NTPC Experienced Electronics Engineer Syllabus

INDICATIVE SYLLABUS: Experienced Engineer in NTPC

Executive Aptitude Test (50 Questions)

Executive Aptitude Test is common to all disciplines. This part will consist of 50 objective type questions on:

1. Verbal Ability/General English
2. Quantitative Aptitude
3. Reasoning Ability

Technical/Subject Knowledge Test (70 Questions)

ELECTRONICS DISCIPLINE

Section 1: Engineering Mathematics

Linear algebra: Vector space, basis, linear dependence and independence, matrix algebra, eigenvalues and eigen vectors, rank, solution of linear equations-existence and uniqueness.

Calculus: Mean value theorems, theorems of integral calculus, evaluation of definite and improper integrals, partial derivatives, maxima and minima, multiple integrals, line, surface and volume integrals, Taylor series.

Differential Equations: First order equations (linear and nonlinear), higher order linear differential equations, Cauchy’s and Euler’s equations, methods of solution using variation of parameters, complementary function and particular integral, partial differential equations, variable separable method, initial and boundary value problems.

Vector Analysis: Vectors in plane and space, vector operations, gradient, divergence and curl, Gauss’s, Green’s and Stokes’ theorems.

Complex Analysis: Analytic functions, Cauchy’s integral theorem, Cauchy’s integral formula,Taylor and Laurent series, residue theorem.

Numerical Methods: Solution of nonlinear equations, single and multi-step methods for differential equations, convergence criteria.

Probability and Statistics: Mean, median, mode, standard deviation, combinatorial probability, probability distributions functions-binomial, Poisson, exponential and normal: Joint and conditional probability; Correlation and regression analysis.

Section 2: Networks, Signals and Systems

Network solution methods: node and mesh analysis, Network theorems:  superposition, Thevenin’s and Norton’s theorem, maximum power transfer; Wye – Delta transformation; Steady state sinusoidal analysis using phasors; Time domain analysis of simple linear circuits; Solution of network equations using Laplace transform: Frequency domain analysis of RLC circuits; Linear 2 – Port network parameters: driving point and transfer functions; State equations for networks.

Continuous-time signals: Fourier series and Fourier transform representations, sampling theorem and applications. Discrete-time signals: discrete-time Fourier transform (DTFT), DFT, FFT, z-transform, interpolation of discrete-time signals; LTI systems: definition and properties, causality, stability, impulse response, convolution, poles and zeroes, parallel and cascade structure, frequency response, group delay, phase delay, digital filter design techniques.

Section 3: Electronic Devices

Energy bands in intrinsic and extrinsic silicon; Carrier transport: diffusion current, drift current, mobility and resistivity: Generation and recombination of carriers, Poisson and continuity P-N junction, Zener diode, BJT, MOS capacitor, MOSFET, LED, photo diode and solar cell. Integrated circuit fabrication process: Oxidation, diffusion, ion implantation, photolithography and twin-tub CMOS process.

Section 4: Analog Circuits

Small signal equivalent circuits of diodes, BJTs and MOSFETs; Simple diode circuits: clipping, clamping and rectifiers. Single-stage BJT and MOSFET amplifiers: biasing, bias stability, midfrequency small signal analysis and frequency response; BJT and MOSFET amplifiers: multi-stage, differential, feedback, power and operational: Simple op-amp circuits; Active filters; Sinusoidal oscillators: criterion for oscillation, single-transistor and op-amp configurations: Function generators, wave-shaping circuits and 555 timers; Voltage reference  circuits; Power supplies: ripple removal and regulation.

Section 5: Digital Circuits

Number systems: Combinatorial circuits: Boolean algebra, minimization of functions using Boolean identities and Karnaugh map, logic gates and their static CMOS implementations, arithmetic circuits, code converters, multiplexers, decoders and PLAs: Sequential circuits: latches and flip-flops, counters, shift-registers, finite  state machines; Data converters: sample and hold circuits, ADCs and DACs. Semiconductor memories: ROM, SRAM, DRAM: 8-bit microprocessor (8085): architecture, programming, memory and I/O interfacing.

Section 6: Control Systems

Basic’s control system components; Feedback principle; Transfer function; Block diagram representation; Signal flow graph; Transient and steady-state of LTI systems; Frequency response; Routh-Hurwitz and Nyquist stability criteria; Bode and root-locus plots; Lag, lead and lag-lead compensation; State variable model and solution of state equation of LTI systems.

Section 7: Communications

Random processes: autocorrelation and power spectral density, properties of white noise, filtering of random signals through LTI systems. Analog communications: amplitude modulation and demodulation, angle modulation and demodulation, spectra of AM and FM, superheterodyne receivers, circuits for analog communications; Information theory: entropy, mutual information and channel capacity theorem. Digital communications: PCM, DPCM, digital modulation schemes, amplitude, phase and frequency shifting keying (ASK, PSK, FSK) QAM, MAP and ML decoding, Matched filter receiver, calculation of bandwidth SNR and BER for digital modulation; Fundamentals of error correction, Hamming codes, CRC. Timing and frequency synchronization, inter-symbol interference and its mitigation; Basis of TDMA, FDMA and CDMA.

Section 8: Electromagnetics

Electrostatics; Maxwell’s equations: differential and integral forms and their interpretation, boundary conditions, wave equation. Pointing vector. Plane waves and properties: reflection and refraction, polarization, phase and group velocity, propagation through various media, skin depth. Transmission lines: equations, characteristic impedance, impedance matching, impedance transformation, Sparameters, Smith chart. Wave guides: modes, boundary conditions, cut-off frequencies, dispersion relations; antenna types, radiation pattern, gain and directivity, return loss, antenna arrays; Basic of radar; Light propagation in optical fibers.