.

Next step Weak on safety rules? OSHA 10 questionsMore circuits: ham radio Technician questions

All 52 questions

Safety Practices 5

  • Equipment has been switched off for repair. What does the OSHA rule require for capacitors whose stored energy might endanger personnel? OSHA, 29 CFR 1910.333. Written to NOCTI Electronics Technology (4135), Safety Practices
  • How does OSHA carry out its mission of safe and healthful working conditions? OSHA, About OSHA (osha.gov). Written to NOCTI Electronics Technology (4135), Safety Practices
  • Live parts are normally de-energized before work on or near them. Below what voltage to ground does the OSHA rule allow an exception, when burns and arcs are no greater risk? OSHA, 29 CFR 1910.333. Written to NOCTI Electronics Technology (4135), Safety Practices
  • Under the OSHA lockout/tagout standard, what is a lockout device attached to? OSHA, 29 CFR 1910.147. Written to NOCTI Electronics Technology (4135), Safety Practices
  • Why does the OSHA rule bar rings, watch bands and bracelets where they might touch exposed energized parts? OSHA, 29 CFR 1910.333. Written to NOCTI Electronics Technology (4135), Safety Practices
Show all 52 questions (47 more)

Fundamental Electrical Principles and Theory 8

  • A 4 kΩ resistor has 12 V across it. How much current flows through it? US Navy NEETS Module 1, Introduction to Matter, Energy, and Direct Current, chapter 3, Ohm's law. Written to NOCTI Electronics Technology (4135), Fundamental Electrical Principles and Theory; the arithmetic was worked twice
  • A capacitor is marked 22 µF. What is that in farads? Wikipedia, Metric prefix, List of SI prefixes. Written to NOCTI Electronics Technology (4135), Fundamental Electrical Principles and Theory; the arithmetic was worked twice
  • A resistor has bands of red, violet, orange and gold. What is its value? Wikipedia, Electronic color code, Resistors. Written to NOCTI Electronics Technology (4135), Fundamental Electrical Principles and Theory; the arithmetic was worked twice
  • A soldering station draws 0.5 A from a 120 V outlet. How much power does it use? US Navy NEETS Module 1, Introduction to Matter, Energy, and Direct Current, chapter 3, power. Written to NOCTI Electronics Technology (4135), Fundamental Electrical Principles and Theory; the arithmetic was worked twice
  • Currents of 2 A and 3 A flow into a junction. One of the two wires leaving it carries 1.5 A. How much does the other carry? US Navy NEETS Module 1, Introduction to Matter, Energy, and Direct Current, chapter 3. Written to NOCTI Electronics Technology (4135), Fundamental Electrical Principles and Theory; the arithmetic was worked twice
  • On a schematic, which symbol stands for a light-emitting diode? US Navy NEETS Module 7, Introduction to Solid-State Devices and Power Supplies, chapter 3, optoelectronic devices. Written to NOCTI Electronics Technology (4135), Fundamental Electrical Principles and Theory
  • What is the law of magnetic poles? US Navy NEETS Module 1, Introduction to Matter, Energy, and Direct Current, chapter 1, magnetism. Written to NOCTI Electronics Technology (4135), Fundamental Electrical Principles and Theory
  • Which class of material lies between conductors and insulators in its ability to conduct an electric current? US Navy NEETS Module 1, Introduction to Matter, Energy, and Direct Current, chapter 1, conductors, semiconductors and insulators. Written to NOCTI Electronics Technology (4135), Fundamental Electrical Principles and Theory

