KSEB Sub Engineer: a 6-month preparation plan for working diploma holders
The ranked list from the last KSEB Sub Engineer notification (Cat. No. 553/2021) was published on 29 November 2023, and it is close to expiry. A new notification is expected. If you start now, six months is enough to be fully ready, even with a job and a family. Here is how.
First, know the paper
The written exam is for 100 marks in six modules, and the weights tell you where to spend time:
| Module | Marks |
|---|---|
| II. Power Systems and Utilisation | 20 |
| I. Basic Electrical Engineering | 16 |
| III. Electrical Measurements and Instrumentation | 16 |
| IV. Electrical Machines | 16 |
| V. Analog and Digital Electronics, Microprocessors | 16 |
| VI. Power Electronics and Industrial Automation | 16 |
Full topic list on our KSEB Sub Engineer exam page, with a link to the official syllabus.
The 6-month plan
Month 1: Basic Electrical Engineering
Start where everything else depends: Ohm's law, Kirchhoff's laws, DC circuits and network theorems. If you have been away from books for years, this month rebuilds your confidence. Solve problems every day, not just read.
Month 2: Electrical Machines
DC machines, transformers, induction and synchronous machines. This is the subject most diploma holders know from work, so connect each topic to what you have seen in the field.
Month 3: Power Systems and Utilisation
The heaviest module at 20 marks, and the core of KSEB's work: generation, transmission, distribution, power factor, relays, circuit breakers and renewable energy. Give it the full month.
Month 4: Measurements and Instrumentation, and Power Electronics
Two 16-mark modules. Measuring instruments and errors in the first half of the month; thyristors, converters and industrial automation in the second.
Month 5: Analog and Digital Electronics, Microprocessors
Often the weakest area for Electrical diploma holders. Do not skip it. Sixteen marks is too many to give away.
Month 6: Revision and full mocks
Revise all six modules from your own short notes, and write full timed mocks with negative marking. Spend more time reviewing each mock than writing it.
Three habits that matter more than the plan
- A little every day beats a lot on Sunday. One focused hour on a working day, every day, adds up to more than a long weekend session.
- Practise questions daily. Reading a chapter feels like progress; solving ten questions on it is progress.
- Take a weekly mock and review it. Our guide on how to use a weekly mock exam explains how.
One preparation, two exams
Kerala PSC uses the same syllabus for Workshop Instructor / Demonstrator (Electrical), Cat. No. 048/2026, whose exam is awaited. So this plan prepares you for both.
Prepare with Engineering PSC
Our Sub Engineer level course covers all six modules. The live class is Monday to Friday evenings from 7 to 8, after work, and every class is recorded, so you can catch up the same night. You also get printed books, 10 questions a day and a weekly mock on Saturday and Sunday with negative marking. Message us on WhatsApp to join the next batch.