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  • 電験三種 法規ラボ screenshot 1
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  • 電験三種 法規ラボ screenshot 3
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  • 電験三種 法規ラボ screenshot 5

About 電験三種 法規ラボ

"Denken 3-shu Hoki Lab" is an exam preparation app designed for efficient learning of the "Hoki" (Regulations) subject of the 3rd Class Electrical Chief Engineer Examination.

It combines past exam questions, a practice test in the actual exam format, flashcards, formula cards, a textbook, and short study sessions. You can repeatedly study Hoki while reviewing incorrect answers and areas of weakness.

[Main Features]

■ Past Exam Questions:
You can work through questions by year. You can check explanations for each question and repeatedly study while understanding the content.

■ Detailed Step-by-Step Explanations: Even for calculation problems and problems including diagrams, you can check the thought process and solution method step by step.

■ Practice Test Mode:
Select the year you will take the exam and challenge yourself with questions in a format similar to the actual exam, while being mindful of the time limit. After the exam, you can check the pass/fail result and the correctness of each question in a list, and quickly move to the questions you got wrong for review.

■ Flashcards, Formula Cards, and Textbook: You can repeatedly review important points of Hoki and formulas necessary for calculations in flashcard and textbook formats.


■ Gap Training
This app uses question-and-answer format based on past exam questions, allowing you to study even during short periods of time, such as while commuting or taking a break. You can also check the source of each past exam question from the individual cards.

■ Learning History & Weak Areas
Records your correct/incorrect answers and learning progress, allowing you to identify problems to review and areas you struggle with.

【Recommended for those who:】

・Want to efficiently review past questions for the Third-Class Electrical Engineer Examination "Regulations"

・Want to understand not only the answers but also the thought processes and calculation procedures

・Want to practice time management in a format similar to the actual exam

・Want to utilize spare time with flashcards and question-and-answer format

・Want to focus on reviewing incorrect answers and areas they struggle with

Some questions and features are available for free. Premium features are available through a one-time in-app purchase. No advertisements are displayed within the app.

This app is an unofficial app intended to support learning for the Third-Class Electrical Engineer Examination. It is not an official app provided or approved by the examination body or other public institutions.

What’s new

Version 1.1.6 · Updated October 29, 2026

機械ラボの製品版公開に対応しました。 ホーム画面の「ほかの科目も学ぶ」から、機械ラボのGoogle Playページへ移動できます。

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