If your IGNOU BSCAEY Term End exam is scheduled for 2026 or later, the BEY 012 Question Paper December 2025 is one of the most practical revision tools you can keep on your phone. This is the actual paper conducted by IGNOU in December 2025, which means the derivation style, diagram load and topic spread match what your own exam will look like. Our solved version helps you handle theory, derivations and circuit questions in one focused PDF.
About This Solved Paper
| Prepared by | Unnati Education, IGNOU-experienced academic content writer |
|---|---|
| Subject expert qualification | Graduate with specialization in Electrical Machines and Electronic Devices |
| Programme | IGNOU Bachelor of Science Applied Science Energy (BSCAEY) |
| Institution Reference | IGNOU December 2025 Term-End Examination |
You can download the BEY 012 Solved Question Paper December 2025 directly from this page as a clean PDF file. It opens on any mobile or laptop, which is useful if you are a working electrical technician or junior engineer revising between shifts. Most BSCAEY students notice that practicing the actual paper with worked out derivations is far more productive than reopening every electrical or electronics unit of the course book again from start.
What is BEY 012 Question Paper December 2025 Definition
The BEY-012 December 2025 question paper is the official IGNOU Term End Examination paper for Electrical and Electronics Science, conducted in December 2025 for BSCAEY students. It carries 70 marks, runs for three hours, and asks you to attempt any five questions of equal marks, each worth 14 marks.
The paper tests your grip on basic electrical and electronics engineering. You are expected to handle AC power analysis, transformer and DC generator EMF equations, motor comparisons, semiconductor device characteristics, digital flip flops, and short notes on instrumentation and magnetic theory with clear diagrams and proper derivations.
About IGNOU BEY-012 Electrical and Electronics Science
BEY 012 is a core paper in the IGNOU BSCAEY programme. It builds the electrical and electronics foundation that supports later energy subjects. The course covers DC and AC circuits, power concepts, single phase transformers, DC machines, three phase induction motors, semiconductor devices like diodes, BJTs and MOSFETs, digital electronics with flip flops, transducers like LVDT, special devices like UJT, and magnetism through Biot Savart law. Students who combine theory with neat labelled circuit diagrams tend to score noticeably higher.
BEY 012 Question Paper December 2025 Exam Pattern and Marks Breakdown (BEY-012 December 2025 Question Paper)
The paper runs for 3 hours and carries 70 marks in total. There are seven questions in the paper, and you are required to attempt any five of them. All questions carry equal marks, which means each question is worth 14 marks. The paper does not have separate sections. Many questions are split into two parts of 7 marks each, and Question 7 offers short notes of 7 marks each where you attempt any two from three options given.
All Questions BEY 012 Question Paper December 2025 IGNOU (Complete List)
Here is the exact question paper you will study from. The original IGNOU December 2025 paper is attached below for your reference.
Note: Attempt any five questions. All questions carry equal marks.
1. (a) Discuss the concept of electrical power and energy. Write the mathematical expressions and explain their practical significance. (7) (b) Compare and contrast active power, reactive power and apparent power in AC circuits. Derive their mathematical relationships. (7)
2. (a) Explain construction and working principle of a single phase transformer with a neat diagram. (7) (b) Derive the EMF equation of a transformer. (7)
3. (a) Explain the construction and working principle of a DC generator. (7) (b) Derive the EMF equation of a DC generator. (7)
4. (a) Compare squirrel cage and slipring induction motor in terms of construction, operation and application. (7) (b) Draw and explain V-I characteristics of PN junction diode. Also, write down the expression for diode current. (7)
5. (a) Draw and explain the input and output characteristics of BJT in Common Emitter (CE) configuration. (7) (b) Describe the construction and working of a MOSFET in enhancement mode. (7)
6. Explain the following with circuit diagram and truth table: (7+7=14) (i) JK Master slave flip flop (ii) Clocked D-flip flop
7. Write short notes on any two of the following: (2 x 7 = 14) (a) Linear Variable Differential Transformer (LVDT) (b) Unijunction Transistor (UJT) (c) Biot-Savart's Law and its applications
BEY 012 Question Paper December 2025 Syllabus Topics Covered
The paper maps cleanly to the BEY 012 syllabus. You see AC power concepts, including active, reactive and apparent power with power factor. Transformer topics cover construction, working and EMF equation. DC machine topics cover construction, working and EMF derivation of a DC generator. Induction motor types, squirrel cage and slipring, are compared. Semiconductor devices include PN diode V I characteristics, BJT CE input and output curves, and MOSFET enhancement mode. Digital electronics is covered through JK master slave and clocked D flip flops. Short notes include LVDT, UJT and Biot Savart law.
Sample Answer Preview BEY-012 Electrical and Electronics Science Solved Question Paper Explanation
Take Question 2 b on transformer EMF equation. A weak answer just writes the final formula. A scoring answer starts from Faraday's law, expresses flux as a sine function, finds rate of change of flux, takes RMS value using form factor, and arrives at E equals 4.44 f N phi max. It defines every symbol and adds units. Our solved paper shows each algebraic step, with a clean sinusoidal flux diagram next to the derivation, so you can reproduce it easily under exam conditions.
