NIOS 702 — Motor & Transformer Rewinding
This is a complete, free study companion for NIOS 702 — Motor & Transformer Rewinding — built around what the exam actually asks. The topics examiners repeat most are Transformer core types and laminated core purpose, Conservator and breather functions in power transformer, and Single-phase step-down centre-tapped transformer rewinding procedure. The syllabus runs to 12 chapters. Below you'll find the full topic-frequency ranking, the exam paper pattern, every chapter, a step-by-step study plan, and the official downloads — everything in one place.
Everything here is free. We're an independent student resource, not the official NIOS body, so always confirm the current syllabus and exam dates on the official NIOS website before you rely on them.
Key information
- Subject code
- 702
- Level
- Class 12
- Programme
- CL12
- Exam
- On-Demand Examination System
- Conducted by
- National Institute of Open Schooling (NIOS)
Most frequently examined topics
| # | Topic | Times asked |
|---|---|---|
| 1 | Transformer core types and laminated core purpose | 1 |
| 2 | Conservator and breather functions in power transformer | 1 |
| 3 | Single-phase step-down centre-tapped transformer rewinding procedure | 1 |
| 4 | Series-field winding and shunt-field winding of DC machine | 1 |
| 5 | Faraday’s law of electromagnetic induction | 1 |
| 6 | Lap winding and wave winding of DC armature | 1 |
| 7 | Induction motor starter necessity and AC starter types | 1 |
| 8 | Electrical degrees per slot calculation for 3-phase motor | 1 |
| 9 | Slots between three starting leads in 3-phase winding | 1 |
| 10 | Armature winding varnish impregnation procedure | 1 |
| 11 | Single-phase capacitor motor two-winding purpose | 1 |
| 12 | Centrifugal switch purpose in capacitor motor | 1 |
Counted across the official previous-year question papers we have analysed for this subject. It shows what has been asked before — it does not predict what will appear in your exam. Always confirm the current syllabus on the official portal.
What you will study (chapters)
- Chapter 1
- Electrical Safety, Tools and Measuring Instruments
- Chapter 2
- Winding Materials, Insulation and Workshop Practice
- Chapter 3
- Transformer Construction, Types and Working
- Chapter 4
- Transformer Winding Data and Coil Preparation
- Chapter 5
- Transformer Dismantling, Rewinding and Reassembly
- Chapter 6
- Transformer Testing, Faults and Maintenance
- Chapter 7
- Electric Motor Construction, Types and Working
- Chapter 8
- Motor Winding Data, Slots, Coils and Connections
- Chapter 9
- Motor Dismantling, Rewinding and Reassembly
- Chapter 10
- Motor Testing, Fault Finding and Maintenance
- Chapter 11
- Pump Operation, Installation and Maintenance
- Chapter 12
- Estimation, Records and Practical Job Work
Official textbook
- NIOS 702 — Motor & Transformer Rewinding — official textbook / study material — Free download from the official source.
How to study NIOS 702 — Motor & Transformer Rewinding and score well
- Start with the highest-frequency topics — In NIOS 702 — Motor & Transformer Rewinding, Transformer core types and laminated core purpose, Conservator and breather functions in power transformer, Single-phase step-down centre-tapped transformer rewinding procedure, and Series-field winding and shunt-field winding of DC machine appear again and again in past papers. Master these first — they return the most marks for the time you put in.
- Practise with previous-year papers — Solve the last 5–10 years of NIOS NIOS 702 — Motor & Transformer Rewinding papers under timed, exam-like conditions. Past papers show exactly which topics repeat and how questions are worded.
- Revise actively, not passively — Write a one-page summary for each of the 12 chapters — key definitions, formulas and the points examiners reward — then re-test yourself instead of re-reading.
- Mark your answers with the official scheme — After each practice paper, score yourself against the official marking scheme. It shows how marks are awarded step-by-step, so you learn to present answers the way examiners expect.
Exam tips: how to score higher in NIOS 702 — Motor & Transformer Rewinding
Where students lose marks: rushing the high-weightage questions, skipping the steps the marking scheme rewards, and saving easy sections for last. Read the whole paper first, attempt your strongest section early to bank marks, and always show your working.
Manage your time: split your time in proportion to the marks each section carries, keep a few minutes at the end to check, and never leave a question blank — a partial, structured answer still earns partial marks.
Frequently asked questions
What are the most important topics in NIOS 702 — Motor & Transformer Rewinding?
Based on past papers, the most frequently asked topics include Transformer core types and laminated core purpose, Conservator and breather functions in power transformer, Single-phase step-down centre-tapped transformer rewinding procedure. The full ranked list with how often each appears is in the "Most important topics" section above.
Where can I download NIOS 702 — Motor & Transformer Rewinding previous-year question papers?
Official NIOS previous-year question papers are available on the official NIOS website. Open the Question Papers section for the direct link, plus the exam pattern and the topics that repeat most.
How can I prepare for NIOS 702 — Motor & Transformer Rewinding faster?
Start with the highest-frequency topics, learn the exam pattern so you know how each section is marked, and practise with past papers. A subject-aware study tutor can quiz you on exactly these topics.
A Gyani AI tutor trained on the NIOS 702 — Motor & Transformer Rewinding syllabus and past papers can quiz you on the most-asked topics and show you exactly what to revise.