PAPER - I
1. Circuit Theory:
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; coupled circuits; balanced 3-phase circuits; Two-port networks.
2. 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,
FFT Processing of analog signals through discrete-time systems.
3. E.M. Theory:
Maxwell’s equations, wave propagation in bounded media. Boundary conditions, reflection and refraction of
plane waves. Transmission line: travelling and standing waves, impedance matching, Smith chart.
4. 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; frequencyresponse
of amplifiers. OPAMP circuits.
Filters; sinusoidal oscillators: criterion for oscillation; single-transistor and OPAMP configurations. Function
generators and wave-shaping circuits. Linear and switching power supplies.
5. Digital Electronics:
Boolean algebra; minimization 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, multi-vibrators. Sample and
hold circuits, ADCs and DACs. Semiconductor memories. Logic implementation using programmable devices
(ROM, PLA, FPGA).
6. Energy Conversion:
Principles of electromechanical energy conversion: Torque and emf in rotating machines. DC machines:
characteristics and performance analysis; starting and speed control of motors; Transformers: principles of
operation and analysis; regulation, efficiency; 3-phase transformers. 3-phase induction machines and
synchronous machines: characteristics and performance analysis; speed control.
7. 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 halfcontrolled;
principles of thyristor choppers and inverters; DC-DC converters; Switch mode inverter; basic
concepts of speed control of DC and AC Motor drives applications of variable-speed drives.
8. 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, Deemphasis, Preemphasis. 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
1. Control Systems:
Elements of control systems; block-diagram representation; open-loop & closed-loop systems; principles and
applications of feed-back. Control system components. LTI systems: time-domain and transform-domain
analysis. Stability: Routh Hurwitz criterion, root-loci, Bodeplots and polar plots, Nyquist’s criterion; Design of
lead-lad compensators. Proportional, PI, PID controllers. State-variable representation and analysis of control
systems.
2. Microprocessors and Microcomputers:
PC organisation; CPU, instruction set, register set, timing diagram, programming, interrupts, memory
interfacing, I/O interfacing, programmable peripheral devices.
3. Measurement and Instrumentation:
Error analysis; measurement of current, voltage, power, energy, power-factor, resistance, inductance,
capacitance and frequency; bridge measurement. Signal conditioning circuit; Electronic measuring
instruments: multimeter, CRO, digital voltmeter, frequency counter, Q-meter, spectrum-analyzer, distortionmeter.
Transducers: thermocouple, thermistor, LVDT, strain-gauge, piezo-electric crystal.
4. 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; load 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. Basic concepts of HVDC transmission.
5. Power System Protection:
Principles of overcurrent, differential and distance protection. Concept of solid state relays. Circuit breakers.
Computer aided protection: Introduction; line bus, generator, transformer protection; numeric relays and
application of DSP to protection.
6. 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.
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