100+ Free Bac SI (Sciences de l'Ingenieur) Practice Questions
Pass your Baccalaureat General - Specialite Sciences de l'Ingenieur (epreuve terminale) exam on the first try — instant access, no signup required.
The electrical power dissipated by a resistor R carrying a current I is:
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Key Facts: Bac SI (Sciences de l'Ingenieur) Exam
Coefficient-16 French baccalaureat speciality: a 3 h 30 written exam combining Sciences de l'ingenieur (~75%, /20) with an associated physics part (~25%, /20) plus a 1-hour practical, covering systems engineering, mechanics, automatic control and information processing.
Sample Bac SI (Sciences de l'Ingenieur) Practice Questions
Try these sample questions to test your Bac SI (Sciences de l'Ingenieur) exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.
1In the French Sciences de l'Ingenieur (SI) approach, a technical system is described by two interacting chains. Which pair correctly names them?
2The classic functions of the chaine d'energie, in order, are usually given as:
3The functions of the chaine d'information are best summarised as:
4Instantaneous power in a power link is the product of an effort variable and a flow variable. For mechanical rotation, this is:
5In an electrical power link, the effort and flow variables that multiply to give power are respectively:
6The systems-modelling language recommended by the SI programme for describing complex systems is:
7Which SysML diagram is used to express the system requirements (the exigences) a product must satisfy?
8An engineer wants to model the internal structure of a system showing its parts, ports and the flows between them. The most appropriate SysML diagram is the:
9In functional analysis, the matiere d'oeuvre (working matter) acted on by a system can be of three types. Which list is correct?
10Within the energy chain, the component that physically converts the supplied energy into the useful energy (for example an electric motor turning electrical into mechanical energy) realises the function:
About the Bac SI (Sciences de l'Ingenieur) Exam
The Sciences de l'Ingenieur (SI) speciality of the French baccalaureat general is one of two coefficient-16 speciality subjects taken in the Terminale year. The terminal written exam lasts 3 h 30 and is built around the engineering study of a real, pluri-technologique product: it combines a Sciences de l'Ingenieur part (about 3 h, worth roughly 75%) with an associated sciences physiques part (about 1 h, worth roughly 25%), each marked out of 20 on a separate copy, and is completed by a 1-hour practical. The official Eduscol programme covers systems engineering and SysML modelling, the chaine d'energie and chaine d'information, mechanics (statics, kinematics, dynamics, energetics), automatic control and asservissements, electricity and electronics, transmission of power, information processing and a simplified view of artificial intelligence, all framed by performance and sustainable development. A 48-hour collaborative project in Terminale supports the separate Grand oral. The subject prepares students for engineering schools and scientific higher education in France.
Questions
100 scored questions
Time Limit
Written: 3 h 30 (SI ~3 h + associated physics ~1 h); practical: 1 h
Passing Score
Marked out of 20; baccalaureat awarded at average 10/20. SI speciality coefficient 16, with the written SI part ~75% and the associated sciences physiques part ~25%.
Exam Fee
No separate fee for candidats scolaires (free public exam); candidats libres may pay minor administrative costs. (Ministere de l'Education nationale (France))
Bac SI (Sciences de l'Ingenieur) Exam Content Outline
Analyse, modelisation et ingenierie systeme
Systems engineering, functional analysis, SysML diagrams, chaine d'energie and chaine d'information, effort-flow power links and the engineering approach.
Mecanique (statique, cinematique, dynamique, energetique)
Static equilibrium and moments, torseurs and liaisons, kinematic diagrams, circular motion, Newton's second law, kinetic and potential energy and work.
Automatique et asservissements
Open- and closed-loop control, comparator and error, transfer functions, block diagrams, proportional/PID correctors, first-order response, stability, accuracy and speed.
Electricite, electronique et transmission de puissance
Ohm's law and Joule effect, resistor networks, DC motors and PWM, gears and reduction ratios, epicyclic trains, belt drives and screw-nut systems.
Traitement de l'information et programmation
Sensors, analog-to-digital conversion, GRAFCET, simplified artificial intelligence, data rates, modulation and network frames and encapsulation.
Resistance des materiaux, developpement durable et physique associee
Stress and strain, Hooke's law, structural loadings and safety factor, life-cycle analysis and sustainability, and the associated physics.
How to Pass the Bac SI (Sciences de l'Ingenieur) Exam
What You Need to Know
- Passing score: Marked out of 20; baccalaureat awarded at average 10/20. SI speciality coefficient 16, with the written SI part ~75% and the associated sciences physiques part ~25%.
- Exam length: 100 questions
- Time limit: Written: 3 h 30 (SI ~3 h + associated physics ~1 h); practical: 1 h
- Exam fee: No separate fee for candidats scolaires (free public exam); candidats libres may pay minor administrative costs.
Keys to Passing
- Complete 500+ practice questions
- Score 80%+ consistently before scheduling
- Focus on highest-weighted sections
- Use our AI tutor for tough concepts
Bac SI (Sciences de l'Ingenieur) Study Tips from Top Performers
Frequently Asked Questions
How long is the Bac Sciences de l'Ingenieur written exam and how is it structured?
The written paper lasts 3 h 30. It is built around the engineering study of a real product, with a Sciences de l'ingenieur part of about 3 hours and an associated sciences physiques part of about 1 hour, each marked out of 20 on a separate copy. A 1-hour practical is taken separately.
What is the coefficient of the Sciences de l'Ingenieur speciality?
It carries a coefficient of 16 in the baccalaureat general, like every Terminale speciality. The two retained specialities together count for 32 of the 100 total points of the diploma.
How are the SI and physics parts weighted?
On the written paper the Sciences de l'ingenieur part counts for about 75% of the mark and the associated sciences physiques part for about 25%. Each part is marked out of 20.
What topics are on the Terminale SI programme?
Systems engineering and SysML, the chaine d'energie and chaine d'information, mechanics (statics, kinematics, dynamics, energetics), automatic control and asservissements, electricity and electronics, transmission of power, information processing, a simplified view of artificial intelligence, and sustainable development, plus the associated physics.
What is the 48-hour project used for?
In Terminale, SI students carry out a collaborative project of about 48 hours to design all or part of a product. This project serves as the support for the separate Grand oral (epreuve orale terminale), not for the written exam.
When does the 2026 Bac SI exam take place?
The written speciality exams are held on 16-17 June 2026, on dates set nationally by the Ministere de l'Education nationale, with the practical organised by the academies.