Digital Electronic Circuits 7

  • A 4-bit register holds the bits 1101. What number is that in decimal? US Navy NEETS Module 13, Introduction to Number Systems and Logic Circuits, chapter 1. Written to NOCTI Electronics Technology (4135), Digital Electronic Circuits; the arithmetic was worked twice
  • A memory address ends in the hexadecimal digits 3C. What is 3C in decimal? US Navy NEETS Module 13, Introduction to Number Systems and Logic Circuits, chapter 1. Written to NOCTI Electronics Technology (4135), Digital Electronic Circuits; the arithmetic was worked twice
  • A NAND gate is an AND gate with what added at the output? US Navy NEETS Module 13, Introduction to Number Systems and Logic Circuits, chapter 2. Written to NOCTI Electronics Technology (4135), Digital Electronic Circuits
  • Both inputs of a two-input exclusive OR gate are HIGH. What is the output? US Navy NEETS Module 13, Introduction to Number Systems and Logic Circuits, chapter 3. Written to NOCTI Electronics Technology (4135), Digital Electronic Circuits
  • What kind of circuit is a flip-flop? US Navy NEETS Module 13, Introduction to Number Systems and Logic Circuits, chapter 3. Written to NOCTI Electronics Technology (4135), Digital Electronic Circuits
  • When is the output of an AND gate TRUE? US Navy NEETS Module 13, Introduction to Number Systems and Logic Circuits, chapter 2. Written to NOCTI Electronics Technology (4135), Digital Electronic Circuits
  • Which kind of signal can take only one of a finite number of values at any given time? Wikipedia, Digital signal. Written to NOCTI Electronics Technology (4135), Digital Electronic Circuits

Electronic Device Analysis and Applications 10

  • A full-wave rectifier is fed from a 60 Hz line. What is the ripple frequency at its output? US Navy NEETS Module 7, Introduction to Solid-State Devices and Power Supplies, chapter 4. Written to NOCTI Electronics Technology (4135), Electronic Device Analysis and Applications; the arithmetic was worked twice
  • An op-amp summing stage has a 100 kΩ feedback resistor and 10 kΩ input resistors. What is its gain? US Navy NEETS Module 8, Introduction to Amplifiers, chapter 3. Written to NOCTI Electronics Technology (4135), Electronic Device Analysis and Applications; the arithmetic was worked twice
  • For a transistor to work as an amplifier, how are its two junctions biased? US Navy NEETS Module 7, Introduction to Solid-State Devices and Power Supplies, chapter 2. Written to NOCTI Electronics Technology (4135), Electronic Device Analysis and Applications
  • How does a TRIAC differ from an SCR? US Navy NEETS Module 7, Introduction to Solid-State Devices and Power Supplies, chapter 3. Written to NOCTI Electronics Technology (4135), Electronic Device Analysis and Applications
  • On a board of integrated circuits, which part is connected across the power supply close to each active device to reduce EMI? Wikipedia, Electromagnetic interference, EMI in integrated circuits. Written to NOCTI Electronics Technology (4135), Electronic Device Analysis and Applications
  • What decides the color of the light from an LED? US Navy NEETS Module 7, Introduction to Solid-State Devices and Power Supplies, chapter 3. Written to NOCTI Electronics Technology (4135), Electronic Device Analysis and Applications
  • What is a Zener diode frequently used for? US Navy NEETS Module 7, Introduction to Solid-State Devices and Power Supplies, chapter 1. Written to NOCTI Electronics Technology (4135), Electronic Device Analysis and Applications
  • What is the basic purpose of a silicon controlled rectifier (SCR)? US Navy NEETS Module 7, Introduction to Solid-State Devices and Power Supplies, chapter 3. Written to NOCTI Electronics Technology (4135), Electronic Device Analysis and Applications
  • What is the phase relationship between the input and the output of a common-emitter amplifier? US Navy NEETS Module 7, Introduction to Solid-State Devices and Power Supplies, chapter 2. Written to NOCTI Electronics Technology (4135), Electronic Device Analysis and Applications
  • Which element of a field-effect transistor is comparable to the base of a bipolar transistor? US Navy NEETS Module 7, Introduction to Solid-State Devices and Power Supplies, chapter 3. Written to NOCTI Electronics Technology (4135), Electronic Device Analysis and Applications

Electronic Testing Equipment 5

  • Before an ohmmeter is connected to a circuit, what must be true of the circuit? US Navy NEETS Module 3, Introduction to Circuit Protection, Control, and Measurement, chapter 1, ohmmeters. Written to NOCTI Electronics Technology (4135), Electronic Testing Equipment
  • How does an electronic frequency counter arrive at its reading? US Navy NEETS Module 16, Introduction to Test Equipment, chapter 2. Written to NOCTI Electronics Technology (4135), Electronic Testing Equipment
  • One cycle of a sine wave spans 4 divisions on an oscilloscope set to 0.5 ms per division. What is its frequency? Wikipedia, Frequency. Written to NOCTI Electronics Technology (4135), Electronic Testing Equipment; the arithmetic was worked twice
  • What does the display of an oscilloscope ordinarily show? US Navy NEETS Module 16, Introduction to Test Equipment, chapter 2. Written to NOCTI Electronics Technology (4135), Electronic Testing Equipment
  • Which instrument supplies sine, square and triangular test waveforms to a circuit? Wikipedia, Function generator. Written to NOCTI Electronics Technology (4135), Electronic Testing Equipment

