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Exam-style engineering practice built on the official subject standards — an explanation for every option, spaced review, and timed mocks. In Arabic and English. Start free with 50 questions.
Mechanical
Mechanics & vibrations
An object is thrown straight up. At its highest point, its acceleration is
Gravity does not pause at the top. The velocity is momentarily zero, but the acceleration stays g downward for the whole flight — and that is what reverses the motion.
Mapped to the official ETEC subject standards, across thirteen fields:
01THE PROBLEM
Eight subjects, thousands of pages, and a test that jumps between them. Rereading feels productive but rarely survives exam day. What lasts is answering questions, learning why you were wrong, and meeting the same idea again before you forget it.
02HOW IT WORKS
Pick a discipline and a daily goal. Progress is tracked separately for each field, so nothing is lost when you switch.
Every question explains why each option is right or wrong — not just which letter to pick, so a wrong guess becomes a fixed misunderstanding.
Missed and mastered questions return on a spaced schedule — a day, then a few days, then a week — so the correction sticks.
03WHAT’S INSIDE
Not just the answer key. Each distractor is explained, so you learn the concept behind the question — not the letter that happened to be right.
Questions you miss return on the right day. Not immediately, not never.
Rehearse the pace with full-length timed mocks, then review every answer.
See which official concepts you’ve mastered and which still need work.
Turn an explanation into a card and review it on the same schedule.
Switch between Arabic and English any time. Questions stay in English, like the exam.
Begin with 50 free questions and a timed mock, then a Season Pass from SAR 79 paid once for 12 months — no automatic renewal.
Built on the ETEC subject standards for your field, filed under the concepts your course actually teaches.
04BUILT HONESTLY
Jahziah Practice is not affiliated with ETEC. The questions are draft material, solved and checked before they are shown; anything that cannot be verified is held back rather than published.
Mechanical engineering is our most complete field today. The other four are being brought to the same standard, topic by topic.
05COMMON QUESTIONS
Jahziah (جاهزية) is the readiness assessment run by ETEC, the Saudi Education and Training Evaluation Commission. For engineering graduates, it measures the programme learning outcomes of students who are about to graduate. Engineering versions are sat in English, with multiple-choice questions across the core subjects of the discipline.
No. Jahziah Practice is independent and is not affiliated with, endorsed by, or connected to ETEC. It is a study tool built to help students prepare. Always check the official ETEC subject standards for the authoritative exam details.
Every new account starts with a free trial of 50 practice questions and one timed mock, with no card and no time limit. After that you choose a plan: a Season Pass for SAR 79 paid once for 12 months of access (no automatic renewal), or SAR 19 a month you can cancel anytime. Payment is handled securely by Stripe (Visa, Mastercard and Apple Pay). Keeping an account is what saves your progress and syncs it across devices.
Eight: mechanical, electrical, civil, chemical, architecture, industrial, software, and computer engineering. Each field is organised by the official subject areas of its ETEC curriculum rather than a single broad label, so you always know which concept you are practising.
06GO DEEPER
What the Jahziah mechanical engineering exit exam covers, how it is structured, and how to revise each of its eight official subject areas.
Field guideWhat the Jahziah electrical engineering exit exam covers, how it is structured, and how to revise circuits, electronics, fields, signals and digital systems.
Field guideWhat the Jahziah civil engineering exit exam covers, how it is structured, and how to revise structures, geotechnics, transport, water and construction.
Field guideWhat the Jahziah industrial engineering exit exam covers, how it is structured, and how to revise operations research, quality, ergonomics, logistics and engineering economy.
Field guideWhat the Jahziah software engineering exit exam covers, how it is structured, and how to revise computing foundations, requirements, design, testing and security.
Field guideWhat the Jahziah chemical engineering exit exam covers, how it is structured, and how to revise balances, thermodynamics, separations, reaction engineering, process control, design and safety.
Field guideWhat the Jahziah architecture exit exam covers, how it is structured, and how to revise the design process, history and theory, construction and building systems, urban planning, and professional practice.
Field guideWhat the Jahziah computer engineering exit exam covers, how it is structured, and how to revise circuits, computer architecture, digital design, embedded systems, networks, signal processing and programming.
Field guideSTUDY ARTICLES
It takes a minute to begin — 50 questions free, no card, no time limit. A little practice every day, and your weak spots become strengths.
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