Denken 3rd Class vs Refrigeration License 1/2/3

Everything you need for the Japanese Class-3 Chief Electrical Engineer exam (電験三種), in one app. 522 original practice questions written along the official syllabus, every one with an explanation. No sign-up, no internet connection required — start studying the moment you install it. ■ Mock exams in the real format - 76 items across all four subjects (Theory 20, Power 20, Machines 20, Law 16) - Pass/fail judged per subject: 60 out of 100 in each, just like the real exam - Jump to any question from the answer-sheet view, just like the real CBT - Pause and resume where you left off - 5 full rounds with no repeats ■ Per-subject results, the way the exam actually works - Denken 3rd Class is passed subject by subject, and a passed subject is exempt for two years - The result screen shows whether each subject cleared 60 points, so you know what is left - A high total does not hide a subject below 60 — the app says that subject failed ■ A mistake notebook that thins itself out - Wrong answers are collected automatically - Three correct answers in a row graduates a question off the list - Add your own note to any question - Filter by subject, sort by how often you missed it ■ Study by the 4 subjects and 32 sub-topics - Theory (electrostatics, DC circuits, magnetism, AC circuits, transients, electronics, measurement) - Power (hydro, thermal and nuclear generation, renewables, substations, transmission, distribution, materials) - Machines (DC, induction and synchronous machines, transformers, power electronics, drives, lighting, heating, control, information) - Law (Electricity Business Act, technical standards, their interpretation, facility management) - Short, focused sets by sub-topic, with the answer and explanation right after each tap ■ Statistics that show your weak spots - Accuracy per subject, so weak areas surface on their own - Score trend across your mock exams - Last two weeks of study time and your daily streak - "Weak-point drill" that gathers only your lowest-accuracy questions ■ And more - Random mock: choose the range and the number of questions - Bookmarks for the ones you want to come back to - Search across question text, options and explanations - Dark mode and adjustable text size - Shuffle questions and options so you don't memorise positions - Your study records stay on the device and are never sent anywhere. - The questions are original practice questions written along the syllabus, not the actual exam papers. For official information such as schedules and applications, see the exam centre site (shiken.or.jp). - Contact: seohcz1@gmail.com

Japanese-language original practice for Japan Refrigeration Machinery Supervisor Classes 1, 2 and 3. Shared foundational questions and course-specific calculations are included. This is not a reproduction of past papers or a claim of complete exam coverage. Class 1 academic practice uses drafts, model answers and self-checks. It is not automatically graded and does not predict an overall exam pass. Drafts stay on the device. Each course keeps its own progress and exam date. One non-consumable Pro purchase unlocks every included course in this app; existing owners retain access and can restore the same purchase. Free access includes 10 lifetime drill/written attempts per course, one half mock per course and a three-day passive-study trial. Full mocks, unlimited weak review and unseen-only practice require Pro. No subscription. Unofficial app by Particles and Waves. Not affiliated with the government or exam administrators. Scores are learning guidance, not a guarantee of passing. All study content is in Japanese. 第一種・第二種・第三種冷凍機械責任者を、ひとつのアプリで学習。 共通の法令・冷凍工学の基礎を復習し、第二種の学識計算、第一種の計算・記述演習へ進めます。学習記録と試験日は種別ごとに保存します。 収録内容 ・第三種：法令・保安管理技術の独自問題112問。 ・第二種：共通基礎112問と学識の計算40問（計152問）。 ・第一種：法令・保安の共通基礎112問と、学識の計算・記述28問。 共通基礎には種別をまたぐ同じ内容が含まれます。過去問集や試験全範囲の網羅をうたうものではありません。 模試と演習 第三種は法令20問・保安15問の35問、第二種は法令20問・保安10問・学識10問の40問。各科目60%以上を練習の目標にします。第一種の択一模試は法令・保安の35問が対象で、学識は別画面の5問演習（120分の目安）です。記述は草稿・解答例・確認項目による自己評価で、自動採点や3科目全体の合否判定は行いません。草稿は端末内に保存します。 法令の出典はe-Govの原文を表示。法令引用を2026年4月1日の条文と照合しています。計算問題は架空の条件による独自演習です。公式試験問題の転載ではありません。