電験三種 過去問｜理論 電力 機械 法規 全1200問

This app contains all the publicly released past questions for the Third-Class Electrical Chief Engineer Examination (Denken 3-shu), covering all four subjects: Theory, Power, Machinery, and Regulations. There's no need to purchase separate apps for each subject.

■ 15 Examinations, 1,200 Questions
Includes all 15 written exams for Denken 3-shu, from 2015 to the second half of 2025.

■ Original Diagrams and Formulas
Circuit diagrams, waveforms, and formulas are included as images directly from the official PDFs. Since the text hasn't been retyped, there are no errors such as Ω becoming W, or missing exponents or subscripts. Diagrams can be zoomed in with pinch gestures for detailed viewing.

■ 4-Subject Mock Exam
The mock exam is conducted with the same time allocation as the actual exam: Theory (90 minutes), Power (90 minutes), Machinery (90 minutes), and Regulations (65 minutes). Scoring is done subject by subject, and the pass/fail status for each subject is displayed.

■ Subject Pass Management
Registering passed subjects displays the remaining number of exemptions. This feature is designed for those taking the Electrical Chief Engineer Examination over multiple years, using a subject-by-subject passing system.

■ Weakness Review
Incorrectly answered questions are categorized by cause tags such as "calculation error," "overlooking units/digits," "correct formula selection," and "lack of knowledge," allowing for comprehensive review.

■ Sources Clearly Stated for All Questions
All questions display the source in the format "Source: 2025 Second Half Third-Class Electrical Chief Engineer Examination, Theory, Question 1." The questions have not been altered.

■ Offline Use
Question data is embedded in the app. You can practice past questions even in places without internet access, such as on trains or underground. Learning records are saved only on your device; no account registration is required.

■ One-Time Purchase, No Ads
No ads are displayed. A single purchase of the Passing Pack grants unlimited access to all 15 sets of past questions (1,200 questions total) and 4 subject mock exams for the Third-Class Electrical Chief Engineer Examination. There are no monthly fees.

-- This app uses examination questions published by the Japan Electrical Engineers Examination Center, in accordance with the Center's terms of use. This app was created by an individual or organization unrelated to the Japan Electrical Engineers Examination Center.