ELECTRICAL ENGINEERING SYLLABUS FOR UPSC IAS CIVIL SERVICES MAINS EXAMINATION

ELECTRICAL ENGINEERING

                          PAPER-FIRST

1. Circuits—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 and Systems :
Representation of continuous-time and discrete-time
signals and 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 lines : 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; minimisation 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 performance analysis; speed control.
7. Power Electronics and Electric Drives :
Semi-conductor 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; narrows band
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 or AM and FM receivers.

                         PAPER -SECOND

1. Control Systems :
Elements of control systems; block-diagram
representations; 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, Bode-plots and
polor 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 settiming
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 measurements. Signal conditioning circuit;
Electronic measuring instruments : multimeter, CRO, digital
voltmeter, frequency counter, Q-meter, spectrum-analyser,
distoration-meter. Transducers : thermocouple, thermistor,
LVDT, strain-guage, 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. Concepts 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 brakers.
Computer aided protection : introduction; line, bus, generator,
transformer protection; numeric relays and application of DSP
to protection.
6. Digital Communication :
Pulse code modulation (PCM), defferential 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,
convolation codes. Information measure and source coding.
Data networks, 7-layer architecture.