Civil Service Exam Syllabus for IAS Main Exam – Electrical Engineering Paper I

Civil Service Exam Syllabus for IAS Main Exam – Electrical Engineering – Paper II

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; frequency-response 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, multivibrators. 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 preformance 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 half – controlled; 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.

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