Direct Current (DC) Circuit Analysis 6

  • A 1 kΩ resistor and a 3 kΩ resistor are in series across 12 V. What is the voltage drop across the 3 kΩ resistor? US Navy NEETS Module 1, Introduction to Matter, Energy, and Direct Current, chapter 3. Written to NOCTI Electronics Technology (4135), Direct Current (DC) Circuit Analysis; the arithmetic was worked twice
  • A 60 Ω resistor and a 30 Ω resistor are connected in parallel. What is the equivalent resistance? US Navy NEETS Module 1, Introduction to Matter, Energy, and Direct Current, chapter 3, parallel circuits. Written to NOCTI Electronics Technology (4135), Direct Current (DC) Circuit Analysis; the arithmetic was worked twice
  • A dc voltage is switched onto a series LR circuit. How far has the current risen after one time constant? US Navy NEETS Module 2, Introduction to Alternating Current and Transformers, chapter 2. Written to NOCTI Electronics Technology (4135), Direct Current (DC) Circuit Analysis
  • A lamp filament burns through and leaves a break in the conducting path of a series circuit. What is the circuit said to be? US Navy NEETS Module 1, Introduction to Matter, Energy, and Direct Current, chapter 3, open circuit. Written to NOCTI Electronics Technology (4135), Direct Current (DC) Circuit Analysis
  • Resistors of 100 Ω, 220 Ω and 330 Ω are connected in series. What is the total resistance? US Navy NEETS Module 1, Introduction to Matter, Energy, and Direct Current, chapter 3, series circuits. Written to NOCTI Electronics Technology (4135), Direct Current (DC) Circuit Analysis; the arithmetic was worked twice
  • What is the time constant of a 10 kΩ resistor in series with a 100 µF capacitor? Wikipedia, RC time constant. Written to NOCTI Electronics Technology (4135), Direct Current (DC) Circuit Analysis; the arithmetic was worked twice

Alternating Current (AC) Analysis 8

  • A filter must pass the higher-frequency components of a signal on to the load. Which type is needed? US Navy NEETS Module 9, Introduction to Wave-Generation and Wave-Shaping Circuits, chapter 1. Written to NOCTI Electronics Technology (4135), Alternating Current (AC) Analysis
  • A series circuit has 30 Ω of resistance and 40 Ω of inductive reactance. What is its impedance? US Navy NEETS Module 2, Introduction to Alternating Current and Transformers, chapter 4. Written to NOCTI Electronics Technology (4135), Alternating Current (AC) Analysis; the arithmetic was worked twice
  • A sine wave has a peak value of 10 V. What is its peak-to-peak value? US Navy NEETS Module 2, Introduction to Alternating Current and Transformers, chapter 1. Written to NOCTI Electronics Technology (4135), Alternating Current (AC) Analysis; the arithmetic was worked twice
  • A sine wave has a peak value of 170 V. About what is its effective (rms) value? US Navy NEETS Module 2, Introduction to Alternating Current and Transformers, chapter 1. Written to NOCTI Electronics Technology (4135), Alternating Current (AC) Analysis; the arithmetic was worked twice
  • In a capacitor on alternating current, what is the phase relationship of current and voltage? US Navy NEETS Module 2, Introduction to Alternating Current and Transformers, chapter 4 summary. Written to NOCTI Electronics Technology (4135), Alternating Current (AC) Analysis
  • The primary of a step-down transformer has ten times as many turns as its secondary. What does the secondary deliver when the primary is fed 120 V? US Navy NEETS Module 2, Introduction to Alternating Current and Transformers, chapter 5, turns and voltage ratios. Written to NOCTI Electronics Technology (4135), Alternating Current (AC) Analysis; the arithmetic was worked twice
  • What does a capacitor in an ac circuit oppose? US Navy NEETS Module 2, Introduction to Alternating Current and Transformers, chapter 4 summary. Written to NOCTI Electronics Technology (4135), Alternating Current (AC) Analysis
  • When is a circuit of inductance, capacitance and resistance resonant? US Navy NEETS Module 9, Introduction to Wave-Generation and Wave-Shaping Circuits, chapter 1. Written to NOCTI Electronics Technology (4135), Alternating Current (AC) Analysis

