Please note — cover year vs approval: BTEUP's own file for this curriculum prints "YEAR 2025-2026" on its cover, while carrying the approval line "UPDATED AND APPROVED BY BOARD OF TECHNICAL EDUCATION U.P. LUCKNOW IN C.D.C MEETING HELD ON 16.07.2026" on every page. It is filed in BTEUP's 2026-27 folder (folder2627), so it is treated here as the 2026-27 syllabus on the strength of that approval. The scheme it carries is identical, subject for subject and mark for mark, to the 2025-26 scheme.
Electric Machine-1 — What This Subject Is About
Motors and transformers are the workhorses of electrical engineering — they turn electricity into motion and move it from one voltage to another. Electric Machine-1 teaches you to maintain them: DC generators and motors, single-phase and three-phase transformers, and special-purpose transformers. This is the theory paper 3.2; its practical work is the separate lab subject 3.5 (Electric Machine-1 (Lab)).
The five units are DC generators, DC motors, single-phase transformers, three-phase and special-purpose transformers, and the maintenance of DC machines and transformers. Single-phase transformers carry the most weightage at 23% (12 periods). It is a theory subject (L 4 – P 0), worth 100 marks and 4 credits, with 9 reference books.
Subject 3.2 (Theory) • Total 100 Marks • 4 Credits • L 4 – P 0 • 3rd Semester — Electrical Engineering • Session 2026–27
About this document: This is the theory paper 3.2. Its practical work is the separate lab subject 3.5 (Electric Machine- 1 (Lab)).
What You Will Study
Unit – I: DC Generators (10 Periods, 20%)
Classification of insulating materials according to temperature, Insulating materials used in DC machines and transformers (Emery paper, mica, varnish, sleeves, cotton tape, paper and oil); DC generator: construction, parts, materials and their functions; Principle of operation of DC generator: Fleming's right-hand rule, schematic diagrams, e.m.f. equation of generator, armature reaction, commutation; Applications of DC generators; Importance of DC generators in various industries.
Unit – II: D.C. Motors (10 Periods, 20%)
DC motor: Types of DC motors; Fleming's left-hand rule, Principle of operation of Back e.m.f. and its significance, Voltage equation of DC motor; Torque and Speed; Armature torque, Shaft torque, BHP, Brake test, losses, efficiency; DC motor starters: Two Point, Three-point and Four Point starters; Speed control of DC shunt and series motor: Flux and Armature control; Brushless DC Motor: Construction and working.
Unit – III: Single Phase Transformers (12 Periods, 23%)
Types of transformers: Shell type and core type; Construction: Parts and functions; Transformer: Principle of operation, EMF equation of transformer: Derivation, Voltage transformation ratio, Significance of transformer ratings; Transformer No-load and on-load phasor diagram, Leakage reactance; Equivalent circuit of transformer: Equivalent resistance and reactance; Voltage regulation and Efficiency: Direct loading, OC/SC method, All day efficiency; Polarity tests on single phase transformers.
Unit – IV: Three Phase Transformers & Special Purpose transformers (12 Periods, 20%)
Three Phase Transformers: Construction, cooling, three-phase transformers connections, three-phase to two phase conversion (Scott Connection), parallel operation of three phase transformer; Comparison between Bank of three single phase transformers & Single unit of three phase transformer; Transformer accessories: Conservator, Breather, Explosion vent, Buchholz relay – ON load and OFF load tap changer; Distribution and Power transformers; Auto Transformer and its applications.
Unit – V: Maintenance of DC Machines and Transformers (12 Periods, 17%)
Importance of Maintenance: Preventive and Breakdown Maintenance; Causes of Sparking in Commutator, Defects in Commutator and Remedies, Resurfacing of Commutator and Brushes, Defects in DC Armature winding; Maintenance of Transformer Oil, Transformer oil tester, Acidity test, BDV test; Earthing: Measurement of earth resistance.
Complete Syllabus
The full examination scheme, the complete practicals list and the reference books from the official syllabus. The unit-wise topics are in the "What You Will Study" section above.
