Note :-

1. Objective type question paper.
2. Exam Duration: 2 Hours.
3. All questions carry equal marks.
4. There will be negative marking.
5. Candidates are required to opt for only one subject.

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Syllabus : Electronics & Communication Engineering

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1. Electronic Devices:

1. Semiconductor Devices: intrinsic and extrinsic semiconductors and their properties. p-n junction diode, Tunnel diode, BJT, JFET, MOS, MOSFET, LED, p-I-n and avalanche photo diode, Basics of LASER and MASER.
2. VLSI technology: integrated circuits fabrication process, oxidation, diffusion, ion implantation, photolithography, CMOS process.
3. Power Switching Devices: SCR, GTO, Power MOSFET, Basics of Optoelectronics

2. Analog Circuits:

1. Small Signal Equivalent circuits of diodes, BJTs, MOSFETs and CMOS. Simple diode circuits, clipping, clamping, rectifier.
2. Biasing and bias stability of transistor and FET amplifiers.
3. Amplifiers: single-and multi-stage, differential and operational, feedback, and power. Frequency response of amplifiers.
4. Simple op-amp circuits. Filters.
5. Sinusoidal oscillators; criterion for oscillation; single-transistor and op-amp configurations. Function generators and wave-shaping circuits, 555 Timer. Power supplies.

3. Digital circuits:

1. Boolean algebra, minimization of Boolean functions; logic gates; digital IC families (DTL, TTL, ECL, MOS, CMOS).
2. Combinational circuits: arithmetic circuits, code converters, multiplexers, decoders, PROMs and PLAs.
3. Sequential circuits: latches and flip-flops, counters and shift-registers.
4. Sample and hold circuits, ADCs, DACs. Semiconductor memories.
5. Microprocessor(8085): architecture, programming, memory and I/O interfacing.

4. Electronic Measurement and Instrumentation:

1. Basic Concepts, Standards and error Analysis: Measurement of basic Electrical quantities and parameters; Electronic Measuring Instruments and their Principles of Working; analog and digital measurements, Comparison, Characteristics, Applications.
2. Transducers, Electronic Measurements of Non Electrical Quantities like Temperature, Pressure, Humidity etc. Basics of Telemetry for Industrial use.

5. Networks:

1. Network graphs: matrices associated with graphs; incidence, fundamental cut set and fundamental circuit matrices. Solution methods: nodal and mesh analysis.
2. Network theorems: superposition, Thevenin's and Norton's Theorem, Maximum power transfer Theorem, Wye-Delta transformation.
3. Steady state sinusoidal analysis using phasors. Linear constant coefficient differential equations; time domain analysis of simple RLC circuits, Solution of network equations using Laplace transform: frequency domain analysis of RLC circuits.
4. 2-port network parameters: driving point and transfer functions. State equations for networks.

6. Electromagnetics:

1. Elements of vector calculus; Gauss' and Stokes' theorems, Maxwell's equations, Wave equation, Poynting vector.
2. Plane waves: propagation through various media; reflection and refraction; phase and group velocity; skin depth.
3. Transmission lines: characteristic impedance; impedance transformation; Smith chart; impedance matching; S parameters, pulse excitation.
4. Waveguides: modes in rectangular waveguides; boundary conditions; cut-off frequencies;. Basics of propagation in dielectric waveguide and optical fibers its dispersion and attenuation characteristics; Basics of Antennas: Dipole antennas; radiation pattern; antenna gain.

7. Signals and Systems:

1. Definitions and properties of Laplace transform, continuous-time and discrete-time Fourier series, continuous-time and discrete-time Fourier Transform, DFT and FFT, z-transform. Sampling theorem.
2. Linear Time-Invariant (LTI) Systems: definitions and properties; causality, stability, impulse response, convolution, parallel and cascade structure, frequency response, group delay, phase delay. Signal transmission through LTI systems.

8. Control Systems:

1. Basic control system components; block diagram description, Open loop and closed loop (feedback) systems and stability analysis of these systems.
2. Signal flow graphs and their use in determining transfer functions of systems; transient and steady state analysis of LTI control systems and frequency response.
3. Tools and techniques for LTI control system analysis: root loci, Routh-Hurwitz criterion, Bode and Nyquist plots.
4. Elements of lead and lag compensation, elements of Proportional-Integral-Derivative (PID), PD, PI Control Systems.
5. State variable representation and solution of state equation of LTI control systems.

9. Communications – I

1. Random signals and noise: probability, random variables, probability density function, autocorrelation, power spectral density.
2. Analog communication systems: amplitude and angle modulation and demodulation systems, superheterodyne receivers; signal-to-noise ratio (SNR) calculations for amplitude modulation (AM) and frequency modulation (FM) for low noise conditions.

10. Communications – II

1. Digital communication systems: pulse code modulation (PCM), differential pulse code modulation (DPCM), digital modulation schemes: amplitude, phase and frequency shift keying schemes (ASK, PSK, FSK), matched filter receivers, bandwidth consideration and probability of error calculations for these schemes.
2. Fundamentals of information theory and Coding. Basics of TDMA, FDMA and CDMA and GSM. Basics of Satellite Communication.