BSNL JTO 2026 Syllabus, Exam Pattern & Details

BSNL JTO 2026 Syllabus, Exam Pattern & Details

The BSNL Junior Telecom Officer (JTO) 2026 recruitment has released its comprehensive syllabus and exam pattern. This article consolidates all essential information to help aspirants plan their preparation effectively.

Short Information

Bharat Sanchar Nigam Limited (BSNL) is hiring 100 Junior Telecom Officers. The selection is conducted through a single‑stage Computer‑Based Test (CBT) comprising 120 objective questions worth 480 marks to be completed in 3 hours. The exam includes two engineering streams and a General Ability Test, with a negative marking scheme of ‑1 for each wrong answer.

Exam Pattern

• Marking Scheme: +4 for a correct answer, –1 for an incorrect answer, 0 for unattempted.
• Negative Marking: Yes (‑1 per wrong answer).

Subject‑wise Syllabus

Section I – Engineering Stream I

1. Materials and Components

   • Electrical & thermal conductivity of metals
   • Intrinsic & extrinsic semiconductors
   • Magnetic materials, dielectric insulators
   • Passive components: resistors, capacitors, inductors

2. Physical Electronics, Electron Devices & Integrated Circuits

   • P‑N junction, Zener, tunnel diodes
   • BJTs, FETs, SCRs, CMOS technology
   • Opto‑electronic devices: LEDs, photodiodes, LCDs

3. Network Theory

   • Thevenin’s, Norton’s, Superposition, Maximum Power Transfer theorems
   • Transient & steady‑state circuit analysis
   • Two‑port network parameters
   • Transmission line theory and applications

4. Electromagnetic Theory

   • Maxwell’s equations & boundary conditions
   • Wave propagation in free space & guided media
   • Waveguides (rectangular & circular)
   • Antenna theory & radiation patterns

5. Electronic Measurements & Instrumentation

   • Types of measurement errors and their sources
   • CRO, signal generators, frequency meters, Q‑meters
   • Transducers: thermocouple, strain gauge, LVDT
   • Data acquisition, telemetry, remote sensing

6. Power Electronics

   • Thyristors, TRIACs, GTOs and triggering methods
   • AC‑DC converters, rectifiers, DC‑AC inverters
   • Switched‑Mode Power Supplies (SMPS) & PWM techniques

Section II – Engineering Stream II

1. Analog Electronic Circuits

   • Small‑signal & large‑signal amplifiers
   • Feedback amplifiers, RC/LC/crystal oscillators
   • Operational amplifiers and applications
   • Regulated & unregulated power supply circuits

2. Digital Electronic Circuits

   • Boolean algebra, Karnaugh maps, logic simplification
   • Combinational logic: adders, multiplexers, decoders
   • Sequential circuits: flip‑flops, registers, counters
   • Memory devices: RAM, ROM, EEPROM
   • A/D & D/A converters

3. Control Systems

   • Open‑loop & closed‑loop (feedback) systems
   • Time‑domain & frequency‑domain analysis
   • Stability criteria: Routh‑Hurwitz, Nyquist
   • Root locus, Bode plots, PID controller tuning

4. Communication Systems

   • Analog modulation: AM, FM, PM
   • Digital modulation: ASK, FSK, PSK, QAM
   • Multiplexing: TDM, FDM, WDM
   • Noise analysis, SNR, optical fibre communication
   • Satellite communication: VSAT, GPS

5. Microwave Engineering

   • Microwave transmission lines & waveguides
   • Devices: klystron, magnetron, travelling‑wave tube
   • Antennas: horn, parabolic dish, patch
   • MASER, LASER applications in telecom
   • Radio wave propagation: ground, sky, space waves

6. Computer Engineering

   • Number systems & data representation
   • Computer organization & architecture
   • Memory hierarchy: cache, RAM, virtual memory
   • I/O systems, interfacing, basics of programming
   • Operating system concepts

7. Microprocessors

   • Architecture of 8085 & 8086 microprocessors
   • Instruction set, addressing modes
   • Interrupts, peripheral interfacing
   • Microcontroller applications in telecom

Section III – General Ability Test

• English Language: Reading comprehension, grammar, vocabulary, sentence correction, basic writing.
• Current Affairs: National & international events, government schemes, science & technology updates.
• General Knowledge: Indian history, geography, polity, economy, Constitution.
• Everyday Science: Basic scientific principles, environmental science.
• Telecom Awareness: Indian telecom sector overview, BSNL policies, recent developments.

How to Download Syllabus

1. Open the official BSNL examination portal.
2. Navigate to the “Examination Notification” or “Syllabus” section.
3. Locate the link titled “Download Syllabus”.
4. Click the link to open the PDF file.
5. Save the PDF to your device for offline study.

Frequently Asked Questions

Q1. What is the total number of marks for the BSNL JTO 2026 exam?
A: The exam carries 480 marks in total, with each correct answer awarding 4 marks.

Q2. How many sections are there in the BSNL JTO CBT?
A: There are three sections – Engineering Stream I, Engineering Stream II, and General Ability Test.

Q3. Is there a penalty for wrong answers?
A: Yes. ‑1 mark is deducted for every incorrect response.

Q4. What is the duration of the exam?
A: The entire CBT must be completed within 3 hours; there is no separate time limit per section.

Q5. What are the minimum qualifying marks for different categories?
A:

• Unreserved & OBC (Creamy Layer): Minimum 40 % per section and 50 % overall.
• SC / ST / OBC (Non‑Creamy Layer) / PwBD / EWS: Minimum 35 % per section and 45 % overall.