APPSC Mains Electrical Engineering Syllabus
| Board | APPSC (Arunachal Pradesh Public Service Commission) |
| Exam | APPSC Mains |
| Paper | Optional Paper-VI and VII |
| Syllabus | Electrical Engineering Paper-I and II |
| Official website | www.appsc.gov.in |
ELECTRICAL ENGINEERING
PAPER-I
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; LT| systems; convolution; impulse response; time-domain analysis of LT| 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, BUT, 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-II
1. Control Systems :
Elements of control systems; block-diagram representations; open-loop & closed-loop systems; principles and applications of feed-back. Control system components. LT! systems : time-domain and transform- domain analysis. Stability : Routh Hurwitz criterion, root-loci, Bode-plots and polor plots, Nyquist's criterion; Design of lead4ad 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, programmabie 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.
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