Paper-I




Electrical Circuits-Theory and Applications Circuit components; network graphs; KCL, KVL; circuit analysis methods : nodalanalysis, mesh analysis; basic network theorems and applications; transientanalysis : RL, RC and RLC circuits; sinusoidal steady state analysis; resonantcircuits and applications; coupled circuits and applications; balanced 3-phasecircuits. Two-port networks, driving point and transfer functions; poles and zerosof network functions. Elements of networks synthesis. Filter-theory : design andapplications. Active filters. Circuit simulation : Input formats; mathematicalmodelling; solution of equations; output formats; SPICE.

Signals & SystemsRepresentation of continuous-time and discrete-time signals; LTI systems;convolution; impulse response; time-domain analysis of LTI systems based onconvolution and differential/difference equations. Fourier transform, Laplace transform, Z-transform, Transfer function. Sampling and recovery of signals DFT,FFT Processing of analog signals through discrete-time systems.

E.M. TheoryMaxwell's equations, wave propagation in bounded media. Boundary conditions,reflection and refraction of plane waves. Transmission line : Distributedparameter circuits, travelling and standing waves, impedance matching, Smithchart. Waveguides : parallel plane guide, TE, TM and TEM waves, rectangularand cylindrical wave guides, resonators. Planar transmission lines; stripline,microstripline.

Analog ElectronicsCharacteristics and equivalent circuits (large and small-signal) of Diode, BJT,JFET and MOSFET. Diode circuits : clipping, clamping, rectifier. Biasing andbias stability. FET amplifiers. Current mirror, Amplifiers : single and multi-stage,differential, operational, feedback and power. Analysis of amplifiers; frequencyresponseof amplifiers. OPAMP circuits. Filters; sinusoidal oscillators : criterionfor oscillation; single-transistor and OPAMP configurations for oscillators.Function generators and wave-shaping circuits. Power supplies.

Digital ElectronicsBoolean algebra; minimisation of Boolean functions; logic gates; digital ICfamilies (DTL, TTL, ECL, MOS, CMOS). Combinational circuits : arithmeticcircuits, code converters, multiplexers and decoders. Sequential circuits : latchesand flip-flops, counters and shift-registers. Comparators, timers, multivibrators.Sample and hold circuits, ADCs and DACs. Semiconductor memories.Programmable logic controller.

Energy ConversionPrinciples of electromechanical energy conversion : Torque and emf in rotatingmachines. DC machines : characteristics and performance analysis; starting andspeed control of motors. Transformers : principles of operation and analysis;regulation, efficiency; 3-phase transformers, 3-phase induction machines :Characteristics, speed control. 3-phase synchronous machines : Characteristics,parallel operations. Reactive power control. Special machines : stepper motors,brushless dc motors, permanent magnet motors single-phase motors; UniversalMotors.

Power Electronics and Electric Drives :Semiconductor power devices : diode, transistor, thyristor, triac, GTO , MOSFETand IGBT; static characteristics and principles of operation; triggering circuits;bridge converters : fully-controlled and half-controlled; principles of choppersand inverters; basic concepts of speed control of dc and ac motor drives,applications of variable-speed drives.

Analog CommunicationRandom variables : continuous, discrete; probability, probability functions.Statististical averages; probability models; Random signals and noise : whitenoise, noise equivalent bandwidth; signal transmission with noise; signal to noiseratio. Linear CW modulation : Amplitude modulation : DSB, DSB-SC and SSB.Modulators and Demodulators; Phase and Frequency modulation : PM & FMsignals; narrowband FM; generation & detection of FM and PM, Deemphasis,Preemphasis. CW modulation system : Superhetrodyne receivers, AM receivers,communication receivers, FM receivers, phase locked loop, SSB receiver, Signalto noise ratio calculation for AM and FM receivers.

Microwaves and AntennaElectromagnetic radiation, Propagation of waves : ground waves, sky wave, spacewave, tropospheric scatter propagation. Extraterrestrial communications.Antenna : Various types, gain, resistance, band-width, beamwidth andpolarization, effect of ground. Antenna coupling; high frequency antennas;microwave antennas; special purpose antennas. Microwave Services : Klystron,magnetron, TWT, gun diodes, Impatt, Bipolar and FETs, Microwave integratedcircuits. Microwave measurements.

Paper-II


Control SystemsElements of control systems; block-diagram representation; open-loop & closed loopsystems; principles and applications of feed-back. LTI systems : time-domainand frequency-domain analysis. Stability : Routh Hurwitz criterion, rootloci, Nyquist's criterion, Bode-plots, Design of lead-lag compensators. Proportional, PI, PID controllers. State-variable method and application Principles of discrete-control systems.

Electrical Engineering Materials Electrical/electronic behaviour of materials : conductivity; free-electrons andband-theory; intrinsic and extrinsic semiconductor, p-n junction; superconductivity. Dielectric behaviour of materials; polarization phenomena; piezoelectricphenomena. Magnetic materials : behaviour and application. Photonic materials : refractive index, absorption and emission of light, optical fibres, lasers and opto-electronic materials.

Microprocessors and microcomputers8-bit microprocessor : architecture, CPU, module design, memory interfacing,I/O, Peripheral controllers,Application. IBM PC architecture : overview, introduction to DOS, Advanced microprocessors.

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

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 poly-silicon, silicon, siliconnitrideand silicon di-oxide; metallisation and passivation.

Power Systems : Analysis and Control Steady-state performance of overhead transmission lines and cables; principles ofactive and reactive power transfer, Distribution system; Per-unit quantities; Busadmittance and impedance matrices; load flow; economic operation; Symmetricalcomponents, analysis of symmetrical and unsymmetrical faults. Concept ofsystem stability : swing curves and equal area criterion. Flexible AC TransmissionSystems (FACTS). Computer control and Automation : Introduction to energycontrol centres; various states of a power system; SCADA systems and RTUs.

Power system protection Principles of over current, differential and distance protection. Concept of solidstate relays. Circuit brakers. Load frequency control, Reactive power control. Linebus, generator, transformer protection; numeric relays and application of DSP toprotection. Computer aided protection.

Non-conventional Energy Sources and Energy Management Introduction to the energy problem; difficulties with conventional energy sources.Wind-Energy : Basics of Wind turbine aerodynamics; wind-energy conversionsystems and their integration into electrical grid. Solar-Energy : Thermalconversion : photo-voltaic conversion. Wave-energy. Importance of EnergyManagement : Energy audit; energy economics : discount rate, payback period,internal rate of return, life cycle costing.

Digital Communication Pulse code modulation (PCM), differential pulse code modulation (DPCM), deltamodulation (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. Informationmeasure and source coding. Data networks, 7-layer architecture.

Satellite Communication, Radar and TV Satellite Communication: General overview and technical characteristics, earthstation equipment, satellite link design, CNR of Satellite system. Radar : Basicprinciples, Pulsed systems : CW Doppler radar, FMCW radar, Phase array radars.Television Systems : Television systems and standards, Black-and White-andColour-TV transmission and receiver systems.

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.