Rajasthan Public Service Commission
RAS Syllabus (Main): Electrical Engineering (Code No. 13)
Electrical Engineering Paper-I
(1) GENERATION - Different methods of conventional power generation
(diesel, steam, hydro and nuclear), load curve; factors affecting the economics
of power generation. Incremental rate cures. Condition for minimum input in
isolated and interconnected power systems. Non-conventional methods of power
generation like, magneto hydrodynamics, solar, wind, geothermal and Tindal
(2) TRANSMISSION - Transmission line parameters - resistance,
inductance and capacitance calculations. Performance of short, medium and long
lines. Line Insulators; their construction, testing. Corona and its effect.
Neutral earthing methods. Underground cable Power circle diagrams. Basic ideas
of power system stability, swing equation, equal-area criterion, Methods to
improve stability limits.
(3) SWITCH-GEAR AND PROTECTION - Theories of arc extinction,
comparative merits of bulk oil, minimum oil, air blast and SF6 circuit breakers.
Causes and consequences of dangerous currents. Current limiting reactors. Busbar
arrangements. Requirements of Protective relays, Protection of line; distance
protection, carrier current protection. Protection of synchronous generators,
transformers, and busbars. Introduction to static relays. Symmetrical components
and their applications.
(4) TRANSFORMERS, INDUCTION MOTORS - EMF equation of transformers,
construction of large power transformers and distribution transformers. Phasor
diagram and equivalent circuit of transformers Regulation. Testing of
transformers. Parallel operation of three-phase transformers. Efficiency and all
day efficiency. Construction and principle of operation of three-phase induction
motors. Torque-slip characteristics, equivalent circuit and determination of its
parameters. Circle diagram, Methods of starting and testing. Principle of
operation, methods of starting single-phase induction motor.
(5) SYNCHRONOUS MACHINES - EMF equation, Methods of obtaining
sinusoidal wave form, Calculation of regulation by synchronous impedance, MMF,
ASA methods. Theories of cylindrical rotor and salient pole synchronous
machines. Parallel operation of Synchronous generators. Synchronising power.
Power-angle characteristics. Principle of synchronous motor. Starting-methods,
V-curves, hunting and its prevention.
(6) HIGH VOLTAGES SYSTEMS - Methods of high voltage generation D.C.
Power frequency and impulse testing of high voltage apparatus, High voltage
Electrical Engineering Paper-I
(1) NETWORKS - Network parameters, topological concepts, formulation
of mesh and node equation, number of independent equation. Duality. Network
theorems and their applications. Two port networks. Supplied circuits,
coefficient of coupling resonance in coupled circuits. Transient and steady
state solution of R-L-C networks. Filters; image impedance, attenuation, phase,
shift and insertion losses in constant K and M-derived filters. Analysis of
polyphase unbalanced networks.
(2) MEASUREMENTS - Principle of operation and construction of moving
coil, moving iron, dynamometer, induction, electrostatic and thermocouple type
instruments, magger, ohmmeter, wattmeter and energy meter. Ballistic and
vibration galvanometers. Measurement of low, medium and high resistances. A.C.
bridges. Instrument transformers; constructional details, measurement of phase
and ratio error.
(3) INSTRUMENTATION - Transducers in instrumentation for measurement
of displacement pressure, strain, temperature etc. Signal conditioners,
recorders and display devices. Nuclear instrumentation. Digital measurement of
voltage, current power, time, frequency and phase.
(4) POWER ELECTRONICS - SCRs Triacs and other devices, basic theory of
operation, characteristics, ratings, protection. Series and parallel operation-
Firing Circuits, line commutated converters, chopper circuits, inverter, Series,
parallel and bridge inverters, voltage control, Speed control of motors.
(5) CONTROL SYSTEMS - Open loop and closed loop control. Feedback
control systems. Transfer function and state space analysis of linear systems.
Stability study by Routh-Hurwitz and Nyquist methods. Root-locus techniques.
Design of compensators.
(6) COMPUTER ENGINEERING - Basic layout of digital computer,
input-output devices, memory organization, Binary arithmetic, logic circuits,
counters, shifts registers. Basic control functions.
(7) MICRO PROCESSOR SYSTEM - Organization and programming of a
microprocessor. Domestic & Industrial applications. Semi-conductor memories.
Register organization, Interfacing memory and input-output devices. Data
transfer-applications of micro-processors.
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