# 電験三種 電力 過去問 2026 一問一答｜パスマル > Practice 300 past questions from the last 10 years of the Electrical Engineering Examination (Level 3, Power Engineering) in a question-and-answer format. Includes full explanations, calculation methods, and AI-generated questions to support your self-study for the exam, all free of charge. Canonical page: [https://chrome-stats.com/d/com.minatoapps.denken3d](https://chrome-stats.com/d/com.minatoapps.denken3d) ## Overview - **ID:** `com.minatoapps.denken3d` - **Platform:** Android - **Type:** Android app - **Status:** Available - **Publisher:** Minato Apps - **Category:** EDUCATION - **Downloads:** 307 - **Version:** 1.0.36 - **Last updated:** 2026-09-09 - **First published:** 2026-05-20 - **Publisher country:** JP - **Size:** 72 MB - **Data as of:** 2026-09-11 - **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.minatoapps.denken3d) - **Website:** [https://motokikando.github.io](https://motokikando.github.io/) - **Privacy policy:** [https://www.notion.so/2ff4756e78368079ad3ac6abe0abe84a?source=copy\_link](https://www.notion.so/2ff4756e78368079ad3ac6abe0abe84a?source=copy_link) ## Description This exam preparation app allows you to study past questions from the Third-Class Electrical Chief Engineer (Denken) exam's power section in a question-and-answer format. It includes over 300 questions from the past 10 years of actual exams, with clear explanations for every question. It covers all aspects of power generation (hydroelectric, thermal, nuclear, and new energy), substations, transmission, distribution, and electrical materials, supporting self-study for passing the Third-Class Electrical Chief Engineer (Denken) power section.


■ Recommended for those who:
・Are studying independently to pass the Electrical Engineering Examination (Level 3) Power Engineering subject.
・Want to practice past exam questions on their smartphone during spare time such as commuting to work or school.
・Are looking for a free study app or problem set for the Electrical Engineering Examination (Level 3).
・Want to efficiently prepare for the exam by year (first half/second half) and by theme.
・Want to thoroughly understand how to solve calculation problems with explanations and AI questions.
・Want to conquer the Electrical Engineering Examination (Level 3) by subject, along with Theory, Machinery, and Regulations.

■ Main Features
・Includes over 300 questions from the past 10 years (all questions with explanations).
・Efficient learning in spare time with a question-and-answer format.
・AI answers your questions on the spot.
・Automatically detects and prioritizes questions you struggle with.
・Displays the correct answer rate based on all users' answer data.
・Allows you to select the practice range by year (first half/second half).

■ Included Subjects and Exam Scope
The exam covers all 8 themes of the Electrical Engineering Examination (Level 3) Power Engineering subject: power generation, substation, transmission, distribution, and electrical materials. This app is subject-specific, allowing you to focus solely on the power generation subject. You can select practice areas by year (first half/second half), enabling you to repeatedly practice past exam questions from the last 10 years, organized by topic.

* Hydroelectric Power: Practice frequently appearing calculation problems such as hydroelectric power output calculations.
* Thermal Power: Includes frequently appearing topics such as the steam cycle and thermal efficiency.
* Nuclear Power: Prepare for questions on reactors and fuel cycles using past exam questions.
* Also covers questions on new energy generation and distributed power sources.
* Substations: Practice frequently appearing topics on substation equipment such as transformers, circuit breakers, and lightning arresters.
* Transmission: Learn calculation problems on voltage drop and transmission losses in transmission lines with explanations.
* Distribution: Includes frequently appearing topics on distribution methods and voltage regulation.
* Electrical Materials: Prepare for questions on the properties of electrical materials with explanations.
From hydroelectric, thermal, and nuclear power to transmission and distribution, you can focus on the topics that appear every year and efficiently aim for the passing score of the Electrical Engineering Examination (Level 3, Power Generation). The app automatically detects and prioritizes topics you struggle with, and the accuracy rate based on all users' answer data allows you to see at a glance which questions other test-takers tend to get wrong.

■ AI Question Function
You can ask the AI ​​about calculation procedures and equipment principles that you don't understand even after reading the explanations. You'll receive answers tailored to your level, such as "How to use percentage impedance" and "The principle of the Ferranti effect."

