As you requires here I am giving you Cut Off for Bharat Sanchar Nigam Limited (BSNL) Telecom Technical Assistant TTA (JE) exam 2015.

BSNL TTA(JE) 2015 Cut-off Marks:

Sectional and Over All Cut-off Marks

Category S-1 S-2 S-3
General 6/20 = 30% 27/90 = 30% 27/90 = 30%
OBC 4/20 = 20% 18/90 = 20% 18/90 = 20%
SC 4/20 = 20% 18/90 = 20% 18/90 = 20%
ST 4/20 = 20% 18/90 = 20% 18/90 = 20%

Category Cut off Marks
General 80/200 = 40%
OBC 66/200 = 33%
SC 66/200 = 33%
ST 66/200 = 33%

BSNL TTA exam syllabus :

Part – I
General Ability Test – 20 Marks
General English
Current events
General knowledge


Part-II
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.