How to Write High-Scoring Answers in BEY 012 Question Paper December 2025
Start each 14 mark answer with a short definition or opening paragraph. For derivations like transformer or DC generator EMF, show assumptions, starting equation, step by step algebra and boxed final result. Use neat labelled circuit diagrams for flip flops, BJT, MOSFET, transformer and DC generator. Draw V I and input output curves on clear axes with scale labels. For short notes, stick to one page each with a diagram, working principle and one application. Keep handwriting neat, use margins, and avoid scribbling.
Who Should Use This BEY-012 Solved Question Paper December 2025?
This solved paper is made for IGNOU BSCAEY students appearing in June 2026, December 2026 or later Term End cycles. It also helps reappear candidates, backlog students clearing BEY 012, and working professionals from electrical contracting firms, utility companies, solar and wind O and M teams, and electronics manufacturing units who have joined BSCAEY as a career skill. If you are balancing shift duty, family and studies, this paper is a focused, time saving way to prepare without reopening every unit again.
Why This is Better Than Free BEY-012 December 2025 Question Paper PDFs and Telegram Files
Free PDFs on Telegram and random blog sites often have half done derivations, missing circuit diagrams, or theory that does not match IGNOU BSCAEY style. Some files skip the flip flop question entirely. Others give one paragraph for a 14 mark DC generator question, which will clearly not score. Our solved paper is written by a subject expert, checked against the official December 2025 paper, and formatted in proper engineering answer style with diagrams and equations where needed. You save time and marks.
Student Reviews BEY-012 Solved Question Paper by Unnati Education
Prashant from Noida, working in an electrical panel manufacturing unit, said the transformer EMF derivation was written exactly the way his senior engineer had once explained. Ritu from Coimbatore told us the JK master slave flip flop truth table and timing diagram finally made digital electronics feel clear. Aditya, a first time BSCAEY learner from Varanasi, wrote that the MOSFET enhancement mode answer was the cleanest explanation he had read online during his full preparation cycle for this paper.
How to Get the BEY-012 Solved Question Paper December 2025 Step by Step
First, click the download button at the top of this page. Second, complete the quick checkout, it takes less than a minute. Third, the solved PDF reaches your email instantly, and it is also saved inside your Unnati Education account dashboard. Fourth, open it on phone or laptop and revise question by question. If you face any trouble with download or payment, our support team replies quickly on WhatsApp and email.
Frequently Asked Questions BEY 012 Question Paper December 2025 IGNOU
Is this the official IGNOU BEY 012 December 2025 paper?
Yes, this is the actual Term End Examination paper conducted by IGNOU in December 2025 for BEY 012 under the Bachelor of Science Applied Science Energy BSCAEY programme. Every question on this page is reproduced exactly as it appeared in the official paper, which makes it a reliable source for your 2026 exam preparation and for any future Term End attempt you may plan later in your studies or backlog clearance.
Will this paper help me for my 2026 exam?
It will help you strongly. IGNOU often repeats question themes in BEY 012, especially on transformer EMF equation, DC generator EMF derivation, induction motor comparison, BJT CE characteristics, MOSFET working and JK flip flops. By practicing the December 2025 paper with solved answers, you understand the examiner style, the expected length for a 14 mark question, and how to structure diagram plus derivation answers for full marks in your Term End exam.
Are derivations and circuit diagrams included?
Yes. Since BEY 012 is a derivation and diagram heavy paper, our solved PDF includes step by step derivations for transformer EMF and DC generator EMF, labelled construction diagrams for transformer and DC generator, V I curves for PN diode, input and output curves for BJT CE, MOSFET structure, and full circuit diagrams with truth tables for JK master slave and clocked D flip flop. Every figure is drawn in a clean style that examiners prefer.
Can I use this for my BEY 012 assignment too?
You can use it as a strong reference while writing your BEY 012 assignment, especially on topics like AC power, transformer, DC generator, induction motor, semiconductor devices and flip flops. We recommend you rewrite the ideas and redraw the diagrams in your own style, because IGNOU checks BSCAEY assignments for originality. Treat this solved paper as a study guide and a model answer set, not a direct copy source for your final assignment submission.
Is the download instant after payment?
Yes, delivery is instant. Once your payment is confirmed, the BEY 012 solved question paper PDF is sent to your registered email and also saved inside your Unnati Education account dashboard. You can open it on mobile, tablet or laptop, and there is no limit on how many times you download, print or revise the paper during your BSCAEY preparation journey in any upcoming Term End exam cycle across years.
About Unnati Education IGNOU Study Material Experts
Unnati Education is an academic resource platform built for IGNOU students across India. Our team includes graduates, postgraduates, engineers and subject mentors who have personally handled IGNOU coursework. We prepare solved question papers, handwritten assignments and revision notes in student friendly language. Our focus is simple, we want you to stop depending on unreliable free files and start preparing with material you can actually trust during your exam cycle.
Explore More IGNOU BEY-012 Solved Papers and Study Material
You can also explore BEY 012 solved assignments, previous year question papers from June and December cycles, important questions lists, and short revision notes on our website. Together, these resources give you a complete preparation package for Electrical and Electronics Science, from the first reading of the course to your final revision the night before your IGNOU BSCAEY Term End examination in any upcoming session.