Examination Scheme
| Code | Paper | Type | L – P | Credits | Internal | External | Total |
|---|---|---|---|---|---|---|---|
| 3.2 | Electric Machine- 1 | Theory | 4 – 0 | 4 | 40 | 60 (3 hrs) | 100 |
| Electric Machine- 1 (Theory) Total | 4 | 40 | 60 | 100 | |||
Units at a Glance
| Unit | Topic | Periods | Marks Share |
|---|---|---|---|
| I | DC Generators | 10 | 20% |
| II | D.C. Motors | 10 | 20% |
| III | Single Phase Transformers | 12 | 23% |
| IV | Three Phase Transformers & Special Purpose transformers | 12 | 20% |
| V | Maintenance of DC Machines and Transformers | 12 | 17% |
Reference Books
As listed in the syllabus:
- G.C. Garg & P.S. Bimbhra, Electrical Machines, Vol-I, II, Khanna Book Publishing House (ISBN: 978-9386173-447, 978-93-86173-607), New Delhi
- Dr. T.D.Bisht, Pooja Yadav, Ashish Sahoo Electrical Machine-I, Asian Publishers, Muzaffarnagar ISBN no. 978-93-91541-30-9
- Mittle, V.N. and Mittle, Arvind., Basic Electrical Engineering, McGraw Hill Education, New Delhi, ISBN: 9780070593572
- Kothari, D. P. and Nagrath, I. J., Electrical Machines, McGraw Hill Education. New Delhi, ISBN: 9780070699670
- Bhattacharya, S. K., Electrical Machines, McGraw Hill Education, New Delhi, ISBN: 9789332902855
- Mehta, V. K. and Mehta, Rohit, Principles of Electrical Machines, S. Chand and Co. Ltd., New Delhi, ISBN: 9788121930888
- Theraja, B.L., Electrical Technology Vol-II (AC and DC machines), S. Chand and Co. Ltd., New Delhi, ISBN: 9788121924375
- Bandyopadhyay, M. N., Electrical Machines Theory and Practice, PHI Learning Pvt. Ltd., New Delhi, ISBN: 9788120329973
- Murugesh Kumar, K., DC Machines and Transformers, ISBN: 9788125916055
Frequently Asked Questions
How many marks is Electric Machine-1 worth in the 3rd semester?
100 marks, 4 credits. It is a theory subject (L 4 – 0): internal 40, external 60 (3 hrs).
Which unit carries the most weightage in Electric Machine-1?
Single Phase Transformers, 23% (12 periods).
Is there any practical work in Electric Machine-1?
No — the official syllabus lists no practicals for this subject.
Which books should I read for Electric Machine-1?
9 reference books are listed in the official syllabus — the full list is in the Complete Syllabus section above.
How can I download the Electric Machine-1 syllabus PDF?
The PDF is free to download — use the download link in the Download section below. It is prepared by KAMALDNP Academy from the official BTEUP syllabus.
Is there a separate lab for this subject?
Yes — the practical work is the separate lab subject 3.5, Electric Machine-1 (Lab): 15 practicals, of which you perform any 10. This post covers the theory paper 3.2 only.
Related Syllabus Posts
- BTEUP Electrical 3rd Semester Syllabus 2026-27
- Electrical Engineering Complete Syllabus 2026-27
- Basics of Power Generation Systems — BTEUP Electrical 3rd Semester Syllabus 2026-27
- Electrical Circuits — BTEUP Electrical 3rd Semester Syllabus 2026-27
- Electrical and Electronic Measurements — BTEUP Electrical 3rd Semester Syllabus 2026-27
Download the Electric Machine-1 Syllabus PDF
Download the complete Electric Machine-1 syllabus PDF below — prepared by KAMALDNP Academy, with the full topic list and reference books.
Download the Electric Machine-1 Syllabus PDF
Source: BTEUP 2nd Year Electrical Engineering curriculum (folder2627). The file's cover prints "YEAR 2025-2026", but the approval line "UPDATED AND APPROVED BY BOARD OF TECHNICAL EDUCATION U.P. LUCKNOW IN C.D.C MEETING HELD ON 16.07.2026" appears on every page (95 times), and the file is treated here as the 2026-27 syllabus on the strength of that approval. Topic lists follow the official syllabus; short explanations are the author's own plain-English summaries, not syllabus text. Please confirm with your own polytechnic for any local changes.
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