Class-1 Electrician - PassRun

Everything you need for the Japanese Class-1 Electrician (第一種電気工事士) written exam, in one app.

551 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
- 50 questions (30 general + 20 wiring-diagram) with a 140-minute limit
- Instant pass/fail: 2 points per question, 60 out of 100 to pass
- 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

■ 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 area, sort by how often you missed it

■ Study by the 9 areas of the syllabus
- Basic electrical theory (Ohm's law, power and heat, AC, three-phase)
- Distribution theory and wiring design (voltage drop, allowable current, feeders, branch circuits)
- Machines, wiring devices, materials and tools
- Installation methods (wiring methods, connections, earthing)
- Inspection methods (completion inspection, insulation and earth resistance)
- Wiring diagrams (symbols, two-line diagrams, reading the plan)
- Safety laws and regulations
- Short, focused sets by sub-topic, with the answer and explanation right after each tap

■ Statistics that show your weak spots
- Accuracy per area, 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: [email protected]