12th electronics syllabus and paper pattern

S.B TEST PRO HUB

By S.B TEST PRO HUB

Maharashtra State Board Electronics (Std. XII) Syllabus & Paper Pattern 2025-26 | SB Test Pro Hub

Syllabus for 2025-26

Note: The syllabus is based on the curriculum provided, assumed to be in effect for 2025-26 unless updated by the Maharashtra State Board. Exams are expected from February 11 to March 18, 2026.

Paper I: Applied Electronics

Chapter Name Marks
Electronic Instrumentation 15 Marks
DC Power Supplies 20 Marks
Transducers 10 Marks
Operational Amplifiers 25 Marks
Modern Electronic Communication 20 Marks
Study of ICs 10 Marks

Details of Paper I Chapters:

  • Electronic Instrumentation: Detailed study of CRT (Mathematical part not expected), How a CRO displays waveform, Block diagram of CRO, Front panel controls, Applications of CRO, Function Generator: Basic elements of function generator, Digital Multimeter: block diagram.
  • DC Power Supplies: Half wave rectifier, Full wave rectifier, Bridge Rectifier, Filter circuit, Load regulation, Line regulation, Zener as a voltage regulator, Basic principle of voltage regulation using transistor circuit, Three terminal regulator ICs, Basic principle of SMPS and its advantages.
  • Transducers: Classification of transducers, Selection of transducers, Types of transducers, Working of following transducers Thermistor, LDR, Capacitive transducer, LVDT, Piezoelectric crystal, Loudspeaker, Gas sensor, Opto-coupler.
  • Operational Amplifiers: Necessity of OP-AMP, Block diagram of OP-AMP, OP-AMP parameters, Linear applications of OP-AMP, Inverting and Non-Inverting Amplifiers, Buffer amplifier, Concept of virtual ground, Adder, Subtractor, Integrator and Differentiator circuits, Nonlinear applications: Comparator, Schmitt trigger.
  • Modern Electronic Communication: The elements of communication system, Types of electronic communication, Survey of communication applications, Electronic spectrum, Concept of bandwidth, AM principles, Modulation index and percentage of modulation, Sidebands and frequency domain, Frequency modulation (Principle), Phase modulation (Principle), Types of communication, Satellite, Satellite communication system, Application overview of Satellite communication, Concept of digital communication, Introduction to computer networks, Use of fiber optics in communication, Review of some modern communication applications: Cellular radio and Radar.
  • Study of Integrated Circuits: Block diagram of timer, Pin functions and simple applications of following ICs 555, 741 and LM 317, Use of IC 555 as astable and monostable.

Paper II: Digital Electronics

Chapter Name Marks
Number Systems 15 Marks
Logic Gates 15 Marks
Semiconductor Digital ICs 10 Marks
Combinational Logic Circuits 20 Marks
Electronic Counters 20 Marks
A/D and D/A Converters 12 Marks
Computer Fundamentals 08 Marks

Details of Paper II Chapters:

  • Number Systems: Decimal, Binary and Hexadecimal number system, BCD code, Binary to decimal and decimal to binary conversion, Hex to Binary and Binary to Hex conversion, Hex to Decimal and Decimal to Hex conversion, ASCII code, Binary Arithmetic.
  • Logic Gates: Study of NOT, OR, AND gates, Symbols and truth tables, Boolean algebra, NAND, NOR as universal building blocks, De-Morgan's theorem, EX-OR gate, Half Adder, Full Adder.
  • Semiconductor Digital ICs: Introduction to logic families, Bipolar logic families and unipolar logic families, Characteristics of Digital ICs, TTL NAND gate, CMOS, NAND, NOT, NOR gates, Open collector TTL NAND gate, Tristate concept, Tristate TTL NAND gate.
  • Combinational Logic Circuits: Multiplexers and their use in combinational logic design, Combinational logic design using Multiplexers, De-multiplexer and its use in combinational logic design, Encoder-Priority encoders, Decoder-decoder and drivers for Display Device.
  • Electronic Counters: S-R Flip-flop, Clock, Clocked S-R flip-flop, D flip-flop, T flip-flop, J-K flip flop, Edge triggered flip-flop, Master slave concept, Ripple or Asynchronous counters, Decade Counter, Synchronous counters, Register, Shift registers.
  • A/D and D/A Converters: Introduction, Digital to Analog converter, Weighted resistor ladder, R-2R ladder, Analog to digital converter, Counter type ADC, Successive approximation A/D converter.
  • Computer Fundamentals: Block diagram of computer, Concepts of bus, Study of Input Output devices like Keyboard, Mouse, Light pen, Digitizer, Printer and its types, Plotter, Study of memory devices like hard disk, Floppy drives, Semiconductor memory, Magnetic tape, Specification of Computer.

Marks Distribution for 2025-26

Total Marks: 200 (Theory: 100 Marks, Practicals and Team Work: 100 Marks)

Component Marks
Theory (Paper I + Paper II) 100 Marks (50 Marks each)
Practicals and Team Work (Paper I + Paper II) 100 Marks (50 Marks each)

Note: Each paper (Paper I and Paper II) contributes 50 marks to the theory total, with practicals and team work also contributing 50 marks each.

Question Paper Format for 2025-26

Note: The question paper format is based on the provided structure, with adjustments for 25% objective questions (MCQs) as per 2025-26 guidelines. Each paper is of 50 marks.

Question Details Marks
Q.1 (A) Compulsory (Attempt any Two)
(a) - 3 Marks
(b) - 3 Marks
6 Marks
Q.1 (B) (a) - 3 Marks
(b) - 3 Marks
(c) - 3 Marks
6 Marks
Q.2 (A) Attempt any Two
(a) - 3 Marks
(b) - 3 Marks
6 Marks
Q.2 (B) Attempt any One
(a) - 4 Marks
4 Marks
Q.3 (A) Attempt any Two
(a) - 3 Marks
(b) - 3 Marks
(c) - 3 Marks
6 Marks
Q.3 (B) Attempt any One
(a) - 4 Marks
4 Marks
Q.4 (A) Attempt any Two
(a) - 3 Marks
(b) - 3 Marks
6 Marks
Q.4 (B) Attempt any One
(a) - 4 Marks
4 Marks
Q.5 Attempt any Two
(a) - 5 Marks
(b) - 5 Marks
(c) - 5 Marks
10 Marks
Q.5 (OR) Attempt any Two
(a) - 5 Marks
(b) - 5 Marks
(c) - 5 Marks
10 Marks
Total 50 Marks

Adjusted for 25% Objective Questions: The current format includes a mix of short and long answers. To align with the 25% MCQ requirement (12.5 marks per paper), add 12 MCQs (1 mark each) as Q.1(A) with 6 compulsory MCQs, reducing Q.1(B) to 4 marks (e.g., 2 sub-questions of 2 marks each).

```


You May Like These


About US

About US

Lifelong learning is possible only for a curious learner. Each passing day is something new for us and we hope these lifelong learning quotes help you in your growth.

Read More
About US