Friday, 10 August 2012

HIGHER SECONDARY SCHOOL TEACHER (ELECTRONICS)

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1.   Semiconductor Devices and OP-Amps
Power  Diodes,  BJTs,  Power  MOSFETs,  Thyristors,  TRIAC,  Insulated  Gate  Bipolar
Transistors: Structure, Characteristics, Negative Feedback, General Requirements of Feedback
Circuits, Effect of Feedback on Amplifier, Performance, The four feedback topologies, effect of
feedback connection on amplifier port resistance and stability, the op-amp architecture, linear
op-amp circuits: non-inverting, inverting, difference, instrumentation, summation, integration,
differentiation amplifiers, non linear op-amp circuits.

   2.   Circuit Analysis
Kirchoff’s Law, review of network theorems, substitution, super position reciprocity,
maximum  power  transfer,  Thevenins,  Nortons,  Transients  in  linear  circuits,  signal
representation, characteristics of signals – unit step function, impulse and ramp function, non
sinusoidal signals, Fourier series and transforms, Laplace transforms, Laplace transforms of
important signal wave forms.

   3.   Digital Electronics and Logic Design
Number systems and conversion, binary codes, Boolean algebra, basic operations, truth
tables, simplification theorems, laws and theorems of Boolean algebra, EX-OR and equivalence,
Karnaugh maps, minimum expressions using essential prime implicates, Flip-Flops : S-R trigger,
J-K, Clocked J-K and D-flip-flops, design of binary counter, other sequences, counter design
using flip flops

   4.   Electromagnetics and Antennas
Review  of  Maxwell’s  equations,  Faradays,   Gauss’s  and  Ampere’s  laws,  boundary
conditions, power flow and pointing vector, propagation of uniform plane wave – Uniform plane
waves in lousy media, conductors and di-electronics, skin depth, group velocity, normal and
oblique incidence of plane waves on plane boundaries, oblique incidence, loss less media and
perfect conductors, equations governing potential functions, Lap laces, Poisson equations and
solutions, TE, TM and TEM waves, Antennas, Dipoles and monopoles, radiation pattern, gain,
receiving cross section, beam width, minor lobes, radiation resistance and polarization.  

5.Microprocessors and Applications
Organisation of 8-bit processors, external organisation of memory, CPU timing and
Control Unit, Register Organisation, programming the 8085, Addressing modes – Instruction
sets and timing diagrams, Assembly language programming, Stack and subroutine concepts,
memory  interfacing,  data  transfer  schemes,  DMA  transfer,  Address  partitioning  schemes,
Interfacing I/O devices, Interrupts, General purpose programmable peripheral devices, ADCs,
successive  approximation,  integrating  type,  flash  type,  8086  internal  architecture  registers,
memory address space, segment registers, memory segmentation, stack, I/O space, addressing
modes, instruction set and assembly language programming.

   6.   Communication Systems
Modulation techniques: Amplitude Modulation and de modulation, SSB, DSB, Vestigial
sideband modulation, frequency division multiplexing, Angle modulation, Frequency Modulation
and demodulation. Phase locked loop, limiting of FM waves, stereophonic FM broadcasting,
Television:  Modulation  techniques,  TV  standards,  B/W  transmission  and  reception,  Colour
transmission and reception, Digital transmission: Pulse Code Modulation, Sampling, quantising,
coding,  Differential  Pulses  –  Code  Modulation,  Delta  modulation,  Digital  Modulation
Techniques: ASK, FSK, PSK and QPSK.

   7.   Signal Processing
Discrete – time signals and systems : properties of discrete – time systems- convolution
Difference Equation Representation of Discrete Time systems.  The Z transform-properties of Z
transform-inverse  Z  transform,  Discrete  Fourier  Transform  –  properties-block  convolution,
Decimation-in-time FFT  algorithm – Decimation-in-Frequency FFT  algorithm, FIR and IIR
filters.

   8.   Control Systems
Basic  Control  System  components:  Block  diagram  description-reduction  of  block
diagram-open loop and closed loop systems-signal flow graphs and their use in determining
transfer  function,  properties  of  systems:  Linearity,  time  invariance,  stability  and  causality:
special properties of Linear Time Invariant (LTI) systems: Transfer function, Impulse response,
transient  response  of  first  order  and  second  order  systems-Error  Constants-Generalized
Definition of Error  Coefficients,  concept  of stability:  Poles,  zeros  and  their  significance in
stability analysis, tools and techniques for LTI Control System Analysis.

9. Microwave devices and Radar Systems
Velocity  modulation,  basic  principles  of  two  cavity,  Klystron  and  Reflex  Klystron,
Microwave  solid  state  devices,  transferred  electron  devices,  Gunn  effect,  IMPATT  diode,
TRAPPAT diode, Microwave Ferrite devices and measurement: Faraday rotation in Ferrites,
isolator, circulator, resonant cavities, fundamentals of radar systems : radar range equation,
radar frequencies, pulse considerations, minimum detectable signal, receiver noise, integration
of radar pulses, pulse repetition frequencies.10. Computer Networks
Introduction to Network structure, topology and standards, ISO reference model for open
system interconnection, Functions and design issues of the OSI layers, Physical layer concepts,
Data Transfer modes: Synchronous and Asynchronous, Speed  Matching  concept, Multiplexers,
Statistical   Multiplexers,  concentrators,  modems  and  switching,  multiple  access  networks,
connection  management,  MAC  networks,  MAC  protocols,  Bus  and  Ring  Architectures,
CSMA/CD, slotted ring and token passing, LAN protocols, IEEE 802 standardization in OSI
model:   IEEE  802.2,  802.3,  802.4  and  802.5  standards.  IEEE  802.11  WLAN  standards,
Principles of ATM.
NOTE: - It may be noted that apart from the topics detailed
above,  questions  from  other  topics  prescribed  for  the
educational  qualification  of  the  post  may  appear  in  the
question paper. There is no undertaking that all the topics
above may be covered in the question paper.

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