BSNL JTO Recruitment 2026: Apply Online for 100 Junior Telecom Officer Posts, Syllabus & Notification

BSNL JTO Syllabus 2026: Topic-Wise Exam Topics & Blueprint

To help you clear the upcoming exam, we have broken down the official BSNL Junior Telecom Officer syllabus into an easy-to-digest guide. The syllabus is split into two core technical engineering papers and one general awareness section.

Section 1: Engineering Stream I

(𝟓𝟎 Questions | 𝟐𝟎𝟎 Marks)

This initial technical section evaluates your foundational knowledge of electrical engineering principles, structural material physics, and basic circuitry network behavior.

• Materials & Components: Atomic structure and core traits of electrical engineering materials. You will need to cover conductors, insulators, and semiconductors alongside specialized materials like magnetic, piezo-electric, ferroelectric, optical, ceramic, and superconducting variations. It also includes the behavior of passive components like capacitors, resistors, inductors, quartz crystals, ferrites, and ceramic resonators.
• Physical Electronics & Semiconductor Devices: Behavior of holes and electrons in semiconductor materials, carrier statistics, and current flow dynamics. Expect questions on the Hall effect, junction theory, and integrated circuits (ICs). Focus on the traits of BJTs, diodes, FETs, and key power switching devices like power MOSFETs, SCRs, and CTOs.
• Network Theory: Advanced network analysis models and core theorems. Covers transient and steady-state sinusoidal responses, cascading consequences, and transmission benchmarks like rise time and delay (including Elmore’s definitions). Also tests the basics of network synthesis.
• Electromagnetic Theory: Core principles of transmission lines, including standing waves, impedance matching, and microstrip lines. This unit also touches on the basics of resonators, waveguides, and introductory antenna theory.
• Instrumentation & Electronic Measurements: Principles of error analysis, basic measurement standards, and checking electrical variables. Study the mechanisms behind analog and digital measuring instruments, telemetry basics, transducers, and measuring physical properties like temperature, humidity, and pressure.
• Power Electronics: Characteristics of power semiconductor devices such as thyristors and power transistors. This includes the inner workings of phase regulators, AC-to-DC converters, single/three-phase DC-to-DC converters, switched-capacitor networks, inverters, and PWM (pulse width modulation) design.

Section 2: Engineering Stream II

(𝟓𝟎 Questions | 𝟐𝟎𝟎 Marks)

The second technical section shifts your focus toward computer architecture, programming logic, data protocols, and high-frequency communication channels.

• Analog Electronic Circuits: Transistor biasing methods and stabilization techniques. Focus on small-signal analysis, wideband methods, power/tuned amplifiers, frequency response, and feedback loops. It also covers operational amplifiers (Op-Amps), rectifiers, linear integrated circuits, power supply design, and pulse-shaping waveform generators.
• Digital Electronic Circuits: Using transistors as active switching elements, Boolean algebra, and K-Maps (Karnaugh Maps) optimization. Review standard IC logic families (TTL, DTL, ECL, CMOS, NMOS, PMOS) alongside combinational logic like multiplexers, adders, and digital comparators. Sequential circuits including registers, counters, and various flip-flops (R-S, J-K, D, T) are heavily featured.
• Control Systems: Analyzing steady-state and transient responses in control frameworks. Understand how feedback alters system stability, root locus charts, frequency response math (phase/gain margins, Nichols charts), industrial controllers, and compensator designs.
• Communication Systems: Fundamental elements of information theory. Covers analog and digital modulation/detection, data reconstruction, quantization patterns, coding, and multiplexing frameworks (TDM and FDM). You should also study equalization, fiber optics, satellite networks, and signal propagation paths across HF, VHF, UHF, and microwave spectrums.
• Microwave Engineering: Mechanics of microwave tubes, solid-state devices, amplifiers, and high-frequency wave generation. Expect questions on microwave antennas, microstrip circuits, waveguides, component measurements, lasers, masers, and terrestrial microwave communication setups.
• Computer Engineering: Data representation and binary number systems. Refresh your knowledge of basic data structures, programming logic in high-level programming languages (like C), and processor design architecture. This also includes memory structures, I/O organization, microprocessor instructions, assembly language, and interfacing layouts.

Section 3: General Ability Test

(𝟐𝟎 Questions | 𝟖𝟎 Marks)

Though shorter than the engineering sections, this non-technical segment is crucial for boosting your final merit rank among the limited 100 vacancies.

• General English: Evaluates reading comprehension skills, English grammar essentials, vocabulary words, sentence correction rules, and everyday phrase usage.
• Current Affairs & General Knowledge: Highlights major national and international news events from the past year, alongside essential Indian history and geographical facts.
• Everyday Science: Covers basic scientific concepts, observations, and physics/chemistry rules experienced in daily life.
• Telecom Industry Awareness: Focuses on the evolution of global networks, the latest technical updates (such as 5G rollouts and 6G development roadmaps), regulatory policies, and news tied to BSNL’s infrastructure upgrades.