■ Features that make learning easy to continue
- Make learning a habit with "Today's Question" delivered daily
- Work together with peers in the league-based ranking system
- Track your learning progress with graphs

Download for free and start preparing for the Electrical Engineering 3rd Class Power Engineering exam today. You can aim for success even through self-study by accumulating practice with past questions in your spare time. You can study anytime, anywhere with just your smartphone.

■ Terms of Use (EULA)
https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ ## Rankings - #1,550,441 — Overall ## Permissions and access ### Permissions - `android.permission.ACCESS_ADSERVICES_AD_ID` - `android.permission.ACCESS_ADSERVICES_ATTRIBUTION` - `android.permission.ACCESS_ADSERVICES_TOPICS` - `android.permission.ACCESS_NETWORK_STATE` - `android.permission.CAMERA` - `android.permission.FOREGROUND_SERVICE` - `android.permission.INTERNET` - `android.permission.POST_NOTIFICATIONS` - `android.permission.READ_APP_BADGE` - `android.permission.READ_EXTERNAL_STORAGE` - `android.permission.RECEIVE_BOOT_COMPLETED` - `android.permission.SYSTEM_ALERT_WINDOW` - `android.permission.USE_BIOMETRIC` - `android.permission.USE_FINGERPRINT` - `android.permission.VIBRATE` - `android.permission.WAKE_LOCK` - `android.permission.WRITE_EXTERNAL_STORAGE` - `com.anddoes.launcher.permission.UPDATE_COUNT` - `com.android.vending.BILLING` - `com.google.android.c2dm.permission.RECEIVE` - `com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE` - `com.google.android.gms.permission.AD_ID` - `com.htc.launcher.permission.READ_SETTINGS` - `com.htc.launcher.permission.UPDATE_SHORTCUT` - `com.huawei.android.launcher.permission.CHANGE_BADGE` - `com.huawei.android.launcher.permission.READ_SETTINGS` - `com.huawei.android.launcher.permission.WRITE_SETTINGS` - `com.majeur.launcher.permission.UPDATE_BADGE` - `com.minatoapps.denken3d.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION` - `com.oppo.launcher.permission.READ_SETTINGS` - `com.oppo.launcher.permission.WRITE_SETTINGS` - `com.sec.android.provider.badge.permission.READ` - `com.sec.android.provider.badge.permission.WRITE` - `com.sonyericsson.home.permission.BROADCAST_BADGE` - `com.sonymobile.home.permission.PROVIDER_INSERT_BADGE` - `me.everything.badger.permission.BADGE_COUNT_READ` - `me.everything.badger.permission.BADGE_COUNT_WRITE` ## Similar extensions and apps - [電験三種 法規 過去問 2026 一問一答｜パスマル](https://chrome-stats.com/d/com.minatoapps.denken3h) — 294 users - [電験三種 理論 過去問 2026 一問一答](https://chrome-stats.com/d/com.minatoapps.denken3r) — 659 users - [電験三種 法規 電力 理論 機械 試験対策の過去問題集アプリ](https://chrome-stats.com/d/bloom.apps03) — 6,093 users - [電験二種 過去問アプリ](https://chrome-stats.com/d/guchi.lab.denken2) — 495 users - [電験三種 電力ラボ](https://chrome-stats.com/d/com.denken3.denryokulab) — 104 users - [技術士 電気電子部門 過去問集 | 専門科目の対策アプリ](https://chrome-stats.com/d/jp.ktg.engineerelectric) — 16 users - [電験三種 2022年度版 試験対策の過去問題集アプリ](https://chrome-stats.com/d/apps.dream.fantastic.dai3denki) — 1,439 users - [第三種電気主任技術者 一問一答](https://chrome-stats.com/d/com.asobichiru.denken3) — 21 users - [2級電気工事施工管理技士学科過去問題/令和7年前期1次～](https://chrome-stats.com/d/com.r3den2sekokan) — 162 users - [第二種電気工事士 チャレンジ](https://chrome-stats.com/d/com.ikorihs.elecitems) — 1,179 users - [第三種電気主任技術者試験](https://chrome-stats.com/d/com.jyouhousyoridenkisyunin3.englishstudy) — 368 users - [第二次検定/実地/2級電気工事施工管理過去問題/令和7年～](https://chrome-stats.com/d/com.r2den2sekokanjicchi5) — 80 users --- Source: [Chrome-Stats](https://chrome-stats.com/d/com.minatoapps.denken3d)