DEMO
Final Exam (Demo)
Get your ticket for the final exam here—or try out the process first in the demo: 16 questions from all eight modules in 24 minutes. The demo remains in this browser and does not issue a valid certificate.
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Sample exercises from the demo. Certificates from this demo are not valid certificates.
The exam demo needs JavaScript. Without JavaScript, you can still read the exam conditions, two example tasks, and the explanation of the formula symbols on this page.
Rules of this demo
- 16 tasks from all eight modules, two per module. At least four of these are calculation tasks with newly drawn numbers.
- 24 minutes of working time, with a time extension 36 minutes.
- Passed from 70% (12 of 16 tasks).
- You can move freely back and forth between tasks and submit early at any time.
- Aids are allowed: calculator, guides, reference tables, your own notes.
- After submitting, you see your result per module. The exam does not show individual solutions.
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Submit the exam now?
Time is up. The answers you had given by then were scored.
In the demo, you can try again as often as you like. Each attempt draws new tasks and new numbers.
Your result per module
With two tasks per module, this profile is only a rough indication. The planned exam has five tasks per module.
Certificate preview (demo)
Demo – not a valid certificate. This is how the final certificate is planned.
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For employers and trainers: what the certificate says
Planned: “Add to LinkedIn”
In live operation you can add the certificate to your LinkedIn profile with one click. In the demo the button is switched off – a demo certificate is not a valid certificate.
Look up formula symbols
| Symbol | Meaning | Typical unit |
|---|---|---|
| M | Torque | Nm |
| n | Speed; for linear guides, double strokes per minute | min⁻¹ |
| P | Power (kW); for guides and bearings, the equivalent load (kN) | kW or kN |
| i | Gear ratio | dimensionless |
| η | Efficiency as a decimal number (0.90 corresponds to 90%) | dimensionless |
| J | Mass moment of inertia | kg·cm² |
| F | Force; Ft is the tangential force | N |
| m | Module of a gear | mm |
| z | Number of teeth | dimensionless |
| a | Center distance | mm |
| d | Pitch circle diameter | mm |
| C, C0 | dynamic and static load rating | kN |
| P0 | greatest static load | kN |
| S0 | static safety factor | dimensionless |
| Lh | nominal service life in operating hours | h |
| s | Stroke | m |
| Ph | Lead of the spindle | mm |
| SB | Service factor | dimensionless |
| E | Energy | kWh |
| h | Operating hours | h |
Subscript digits count stages or gears. For gearboxes, 1 stands for the drive side and 2 for the output side.
Here’s what the certificate looks like
What will be covered on the exam?
The exam tests technical understanding—not practical work on an actual system. It covers all eight modules equally:
- Module 1 – Load Profile, Torque, and Inertia
- Module 2 – Selecting Motor and Drive
- Module 3 – Selecting Gearboxes
- Module 4 – Understanding Gearing, Selecting Gears
- Module 5 – Selecting Linear Guides, Calculating Service Life
- Module 6 – Linear Drives: Ball Screws, Lead Screws, and Actuators
- Module 7 – Connecting and Fitting: Couplings, Magnetic Couplings, Fits, and Standard Parts
- Module 8 – Lubrication, Maintenance, and Total Cost
There are three types of exercises:
- Comprehension questions with four possible answers
- Practical application problems from the selection process
- Calculation exercises—each experiment yields new numbers
| Characteristic | Demo on this page | Final exam |
|---|---|---|
| Exercises | 16, two per module | 40, five per module |
| Time | 24 minutes, or 36 minutes if desired | 60 minutes, or 90 minutes upon request |
| Pass | ab 70 % | ab 70 % |
| Resources | erlaubt | Permitted (calculator, guide, table book) |
| Supervision | keine | None – Unsupervised online exam |
| Experiments | any number | Three attempts are included, with a 48-hour waiting period between attempts. |
| Feedback | Results per module; no individual solutions | Results per module; no individual solutions |
| Costs | keine | Free during the beta phase as part of the free quota; a fee will apply later. |
| Certificate | Preview, not valid | Certificate of Completion with Verification ID |
Planned: Once a sufficient number of exams have been taken, the pass rate will be posted here.
Here's what an assignment looks like
These two problems are taken from the demo's problem pool.
Module 1 – Load Profile, Torque, and Inertia
Was unterscheidet die Betriebsart S1 von S3 nach IEC 60034-1?
- S1 = Dauerbetrieb ohne Pause, S3 = Aussetzbetrieb mit Last- und Pausenzeiten
- S1 = Aussetzbetrieb mit kurzen Lastspielen, S3 = Dauerbetrieb ohne jede Pause
- S1 gilt nur für Servomotoren, S3 gilt nur für Asynchronmotoren im Dauerbetrieb
- Beide Betriebsarten sind nach IEC 60034-1 technisch gleichbedeutend und austauschbar
Show solution
The correct form is: S1 = Dauerbetrieb ohne Pause, S3 = Aussetzbetrieb mit Last- und Pausenzeiten
S1 läuft ohne Pausen bis zum thermischen Beharrungszustand; S3 wechselt in Lastspielen zwischen Belastung und Pause, angegeben als Einschaltdauer ED in %. Servo- wie Asynchronmotoren können je nach Anwendung in beiden Betriebsarten laufen – die Betriebsart ist keine Motorbauart-Frage.
Module 6 – Linear Drives: Ball Screws, Lead Screws, and Actuators
Berechnen Sie das erforderliche Antriebsmoment M eines Kugelgewindetriebs aus Axialkraft F, Steigung Ph und Wirkungsgrad η.
The numbers are randomly generated for each experiment.
Show solution
Formula: M = F · Ph / (2000 · π · η)
Example: F=1200 N, Ph=10 mm, η=0,90 → M=2,12 Nm
Ph steht in mm, deshalb der Faktor 2000 im Nenner. η steht im Nenner, weil Verluste das nötige Antriebsmoment erhöhen.
Your Information
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