PLC Simulator
Quizzes

Test yourself before the interview does.

14 timed quizzes across fundamentals, timers, state machines, safety, and PID. Multiple-choice, true/false, and ladder-trace questions — all objectively graded.

14
Quizzes
177
Total questions
71%
Avg. pass threshold
2
Free quizzes
How quizzes work

Objective grading. No participation trophies.

Every quiz is timed, graded against a published pass threshold, and stored in your progress record. You either know the material or you don’t — and you’ll know which.

Built like a real interview

Questions in the style a hiring manager asks, with an explanation after every answer. Take your time on each set, then run an interview round when you want the clock.

Three question types

Multiple-choice for concepts, true/false for traps, ladder-trace for execution logic. Explanations on every answer.

Pre/post retakes

Take a quiz before you start a topic, then again after. The delta is what you actually learned.

Feeds the interview tracks

Pass the topic quizzes first; the interview tracks reuse them as their Q&A rounds.

The catalog

14 quizzes covering the syllabus.

Titles, time limits, and pass thresholds are public. Questions and answer keys stay behind sign-in.

free
5 questions

PLC Fundamentals Quiz

Check your understanding of the simplified cyclic scan, process-image I/O, contacts, and basic Boolean ladder logic.

10 minPass 70%
free
3 questions

Timers and Counters Quiz

Test how IEC on-delay and off-delay timers change Q over time, and when a count-up counter reaches its preset.

10 minPass 70%
basic
15 questions

Contacts and Coils Quiz

NO/NC contacts, coil types, series vs parallel, and fall-through semantics.

10 minPass 70%
basic
15 questions

Number Systems Quiz

Binary, decimal, hexadecimal, BCD, signed vs unsigned, and PLC bit addressing.

10 minPass 70%
basic
15 questions

PLC Safety Concepts Quiz

E-stop wiring, stop-priority rungs, dual-channel safety, and fail-safe logic principles.

10 minPass 70%
basic
13 questions

State Machines Quiz

State-as-coil patterns, one-shots, state transitions, and sequencer logic in ladder programs.

10 minPass 70%
basic
13 questions

SFC Fundamentals Quiz

Sequential Function Chart steps, transitions, action qualifiers, and parallel branches per IEC 61131-3.

10 minPass 70%
basic
13 questions

Structured Text Quiz

IF/THEN/ELSE, CASE statements, variable declarations, assignments, and ST syntax per IEC 61131-3.

10 minPass 70%
pro
13 questions

PID Control Quiz

Proportional, integral, and derivative terms; tuning methods; integral windup; and deadtime compensation.

10 minPass 70%
basic
13 questions

Analog I/O Quiz

4-20mA and 0-10V signals, analog-to-digital conversion, scaling to engineering units, and wiring practices.

10 minPass 70%
basic
13 questions

Debugging and Scan Cycle Quiz

PLC scan-cycle traps, mid-scan input readback, watchdog timers, and systematic fault-finding techniques.

10 minPass 70%
pro
13 questions

Industrial Communications Quiz

Modbus RTU/TCP, EtherNet/IP, Profinet, register types, and industrial network fundamentals.

10 minPass 70%
pro
23 questions

Industrial Networks and SCADA Knowledge Check

A graded check across the plant-floor stack, fieldbus and Ethernet, Modbus, EtherNet/IP, PROFINET, OPC UA, MQTT, OT security, SCADA, historians and alarm management.

15 minPass 70%
pro
10 questions

Industrial Safety Knowledge Check

Ten graded questions on the Industrial Safety track: risk assessment, E-stop circuits, safety relays and light curtains, lockout/tagout, electrical hazards, performance levels, guarding, safe PLC programming and commissioning.

—Pass 80%
What a question looks like

Not multiple-choice for the sake of it.

The trace questions hand you a rung and ask what the output is. The MCQs expose the distractor your brain would actually pick. Every question comes with an explanation you’ll remember.

  • MCQ. One correct answer and three realistic wrong ones. Common misconceptions, not obvious traps.
  • True / False. Built around the statements people get backwards. Scan cycle order, edge vs level, etc.
  • Ladder trace. We show you a rung and a set of input states. You tell us what the output is.

See where the gaps are.

Sign up free and take the first quiz — you’ll learn more from the explanations than from most PLC tutorials.

Competency and practice field guide

PLC programming quizzes: practice plan

Direct answer

The learner can use quiz evidence to choose a concrete remediation task and then prove the concept in an executable scenario.

Written for learners and instructors using timed questions to locate misconceptions before or after runnable PLC practice.

Adult learners and an instructor using PLC racks and laptops while studying diagnostic and concept assessment for PLC learners in an industrial automation lab
System map / 02

NODE 01observable

Scope

Target competency, learner baseline, question domain, timing, attempt rules, feedback, accessibility and remediation path.

NODE 02observable

Signal path

Question prompt through selected answer, rationale, misconception classification and linked runnable practice.

NODE 03observable

Baseline practice

One honest timed attempt reviewed until every correct and incorrect answer can be explained.

NODE 04observable

Edge cases

Memorized answer, ambiguous wording, leaked solution, inaccessible interaction, random guessing and no changed-case transfer.

NODE 05observable

Fault practice

A vocabulary, concept, calculation, interpretation, diagnostic, timing or test-strategy weakness.

NODE 06observable

Transfer to the job

The weak domain retaught, practiced in a scenario and reassessed with a changed case.