Electrical Engineering Optional Test Series for UPSC Mains

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Test series

Electrical Engineering test series

12 sectional + 14 full-length tests

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3 questions per day for 6 months

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2014-2024 model solutions, topic-wise

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Test schedule

12 sectional tests followed by 14 full-length mocks.

Test	Type	Topic	Date
1	Sectional – Paper I	Circuit Theory	03-Oct
2	Sectional – Paper I	Signals and Systems	04-Oct
3	Sectional – Paper I	E.M. Theory	10-Oct
4	Sectional – Paper I	Analog Electronics & Digital Electronics	11-Oct
5	Sectional – Paper I	Energy Conversion	17-Oct
6	Sectional – Paper I	Power Electronics and Electric Drives	18-Oct
7	Sectional – Paper I	Analog Communication	24-Oct
8	Sectional – Paper II	Control Systems	25-Oct
9	Sectional – Paper II	Microprocessor and Microcomputers	31-Oct
10	Sectional – Paper II	Measurements and Instrumentation	01-Nov
11	Sectional – Paper II	Power Systems & Power System Protection	07-Nov
12	Sectional – Paper II	Digital Communication	08-Nov
13	Full-Length Test	Paper I – Full Syllabus	14-Nov
14	Full-Length Test	Paper II – Full Syllabus	15-Nov
15	Full-Length Test	Paper I – Full Syllabus	21-Nov
16	Full-Length Test	Paper II – Full Syllabus	22-Nov
17	Full-Length Test	Paper I – Full Syllabus	28-Nov
18	Full-Length Test	Paper II – Full Syllabus	29-Nov
19	Full-Length Test	Paper I – Full Syllabus	05-Dec
20	Full-Length Test	Paper II – Full Syllabus	06-Dec
21	Full-Length Test	Paper I – Full Syllabus	12-Dec
22	Full-Length Test	Paper II – Full Syllabus	13-Dec
23	Full-Length Test	Paper I – Full Syllabus	19-Dec
24	Full-Length Test	Paper II – Full Syllabus	20-Dec
25	Full-Length Test	Paper I – Full Syllabus	26-Dec
26	Full-Length Test	Paper II – Full Syllabus	27-Dec

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Electrical Engineering Optional syllabus

The UPSC syllabus this test series covers, topic by topic.

Electrical Engineering - Paper I

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.
Signals and 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.
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.
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.
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).
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.
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.
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.

Electrical Engineering - Paper II

Control Systems: Elements of control systems; block diagram representation; open-loop & closed-loop systems; principles and applications of feedback. Control system components. LTI systems: time-domain and transform-domain analysis. Stability: Routh Hurwitz criterion, root-loci, Bode plots and polar plots, Nyquist’s criterion; Design of lead-lag compensators. Proportional, PI, PID controllers. State-variable representation and analysis of control systems.
Microprocessor and Microcomputers: PC organisation; CPU, instruction set, register set, timing diagram, programming, interrupts, memory interfacing, I/O interfacing, programmable peripheral devices.
Measurements 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, distortion-meter. Transducers: thermocouple, thermistor, LVDT, strain-gauge, piezo-electric crystal.
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.
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.
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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Electrical Engineering Optional test series