BHARAT SANCHAR NIGAM LIMITED
SCHEME & SYLLABUS
TTA DIRECT RECRUITMENT EXAMINATION
| SECTION | TOPIC | MARKS ALLOTED |
| PART-I | GENERAL ABILITY TEST | 20 |
| PART-II | BASIC ENGINEERING | 90 |
| PART-III | SPECIALIZATION | 90 |
Note1.The candidate is required to obtain minimum qualifying marks in each these parts as may be prescribed by the BSNL
PART-I: GENERAL ABILITY TEST - 20 MARKS
The candidate’s comprehension and understanding of General English shall be tested through simple exercise such as provision of antonyms and synonyms, fill in the blanks and multiple-choice exercise etc.This shall also include questions on current events, general knowledge and such matters of everyday observation and experiences as may be expected of Diploma holder.
PART-II: BASIC ENGINEERING - 90 MARKS
1.Applied mathematics:- Co-ordinate Geometry: Vector Algebra;Matrix and Determinant: Differential Calculus; Integral Calculus: Differential equation of second order: Fourier series; Laplace Transform; Complex Number, Partial Differentiation.
- Measurement-Units and Dimension; Waves, Acoustics, Ultrasonic; Light; Laser and its Application, Atomic Structure and Energy Levels.
- Electrostatics, Coulomb’s law, Electric field,Gauss’s theorem, concept of potential difference; concept of capacitance and capacitors; Ohm’s law power and energy, Kirchoff’s voltage, current laws and their applications in simple DC circuits, Basic Magnetism; Electro Magnetism; Electromagnetic Induction; Concept of alternating voltage & current; Cells and Batteries; Voltage and Current Sources; Thevenin’s theorem, Norton’s theorem and their applications
- 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 circuits elements.Active and passive components; semi conductor Physics,Semiconductor Diode; Bipolar transistor & their circuits; Transistor Biasing Stabilization of operating point; Single stage transistor amplifier,field effect transistor, Mosfet circuits applications.M ultistage 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 switiching circuits.B lock diagram of I.C. Timer(such as 555) and its working,Motivation circuits;Time Base Circuits ,Thyristory and UJT;Regulated Power Supply.
- Applications and advantages of digital systems;number system (binary and hexadecimal); Logic Gates; Logic Simplification,Codes and Parity; Arithmetic Circuits; Decoders, Display Devices & Associated Circuits Multiplexers and De-multiplexers; Latches and Flip Flops; Counters; Shift Registers; Memories; A/D and D/A converters.
PART-III: SPECIALIZATION -90 MARKS
1. Electrical:- 3 phases vs. single-phase supply, Star Delta connections, relation between phase & line 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, circuits breaker, generator protection, transformer protection, feeder & lightening protection, feeder & bus bar protection, lightening arrestor, earthing, voltage stabilizer & regulators, power control devices &circuits, phase controlled rectifiers, inverters, choppers dual converters, cyclo-converters power electronics application in control of drivers, refrigeration & air conditioning.
- Modulation and demodulation- principles and operation 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 areas Network,Carrier Telephony – Features of carrier telephone system. Microwave Engineering; Mecrowave Devices; Wave- guides; Microwave Components; Microwave Antennas; Microwave Communication Systems- Block diagram & working principal’s of microwave communication link.
- Two port network,Attenuators,Filters,Transmission Lines & their applications, characteristic impedence of line,concept of refection and standing waves on a transmission line,Transmission line equation,Principles of impedance matching, Bandwidth consideration of a transmission line.
- Specification of Instruments-accuracy,precision,sensitivity,resolution range,Errors in measurements & loading effect,principles of voltage,current & resistance measurements, Transducers,measurement of displacement & strain , forces & torque measuring devices, pressure measuring devices,flow measuring devices,power control devices and circuits.Types of AC milli voltmeters-Amplifier rectifier and rectifier amplifier,Block diagram explanation of a basic CRO & a triggered sweep oscilloscope,front panel controls,impedance Bridges and Q-Meters.
- Principles of working and specifications of logic probes,signature analyzer and logic analyzer,signal generator, distortion factor meters,spectrum analyzer.
- Basic elements of control system,open and closed loop system, concept of feedback, Block diagram of control system,Time lag,hysterisis, linearity concepts,Self-regulating and non-self regulating control systems,Transfer function of simple control components, single feedback configuration. Time response of systems.
- Stability Analysis Characteristics equation,Routh’s table,Nyquist criterion ,Relative stability,phase margin and gain margin.
- Routh Hurwitz critierion,root locus techniques,Bode plot, Power plot ,Gain margin and phase margin.
- Typical organization of a microcomputer system & functions of its various blocks, Architecture of a Microprocessors, Memories and I/O interfacing ,Brief idea of M/C assembly languages ,Machines & Mnemonic codes, Instruction format and Addressing mode,concept of instruction set ,programming excercises in assembly language ,concept of interrupt, Data transfer techniques-sync data transfer, interrupt driven data transfer,DMA ,serial out put data, serial input data.
- Computer and its working,types of computers,familiarization with DOS and Windows concept of file,directory,folder,Number systems,Data representation,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,Microprocessors- microprocessor architecture,instruction set and simple assembly level programming,Microprocessors 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 componets, communications protocols a-X.25,TCP/IP.
- Database Management system-Basic concepts, entity relationship model, relational model, DBMS based on relational model
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