Basic sections in the BSNL TTA Exam are General Ability, Basic Engineering and Specialization. General Ability deals with Basic English, Current Affairs and General Knowledge while Basic Engineering includes Engineering Mathematics, Engineering Physics and Basic Electronics. Specialization includes core engineering subjects like Control Systems, Micro Processors etc.

Main topics covered in BSNL TTA Exam

General Ability

Basic Engineering

• Applied Mathematics
• Basic Electricity
• Digital Techniques
• Applied Physics
• Electronics Devices and Circuits

Specialization

• Electrical
• Network, Filters and Transmission Lines
• Control Systems
• Computers
• Communication
• Instruments and Measurements
• Microprocessors

Detailed Syllabus of BSNL TTA Exam

General Ability

• Antonyms and Synonyms
• Multiple choice exercises
• General Knowledge
• Current Affairs

Applied Mathematics

• Complex Number
• Co-ordinate Geometry
• Differential Calculus
• Differential equation of second order’ Fourier series
• Laplace Transform
• Matric and Determinant
• Partial Differentiation
• Vector Algebra

Applied Physics

• Acoustics
• Atomic Structure and Energy levels
• Laser and its Applications
• Light
• Measurement – Units and Dimensions
• Ultrasonics
• Waves

Basic Electricity

• Basic Magnetism
• Cells and Batteries
• Concept of alternating voltage and current
• Concept of capacitance and capacitors
• Concept of potential difference
• Coulomb’s law
• Current laws and their applications in simple DE circuits
• Electric field
• Electro Magnetism
• Electromagnetic induction
• Electrostatics
• Gauss’s Theorem
• Kirchoff’s voltage
• Norton’s theorem and their applications
• Ohm’s law
• Power and energy
• Thevenin’s theorem
• Voltage land Current Sources

Electronics Devices and Circuits

• Active and passive components
• Bipolar Transistor and their circuits
• Block diagram of I.C timer (Such as 555) and its works
• Classification of materials into conductor, semiconductor and insulator
• Conventional representation of electric and electronic circuit elements
• Feedback in Amplifier
• Field effect transistor
• MOSFET circuit applications
• Multi vibrator Circuits
• Multistage Transistor Amplifier
• Operational Amplifier
• Opto Electronics Devices and their applications
• Regulated Power Supply
• Semi conductor Physics
• Semiconductor Diode
• Single stage transistor amplifier
• Sinusoidal Oscillator
• Thyristors and UJJ
• Tiem base Circuits
• Transistor Audio Power Amplifier
• Transistor Biasing and Stabilization of operating point
• Tuned Voltage Amplifiers
• Various types of relays, switches and connectors
• Wave shaping and switching circuits

Digital Techniques

• A/D and D/A converters
• Applications and advantages of digital systems
• Arithmetic Circuits
• Codes and parity
• Decoders
• Display Devices and Associated Circuits
• Latches and Flip Flops; Counters
• Logic Gates
• Logic Simplification
• Memories
• Multiplexers and De-multiplexers
• Number system (binary and hexadecimal)
• Shift Register

Electrical

• Inverters
• 3 phase v/s single phase supply
• Battery charges
• Construction and principles of works of various types of electrical measuring instruments
• Contractor control circuits
• Motor and generator AC& DC
• Phase controlled rectifiers, choppers, inverters, dual converters and cyclo converters
• Power electronics application in control of drivers, refrigeration and air conditioning
• Power factor and their measurements
• Protection devices & circuits
• Rectifiers
• Relation between phase & line voltage
• Relays
• Star Delta connections
• Starters
• Switchgear
• Transformers

Communication

• Brief idea of ISDN interfaces
• Carrier Telephony – Features of carrier telephone system
• Characteristics / working of data transmission circuits, UART and USART
• Digital Modulation Techniques – ASK, ICW, FSK, PSK
• Error detection and correction techniques
• Introduction of Basic block diagram of digital and data communication systems
• Local Area Network
• Microwave Communication Systems-Block diagram and working
• Microwave Engineering
• Modems
• Modulation and demodulation -AM, FM and PM modulators / demodulator
• Multiplexing
• Principles and applications of PCM
• Principles of microwave communication link
• Protocols and their functions
• Pulse modulation – TDM, PPM, PWM, PAM

Network, Filters and Transmission Lines

• Attenuators
• Bandwidth consideration of a transmission line
• Characteristic impedance of Line
• Concept of reflection and standing waves on and transmission line
• Filters
• Principle of impedance matching
• Transmission Line equation
• Transmission Lines and their applications
• Two port network

Instruments and Measurements

• Block diagram explanation of basic CRO and a triggered sweep oscilloscope, front panel controls
• Flow measuring devices
• Force and torque measuring devices
• Impedance Bridges and Q-Meters
• Measurement of displacement & strain
• Power control devices and circuits
• Pressure measuring devices
• Principles of voltage, current and resistance measurements
• Principles of working and specifications of logic probes, signature analyzer and logic analyzer, signal generator, distortion factor meter, spectrum analyzer
• Specifications of instruments -accuracy, precision, sensitivity and resolution range Errors in measurement and loading effect,
• Transducers
• Types of AC milli-voltmeters – Amplifier rectifier and rectifier amplifier

Control Systems

• Basic elements of control system, open and closed loop system and concepts of feedback
• Block diagram of control system
• Bode plot
• Gain margin and phase margin
• Linearity concepts
• Polar-plot
• Root locus technique
• Routh Hurwitz criterion
• Self regulating and non self regulating control systems.
• Single feedback configuration
• Stability Analysis – Characteristic equation, Routh’s table, Nyquist criterion, relative stability, phase margin and gain margin
• Time lag hysterics
• Time response of systems
• Transfer function of simple control components

Microprocessors

• Architecture of a Microprocessor
• Brief idea of M/C & assembly languages
• Concept of Instruction set
• Concept of interrupt
• Date transfer techniques – sync data transfer, async data transfer, interrupt driven data transfer, DMA, serial output data, serial input data
• Instruction format and addressing mode
• Machines & Mnemonic codes
• Memories and I/O Interfacing
• Programming exercise in assembly language
• Typical organization of a microcomputer system & functions of its various blocks

Computers

• Basic concepts of Database Management System
• Communication protocols – X.25.TCP/IP
• Computer and its working
• Control unit design
• Data communication principles
• DBMS based on relational model
• Elements of a high level programming language like PASCAL and C
• Familiarization with DOS and Windows –concept of file, directory, folder, Number Systems, data representation
• Functions of data link layer and network layer
• Fundamentals of computer architecture
• I/O System Organization
• Memory organization
• Micro processor architecture, instruction set and simple assembly level programming
• Microprocessor based system design: typical examples
• Network principles
• Networking components
• OSI model
• Personal computers and their typical uses
• Processor design
• Types and working principles of modems
• Types of computers
• Use of basic data structures

Candidates need to attempt only two sections according to their engineering specialization. Therefore, it is not required to study all the sections under specialization.