Subject 1: Electromagnetism

01.
Vector 10
02.
Electrostatic fields in a vacuum 16
03.
Conductivity and Capacitance in Vacuum 32
04.
Genome 39
05.
Electrical Imaging Method 47
06.
Current 50
07.
Magnetometer 54
08.
Magnets and Magnetic Circuits 66
09.
Electromagnetic Induction 76
10.
Inductance 79
11.
Electromagnetic Field 84
Recent past exam questions
- 2012 Exam Question 92
- 2013 Exam Questions 104
- 2014 Exam Question 115
- 2015 Exam Questions 126
- 2016 Exam Question 139
- 2017 Exam Questions 152
- 2018 Exam Questions 165
- 2019 Exam Questions 177
- 2020 Exam Questions 190
- 2021 Exam Questions 204
- 2022 Exam Questions 219
- 2023 CBT Restoration Problem 234
- 2024 CBT Restoration Problem 247
- 2025 CBT Restoration Problem 260

2 subjects: Power Engineering

01.
Transmission and distribution system configuration 274
02.
Overhead transmission line 276
03.
Track water purification and Corona 279
04.
Transmission characteristics 286
05.
Neutral Grounding Method and Inductive Interference 293
06.
Fault Calculation 298
07.
Power System Stability 302
08.
Overvoltage and Protective Measures 303
09.
Protective relaying method 307
10.
Circuit breaker 310
11.
Ship number 312
12.
Hydraulic 320
13.
Firepower 326
14.
Nuclear power 330
Recent past exam questions
- 2012 Exam Question 334
- 2013 Exam Question 345
- 2014 Exam Question 355
- 2015 Exam Question 366
- 2016 Exam Question 377
- 2017 Exam Questions 388
- 2018 Exam Questions 398
- 2019 Exam Question 409
- 2020 Exam Questions 421
- 2021 Exam Questions 433
- 2022 Exam Questions 446
- 2023 CBT Restoration Problem 458
- 2024 CBT Restoration Problem 471
- 2025 CBT Restoration Problem 482

3 subjects Electrical equipment

01.
DC generator 496
02.
DC motor 508
03.
Losses, Efficiency, and Ratings of DC Motors 517
04.
Special DC Motor 518
05.
Synchronous generator 519
06.
Synchronous motor 533
07.
Transformer 536
08.
Induction 556
09.
Power Semiconductors and Rectifiers 575
Recent past exam questions
- 2012 Exam Question 586
- 2013 Exam Question 596
- 2014 Exam Question 606
- 2015 Exam Question 617
- 2016 Exam Question 629
- 2017 Exam Questions 640
- 2018 Exam Questions 651
- 2019 Exam Question 662
- 2020 Exam Questions 675
- 2021 Exam Questions 688
- 2022 Exam Questions 701
- 2023 CBT Restoration Problem 714
- 2024 CBT Restoration Problem 725
- 2025 CBT Restoration Problem 737

4 subjects: Circuit Theory and Control Engineering

01.
Fundamentals of Electrical Theory 750
02.
General Analysis of Electrical Circuits 763
03.
AC Circuit 771
04.
AC Power and Energy 778
05.
Inductive coupling circuit 785
06.
3-phase AC 788
07.
Non-sinusoidal AC 797
08.
2-terminal circuit 801
09.
4-terminal circuit 805
10.
Resonant circuit 808
11.
Distributed Integer Circuit 814
12.
Transients in DC Circuits 817
13.
Laplace Transform 818
14.
Transfer function 824
15.
Control System Concept 831
16.
Block diagram and signal flow diagram 834
17.
Transient response of automatic control systems 840
18.
Deviation and Sensitivity 845
19.
Analysis by Frequency Response 853
20.
Control system stability 858
21.
Root Locus Method 865
22.
Equations of State and Z Transforms 870
23.
Sequence Control 873
24.
Control device 876
Recent past exam questions
- 2012 exam question 880
- 2013 Exam Question 891
- 2014 Exam Question 902
- 2015 Exam Question 913
- 2016 Exam Question 925
- 2017 Exam Question 936
- 2018 Exam Question 948
- 2019 Exam Question 962
- 2020 Exam Questions 975
- 2021 Exam Questions 988
- 2022 Exam Questions 1002
- 2023 CBT Restoration Problem 1018
- 2024 CBT Restoration Problem 1032
- 2025 CBT Restoration Problem 1044

5 subjects Electrical Installation Technology Standards

01.
Common 1060
02.
Low-voltage electrical equipment 1079
03.
High-voltage and extra-high-voltage electrical equipment 1139
04.
Electric railway equipment 1200
05.
Distributed Power System 1209
06.
Electrical Installation Technical Standard 1217
Recent past exam questions
- 2012 Exam Questions 1220
- 2013 Exam Question 1231
- 2014 Exam Question 1242
- 2015 Exam Question 1254
- 2016 Exam Question 1265
- 2017 Exam Question 1277
- 2018 Exam Question 1289
- 2019 Exam Question 1302
- 2020 Exam Questions 1313
- 2021 Exam Questions 1326
- 2022 Exam Questions 1340
- 2023 CBT Restoration Problem 1353
- 2024 CBT Restoration Problem 1367
- 2025 CBT Restoration Problem 1381

preface

If you are not satisfied with your current electrician or electrical industry technician license and are planning to obtain a technical engineer license in the future, please build up sufficient basic knowledge in the electrical field.
To do that, you need to change your study method from the beginning when you study to obtain a technician or industrial technician license.

Accordingly, this book focuses on the following:

First: The text content for each field is explained in detail so that even test takers without experience in the electrical field can easily understand it.
Second: We have placed various types of example problems in each text to make it easier for test takers to understand.
Third: We have prepared this book to help test takers understand the exam questions from the past 14 years (including CBT restoration questions) thoroughly verified and include detailed solution processes.

Therefore, I am confident that even test takers without basic electrical knowledge will be able to obtain the certification in a short period of time if they fully understand this study guide, and that it will also be useful in preparing for the future technical engineer exam.

Finally, I would like to express my deepest gratitude to those of you who are preparing for the written exam using this study guide. If you discover any typos or incorrect answers that may have occurred during the publishing process, please contact us so that we can correct them and strive to make this a better study guide.
Additionally, any errors in this application will be posted on the website's errata table, so please refer to it carefully.

?Internet address: www.ent1.co.kr?
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