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Punjab Public Service Commission (PPSC)

Syllabus




New Optional Subjects


Electronics Engineering

Max. Marks : 100

Time : 3 Hours

The paper will consist of two parts; Section-A and Section-B. The details are as under :

Section - A will have 14 short answer type questions, consisting of two marks each. These questions will be covered from the entire syllabus.

Introduction
Functions
Composition
Examination
Eligibility
Plan of Examination
Syllabus
Contact
Section - B will have FOUR groups, Each group will consist of two questions having 18 marks each.

Note : The candidates are required to attempt section-A and one question from each group of section-B.




Group I
  1. Electrical Circuits : Theory and Applications - Circuit components, network graphs, KCL, KVL, circuit analysis methods: nodal analysis, mesh analysis, basic network theorems and applications, transient analysis: RL, RC and RLC circuits, sinusoidal steady state analysis, resonant circuits and applications, coupled circuits and applications, balanced 3-phase circuits. Two-port networks, driving point and transfer functions, poles and zeros of network functions. Elements of network synthesis. Filter-theory: design and applications. Active filters. Circuit simulation - Input formats, methods of education formulation, solution of equations, output formats, SPICE.

    E.M. Theory - Maxwell’s equations, wave propagation in bounded media. Boundary conditions, reflection and refraction of plane waves. Transmission line - Distributed parameter circuits, Traveling and standing waves, impedance matching, Smith chart. Waveguides - parallel plane guide, TE, TM and TEM waves, rectangular and cylindrical wave guides, resonators, Planar transmission lines, stripline, microstripline.


  2. Analog Electronics : Characteristics and equivalent circuits (large and small-signal) of Diode, BJT, JFET and MOSFET. Diode, circuits clipping, clamping, rectifier. Biasing and bias stability. FET amplifiers. Current mirror, Amplifiers: single and multi-stage, differential, operational, feedback and power. Analysis of amplifiers, frequency-response of amplifiers. OPAMP circuits. Filters, sinusoidal oscillators: criterion for oscillation, single transistor and OPAMP configurations. Function generators and wave-shaping circuits. Power Supplies.


  3. Electronic Engineering Materials : Electronic behaviours of materials: conductivity, free-electrons and band theory, intrinsic and extrinsic semiconductor, p-n junction, solar cells, super-conductivity. Dielectric behaviors of materials, polarization phenomena, piezo-electric phenomena. Magnetic materials, behaviour and application. Photonic materials: refractive index, absorption and emission of light, optical fibres, lasers and opto- electronic materials

Top

Group II
  1. Digital Electronics : Boolean algebra, minimisation of Boolean functions, logic gates, digital IC families (DTL, TTL, ECL, MOS, CMOS). Combinational circuits: arithmetic circuits code converters, multiplexers and decoders Sequential circuits: latches and flip-flops, counters and shift-registers. Comparators, timers, multivibrators. Sample and hold circuits, ADC’s and DACs. Semiconductor memories. Logic implementation using programmable devices (ROM, PLA, FPGA).


  2. Power Electronics and Electric Drives : Semiconductor power devices: diode, transistor, thyristor, triac, GTO and MOSFET-static characteristics and principles of operation, triggering circuits, phase control rectifiers, bridge converters, fully-controlled and half-controlled, principles of thyristor choppers and inverters, basic concepts of speed control of dc and a.c. motor drives. Applications of variable-speed drives.


  3. Microprocessors and microcomputers : 8-bit microprocessor: architecture, CPU, module design, memory interfacing, I/O, Peripheral controllers, Multiprocessing. IBMPC architecture: overview, introduction to DoS Advanced microprocessors.


  4. IC Technology : Overview of IC Technology, Unit-steps used in IC fabrication: wafer cleaning, photo-lithography, wet and dry etching, oxidation, diffusion, ion-implantation, CVD and LPCVD techniques for deposition of polysilicon, silicon, silicon-nitride and silicon dioxide: metallisation and passivation.

Top

Group III
  1. Signals & Systems : Representation of continuous-time and discrete-time signals & systems; LTI systems; convolution, impulse response, time domain analysis of LTI systems based on convolution and differential/difference equations. Fourier transform, Laplace transform, Z-transform, Transfer function. Sampling and recovery of signals DFT, EFT processing of analog signals through discrete-time systems.


  2. Analog Communication : Random variables: continuous, discrete, probability, probability functions. Statistical averages, probability models, Random signals and noise, white noise, noise equivalent bandwidth, signal transmission with noise, signal to noise ratio. Linear CW modulation: Amplitude modulation: DSB, DSB-SC and SSB. Modulators and Demodulators, Phase and frequency modulation: PM & FM signals, narrowband FM, generation & detection of FM and PM De-emphasis, Pre-emphasis. CW modulation system: Super heterodyne receivers, AM receivers, communication receivers, FM receivers, phase locked loop, SSB receiver, Signal to noise ratio calculation for AM and FM receivers.


  3. Control Systems : Elements of control systems, block-diagram representation, open-loop & closed-loop systems, principle and applications of feedback. LTI systems: time-domain and transform-domain analysis. Stability: Routh Hurwitz criterion, root-loci, Nyquist’s criterion, Bode-plots, Design of lead-lad compensators. Proportional, PI, PID controllers. State-variable representation and analysis of control systems. Principles of discrete-control systems.


  4. Measurement and Instrumentation : Error analysis, measurement of current, voltage, power, energy, power-factor, resistance, inductance, capacitance and frequency, bridge measurements. Electronic measuring instruments, multimeter, CRO, digital voltmeter, frequency counter, Q-meter, spectrum-analyser, distortion-meter. Transducers: thermocouple, thermistor, LVDT, strain-gauge, piezo-electric crystal. Use of transducers in measurements of non-electrical quantities. Data-acquisition systems.

Top

Group IV
  1. Microwaves and Antenna : Electromagnetic radiation, Propagation of waves: ground waves, sky wave, space wave, tropospheric scatter propagation. Extraterrestrial communications. Antenna: Various types, gain, resistance, bandwidth, beam-width and polarization, effect of ground. Antenna coupling high frequency antennas; microwave antennas; special purpose antennas. Microwave Services: Klystron, magnetron, TWT, gun diodes, IMPATT, Bipolar and EFTs, Microwave integrated circuits. Microwave measurements.


  2. Digital Communication : Pulse code modulation (PCM), differential pulse code modulation (DPCM), delta modulation (DM), Digital modulation and demodulation schemes: amplitude, phase and frequency keying schemes (ASK, PSK, FSK). Error control coding: error detection and correction, linear block codes, convolution codes. Information measure and source coding. Data networks, 7-layer architecture.


  3. Satellite communication, Radar and TV : Satellite Communication - General overview and technical characteristics, earth station equipment, satellite link design, CNR of Satellite system. Radar - Basic principles, Pulsed systems: CW Doppler radar, FMCW radar, Phase array radar. Television Systems - Television systems and standards, Black and White and Colour-TV transmission and receiver systems.


  4. Fibre Optic System : Multiplexing - Time division multiplexing, Frequency Division multiplexing. Optical properties of materials - Refractive index absorption and emission of light, optical fibres, lasers and optoelectronic materials Fibre optic links.

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