Prototyping and Fabrication Techniques 3

  • Before a part is tinned, a thin, even coating of flux is placed on it. What does the flux do while the part heats up? US Navy NEETS Module 4, Introduction to Electrical Conductors, Wiring Techniques, and Schematic Reading, chapter 2. Written to NOCTI Electronics Technology (4135), Prototyping and Fabrication Techniques
  • How does desoldering braid take solder off a joint? Wikipedia, Desoldering, Desoldering braid. Written to NOCTI Electronics Technology (4135), Prototyping and Fabrication Techniques
  • What does a heat shunt do during soldering? US Navy NEETS Module 4, Introduction to Electrical Conductors, Wiring Techniques, and Schematic Reading, chapter 2, soldering aids. Written to NOCTI Electronics Technology (4135), Prototyping and Fabrication Techniques

How this list was compiled: Our own questions, written to the competency list of the Job Ready Credential Blueprint for Electronics Technology (code 4135, version 01, original release 2018, content review 2026) that NOCTI publishes at https://www.nocti.org/wp-content/uploads/Blueprints/JRElectronicsTech4135.pdf , read 2026-10-13: a written assessment of 182 questions in 3 hours over eight areas (Safety Practices 9%; Fundamental Electrical Principles and Theory 16%; Digital Electronic Circuits 14%; Electronic Device Analysis and Applications 20%; Electronic Testing Equipment 9%; Direct Current Circuit Analysis 11%; Alternating Current Analysis 15%; Prototyping and Fabrication Techniques 6%), plus a performance assessment of four jobs. This bank holds 52 in those proportions. Every rule and definition was read on 2026-10-13 on the public page named under its question: the US Navy Electricity and Electronics Training Series (NEETS modules 1, 2, 3, 4, 7, 8, 9, 13 and 16, the copies at archive.org), OSHA standards in 29 CFR 1910 on osha.gov and Wikipedia. Every voltage, resistance and count 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 NEETS modules are works of the United States Navy approved for public release, and no question or example is copied from them.

How it works

Unofficial and free: a NOCTI Electronics Technology practice test of 52 questions of our own, laid out by the eight areas of Job Ready blueprint 4135. This page is not affiliated with NOCTI, which does not endorse or sponsor it.

Read the full guide

Eight areas, largest first

Electronic Device Analysis and Applications is 20% of the written assessment. Fundamental Electrical Principles and Theory is 16%, AC Analysis 15%, Digital Electronic Circuits 14%, DC Circuit Analysis 11%, Safety Practices and Electronic Testing Equipment 9% each and Prototyping and Fabrication Techniques 6%.

Time on the real test

The real test leaves just under a minute for each question, which makes 51 minutes a fair limit for these 52. No passing score is printed in the blueprint.

Left to the bench

Four performance jobs are scored apart from the written part: soldering and de-soldering, a power supply, an operational amplifier and a combinational logic circuit.

  • ICE: in a capacitor, current leads voltage by 90 degrees.
  • The effective (rms) value of a sine wave is 0.707 times its peak. Peak-to-peak is twice the peak.
  • Resistor bands read as two digits, then the number of zeroes, then the tolerance.

Questions and answers

How many questions are on the NOCTI Electronics Technology test?

The written part has 182 questions and a 3-hour limit, according to blueprint 4135, and may be given in up to three sessions. Four bench jobs follow, with 2 hours and 55 minutes for all of them.

Is NOCTI Electronics Technology the same test as NOCTI Electronics?

No. NOCTI also publishes a Job Ready blueprint named Electronics, code 3034, with 180 written questions, its own list of areas and five performance jobs. This page follows Electronics Technology, code 4135.

Is there a NOCTI Teacher test for Electronics Technology?

Yes, code 5947. Its eight areas match these, each weight sits within one point of the Job Ready figure, and it has 175 written questions, a 3-hour limit and the four bench jobs named above.

Where is the NOCTI Electronics Technology blueprint?

Search for Electronics Technology on nocti.org/credentials/blueprints and open the PDF with code 4135. It lists every competency, the area weights, ten sample questions and one sample job, the power supply. None of the samples is reused on this page.

More tests

Show 8 more

Browse Safety and Trades