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BEL Technical Syllabus

BEL Recruitment (Probationary Engineer / Trainee Engineer)

12
Topics
45
Sub-topics
100
Questions

Technical is one of 6 sections in the BEL syllabus. It has 12 topics and 45 sub-topics, tested in CBT — Section B (Discipline Specific), with about 100 questions (100 marks). Electronics & Communication Engineering.

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BEL Technical: topic-wise syllabus

  1. 1

    Network Theory

    • KCL, KVL, Nodal & Mesh Analysis
    • Thevenin, Norton, Superposition, Reciprocity, Maximum Power Transfer
    • Transient Analysis — RC, RL, RLC Circuits
    • Two-Port Networks — Z, Y, h, ABCD Parameters
    • Resonance, Coupled Circuits & Filters
  2. 2

    Electronic Devices & Circuits

    • Semiconductor Physics — Doping, PN Junction
    • Diodes — Zener, LED, Rectifiers, Clippers, Clampers
    • BJT & FET — Biasing, Amplifiers, Load Line
    • Operational Amplifiers — Inverting, Non-inverting, Applications
  3. 3

    Analog Electronics

    • Multistage Amplifiers, Differential Amplifiers
    • Feedback Amplifiers, Oscillators (RC, LC, Crystal)
    • Power Amplifiers — Class A, B, AB, C
    • Wave Shaping, Multivibrators, Timers (555)
  4. 4

    Digital Electronics

    • Logic Gates, Boolean Algebra, K-Map Simplification
    • Combinational Circuits — MUX, DEMUX, Encoder, Decoder, Adder
    • Sequential Circuits — Flip-Flops, Counters, Shift Registers
    • ADC, DAC, Semiconductor Memories
  5. 5

    Signals & Systems

    • Signal Classification — CT, DT, Periodic, Even/Odd
    • LTI Systems — Properties, Impulse Response, Convolution
    • Fourier Series & Fourier Transform
    • Laplace Transform & z-Transform
  6. 6

    Communication Systems

    • Analog Modulation — AM, FM, PM (Modulation Index, Power, Bandwidth)
    • Digital Modulation — ASK, FSK, PSK, QAM
    • Pulse Modulation — PAM, PWM, PPM, PCM, Delta Modulation
    • Noise — SNR, Noise Figure, Friis Formula
  7. 7

    Control Systems

    • Block Diagrams, Signal Flow Graphs, Transfer Functions
    • Time Response — 1st & 2nd Order Systems, Steady-State Error
    • Stability — Routh-Hurwitz, Root Locus, Nyquist, Bode Plot
    • Compensators & Controllers — PID, Lead/Lag
  8. 8

    Electromagnetics & Antennas

    • Maxwell's Equations, EM Wave Propagation
    • Transmission Lines — Smith Chart, Impedance Matching, S-parameters
    • Waveguides & Resonators
    • Antenna Parameters, Radiation Pattern, Types
  9. 9

    Microprocessors & Microcontrollers

    • 8085 & 8086 Architecture, Instruction Set
    • Assembly Language Programming, Interfacing
    • Microcontroller basics — 8051, Embedded Systems
  10. 10

    Measurements & Instrumentation

    • DC/AC Bridges — Wheatstone, Kelvin, Maxwell, Schering
    • Electronic Instruments — CRO, DMM, Signal Generator, Spectrum Analyzer
    • Sensors & Transducers — Temperature, Pressure, Displacement
  11. 11

    Power Electronics

    • SCR, MOSFET, IGBT — Characteristics, Triggering, Protection
    • Rectifiers, Inverters, Choppers, Cycloconverters
    • DC & AC Drives, Power Supplies
  12. 12

    Digital Signal Processing

    • DFT, FFT — Properties, Computation
    • FIR & IIR Filter Design
    • Sampling Theorem, Aliasing, Quantization

Frequently asked questions

What topics are in the BEL Technical syllabus?

Technical for BEL has 12 topics: Network Theory, Electronic Devices & Circuits, Analog Electronics, Digital Electronics, Signals & Systems, Communication Systems, Control Systems, Electromagnetics & Antennas, Microprocessors & Microcontrollers, Measurements & Instrumentation and 2 more, with 45 sub-topics in all.

How many questions come from Technical in BEL?

About 100 questions (100 marks) in CBT — Section B (Discipline Specific). Always check the latest notification, as numbers can change.

How do I practise BEL Technical on Topicly?

Pick a topic above and study it your way — step-by-step chat, a quiz, a formula sheet or a voice call with Sia. Topicly tracks each sub-topic so you know what's left. It's free to start.

Compiled from official notifications for study purposes. Always confirm with the conducting body's latest notification.