BSNL TTA/JE exam syllabus, cut off marks, merit list 2016

BSNL TTA exam Overview

BSNL has recently issued notification for recruitment of Junior Engineers post and syllabus, cut off marks of the same is provided in this post. This is the first time when it is conducting All India Online exam for TTA the post. Earlier it was conducted at state level. Now onwards it will be a all India examination.

BSNL TTA Job provides best work opportunity for Diploma Engineer students of Electronic, Telecommunication, Electrical, Radio, Computers, Instrumentation and Information Technology. The examination Syllabus is common for all streams and divided in three parts which are General ability Test, Basic Engineering and Specialization. BSNL TTA exams detailed syllabus shown below

Part – I

General Ability Test – 20 Marks

Candidate’s comprehension and understanding of general English is tested through simple exercises such as provision of antonyms and synonyms, this shall also include questions on current events and general knowledge which can be observed by a diploma holder.

BSNL Junior Engineer exam syllabus cut off marks merit list


Basic Engineering – 90 Marks

Applied Mathematics:- Co-ordinate geometry, Vector algebra, matrix and determinants, Differential calculus, integral calculus, Differential equations of second order, Fourier series, laplace transform, partial differentiation.

Applied Physics: Measurement-units and dimensions, waves Acoustics, Ultrasonic, LASER and its applications, Atomic structure and its energy levels.

Basic electricity :- Electrostatics, Coulomb’s law, Electric field, Gauss theorem, Concept of potential difference, concept of capacitance and capacitor, Ohm’s law, power and energy, Kirchhoff’s laws and application, basics of magnetization, Electromagnetic Induction, AC current and voltage, Voltage and current sources Thevenin and Norton theorems and their applications.

Electronic Devices and circuits:- Classification of materials into conductor, semi conductor, Insulator etc. electrical properties, magnetic materials, various types of relays, switches and connectors, Conventional representation of electric and electronic circuit elements. Active and passive components; Semiconductor Physics; Semiconductor Diode; Bipolar Transistor & their circuits; Transistor Biasing & Stabilization of operating point; Single stage transistor amplifier field effect transistor, Mosfet circuit applications, Multistage Transistor Amplifier; Transistor Audio Power Amplifiers; Feedback in Amplifier; Sinusoidal Oscillators; tuned voltage Amplifiers; Opto Electronics Devices and their applications; Operational Amplifier; wave shaping and switching circuits. Block diagram of I.C. timer (such as 555) and its working; Multi vibrator circuits; Time base circuits; Thyristors and UJT; Regulated Power supply.

Digital Techniques:- Applications and advantages of digital systems; number system(binary and hexadecimal); Logic Gates; Logic simplifications; Codes and Parity; Arithmetic circuits; Decoders, Display Devices and Associated Circuits; Multiplexers and De-Multiplexers; Latches and Flip Flops; counters; Shift Register; Memories; A/D and D/A converters.

Specialization – 90 Marks

Electrical:- 3 phase vs single phase supply, Star Delta connections, relation between phase & tine voltage, power factor and their measurements; construction and principles of working of various types of electrical measuring instruments, all types of motor and generator AC & DC transformers, starters, rectifiers, Inverters, battery charges, batteries, servo and stepper motors, contactor control circuits, switchgear, relays, protection devices & schemes, substation, protective relaying, circuit breaker, generator protection, transformer protection, feeder & lightening protection, feeder & bus bar protection, lightening arrestor, earthing, voltage stabilizer 8 regulators, power control devices 8 circuits, phase controlled rectifiers, inverters, choppers, dual converters, cyclo converters; power electronics application in control of drivers refrigeration 8 air conditioning.

Communication:- Modulation and demodulation- Principles and operator of various types of AM, FM and PM modulators / demodulators; pulse modulation- TDM, PAM, PPM, PWM: Multiplexing, principles and applications of PCM. Introduction of Basic block diagram of digital and data communication systems; coding error detection and correction techniques; Digital Modulation Techniques-ASK, ICW, FSK, PSK; Characteristics / working of data transmission circuits; UART: USART: Modems; Protocols and their functions, brief idea of ISDN interfaces, local area Network; Carrier Telephony- Features of carrier telephone system. Microwave Engineering: Microwave Devices; Waveguides; Microwave Components; Microwave antennas; Microwave communications Systems- Block diagram 7 working principles of microwave communications link.

Networks, Filters and Transmission lines:- Two points network; Attenuators; Filters; Transmission Lines and their applications; characteristic impedance of line; concept of reflection and standing waves on a transmission line; Transmission line equation; Principle of impedance matching; Bandwidth consideration of a transmission fine.

Instruments and measurements:- Specifications of Instruments- accuracy precision, sensitivity resolution range, Errors in measurement and loading effect; Principles of voltage, current and resistance measurements; Transducers, measurement of displacement a strain, force & torque measuring devices, pressure measuring devices, flow measuring devices power control devices & circuits. Types of AC mill-voltmeters-Amplifier rectifier and rectifier amplifier Block diagram explanation of a basic CRO and a triggered sweep oscilloscope, front panel controls; Impedance Bridges and Q-Meters; Principles of working and specifications of logic probes, signal analyzer and logic analyzer, signal generator, distortion factor meter, spectrum analyzer.

Control systems:- Basic elements of control system, open and closed loop system concepts of feedback, Block diagram of control system. Time lag, hysteresis linearity concepts; Self regulating and non self regulating control systems. Transfer functions of simple control components, single feedback configuration. Time response of systems; Stability Analysis: Characteristic equation Routh’s table Nyquist Criterion, Relative stability, phase margin and gain margin. Routh Hurwitz criterion, Root Locus technique, Bode Plot, Polar plot, gain margin and phase margin

Microprocessors:- Typical organization of a microcomputer system & functions of its various block; Architecture of a Microprocessor; Memories and I/o interfacing; Brief idea of M/s assembly languages, machines & Mnemonic codes; Instructions format and Addressing mo0de; concept of Instruction set; programming exercises in assembly language; concept of interrupt; Data transfer techniques- sync data transfer, async data transfer interrupt driven data transfer, DMA serial output data, serial input data

Computers:- Computer and its working, types of computers, familiarization with DOS and windows-concept of file, directory, folder, Number systems; Data Communication. Programming Elements of a high level programming language, PASCAL, C, USE OF BASIC DATA STRUCTURES Fundamentals of computer architecture, Processor design, Control unit design; Memory organization. I/O system Organization, Microprocessor-microprocessor architecture; Instruction set and simple assembly level programming. Microprocessor based system design; typical examples. Personal computers and their typical uses, data communication principles, types and working principles of modems, Network principles, OSI model, functions of data link layer and network layer, networking components; communications protocols-X-25, TCP/IP Database Management System-basic concepts, entity relationship model, relational model, DBMS based on relational model.

BSNL JE Cut of Marks

The minimum qualifying marks for OC (General category) candidates are fixed at 30% for each section and total or aggregate marks should be at least 40% to qualify the examination. Similarly sectional cut off marks are fixed 20% for OBC/SC/ST category candidates and aggregate marks should be at least 33% to qualify the exam.

TTA Merit list

There will not be any All India merit list. Merit list will be prepared BSNL Circle/State wise. Hence actual cut off marks may different for all states.

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All the best to the applicants appearing in exam.


  1. i’m an ECE graduate. do i have to study every subject mentioned in specialization exam like electrical, comm. , networks, instru. etc. ? ? each and every subject???

  2. Sir, am an electronics and communication student. Please tell me what are the subjects have to study in specialization section? Is the specialization paper is common for all branches??

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