PAPER-I
Electrical Circuit Theory and Applications: Circuit components; circuit analysis techniques: mesh and nodal analysis, graph theory, duality; network theorems and applications; transient analysis: RL, RC and RLC circuits; sinusoidal steady state analysis; resonant circuits and applications; coupled circuits; balanced three phase systems. Two port networks; poles and zeros of network functions. Elements of network synthesis. Filter theory: Passive and active filters; design and applications.
Signals and Systems: Representation of continuous time and discrete time signals and systems; LTI systems; convolution; impulse response; time domain analysis of LTI systems; 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.
Electromagnetic Theory: Maxwell’s equations, wave propagation in bounded media, boundary conditions, reflection and refraction of plane waves. Transmission line: Distributed parameters circuits, travelling waves, impedance matching. Waveguides, resonators, planar transmission lines; strip line and micro strips. EMC and EMI.
Analog Electronics: Characteristics and equivalent circuits of diodes, BJT, JFET and MOSFET. Diode rectifier, clipping and clamping circuits. Biasing and stability. Amplifiers: single and multistage, FET amplifiers, differential, operational, feedback and power. OP AMP circuits, sinusoidal oscillators; criteria for oscillations, single transistor and OPAMP configurations.
Function generators and wave shaping circuits. Power supplies.
Digital Electronics: Boolean algebra; minimization of Boolean function; logic gates; digital IC families (DTL, TTL, ECL, MOS, CMOS). Combinational circuits: arithmetic circuits, multiplexers and decoders. Sequential Circuits: Latches and flip-flops, counters and shift registers. Comparators, timers, multi vibrators. Sample and hold circuits, ADCs and DACs. Semiconductor memories. Logic implementation using programmable devices (ROM, PLA, FPGA).
Energy Conversion: Types and construction, equivalent circuit, phasor diagram, tests, regulation and efficiency; autotransformer, three phase transformation, transformer harmonics, importance of transformer neutral in three phase transformations, Scott connections, three-phase to sixphase transformation. Principles of energy conversion-d.c. generators and motors: Performance characteristics, starting arid speed control armature reaction and commutation; three-phase induction motor; performance characteristics, starting and speed control. Single-phase capacitor start & run induction motor. Synchronous generators: performance characteristics, regulation, parallel operation. Synchronous motors: starting characteristics, applications; synchronous condenser. FHP motors, permanent magnet and stepper motors, brushless d.c. motors, singlephase reluctance motors, Universal motor and hysteresis motor.
Power Electronics And Electric Drives: Semiconductor power devices: diode, Power transistor, thyristor, triac, Diac, GTO, IGBT, RCT, MCT, SITh, SIT and MOSFET, static & dynamic 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 AC motor drives. Application of variable speed drives.
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 and FM signals; narrowband FM; generation and detection of FM and PM. CW modulation system: Superhetrodyne receivers, AM receivers, communication receivers, FM receivers, phase locked loop, SSB receiver. Signal to noise ratio calculation for AM and FM receivers.
PAPER-II
Control Systems:
Elements of control systems; block-diagram representation; open-loop & closed-loop systems; principles 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.
Electrical Engineering Materials:
Electrical and electronic behaviour of materials; conductivity; free-electrons and band theory; intrinsic and extrinsic semiconductor, p-n junction; solar cells, super-conductivity. Dielectric behaviour of materials; polarization phenomena; piezo-electric phenomena. Magnetic materials; behaviour and application. Photonic materials: refractive index, absorption and emission of light, optical fibres, lasers
Microprocessors and Microcomputers:
16-bit microprocessor: architecture, CPU, module design, memory interfacing, I/O, Peripheral controllers, Multiprocessing. PC architecture: overview, Advanced microprocessors.
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, distortionmeter. Transducers: thermocouple, thermistor, LVDT, strain-gauge, piezo-electric crystal. Use of transducers in measurements of non-electrical quantities. Data-acquisition systems.
IC Technology:
Overview of IC Technology. Unit-steps used in IC fabrication: photo-lithography, wet and dry etching, oxidation, diffusion, ion-implantation. CVD and LPCVD techniques for deposition of polysilicon, silicon, silicon-nitride and silicon dioxide.
Power Systems:
Analysis and Control: Steady-state performance of overhead transmission lines and cables; principles of active and reactive power transfer and distribution; per-unit quantities; bus admittance and impedance matrices; power flow; voltage control and power factor correction; economic operation; symmetrical components, analysis of symmetrical and unsymmetrical faults. Concept of system stability: swing curves and equal area criterion. Static VAR system. Generation and Measurement of High Voltage. Basic concepts of HVDC and multi-phase (sixphase) transmission; FACTS. Computer control and Automaton: Introduction to energy control centers; various states of a power system; SCADA systems and RTUs. Active power control; Speed control of generators, tie line control, frequency control. Economic dispatch. Optimal Power Flow. Power system protection: Principle of over-current, differential and distance protection. Concept of solid state relays. Circuit breakers. Computer aided protection: Introduction; line bus, generator, transformer protection; numeric relays. Introduction to restructuring and deregulation of power sector.
Non-Conventional Energy Sources and Energy Management:
Introduction to the energy problem; difficulties with conventional energy sources. Wind-Energy:
Wind-energy conversion systems and their integration into electrical grid. Solar-Energy: thermal conversion: photovoltaic conversion. Wave-energy. Importance of Energy Management: Energy audit; energy economics.
Digital Communication:
Pulse code modulation (PCM), differential pulse code modulation (DPCM), Digital modulation and demodulation schemes: amplitude, phase and frequency keying schemes (ASK, PSK, FSK).
Error control coding: error detection and correction, linear block codes. Information measure and source coding. Data networks, 7-layer architecture.
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 radars. Television Systems: Television systems and standards, Black and White and Colour-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 fibre, lasers and optoelectronic materials Fibre optic links.
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