7/24/2019 SSC JE Electrical Engg

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SSC JE Electrical Engg. Syllabus 2015

Basic concepts : Concepts of resistance, inductance, capacitance, and various factors affectingthem. Concepts of current, voltage, power, energy and their units.Circuit law : Kirchhoff’s law, Simple Circuit solution using network theorems.

Magnetic Circuit : Concepts of flux, mmf, reluctance, Different kinds of magnetic materials, agneticcalculations for conductors of different configuration e.g. straight, circular, solenoidal, etc. !lectromagneticinduction, self and mutual induction.

AC Fundaentals : "nstantaneous, peak, #..S. and average values of alternating waves,#epresentation of sinusoidal wave form, simple series and parallel $C Circuits consisting of #.%. and C, #esonance, &ank Circuit. 'oly 'hase system ( star and delta connection, ) phase power, DCand sinusoidal response of #*%and #*C circuit.

Measureent and easuring instruents : easurement of power + phase and ) phase,

-oth active and re*active and energy, / wattmeter method of ) phase power measurement.easurement of fre0uency and phase angle. $mmeter and 1oltmeter +-oth moving coil and moving iron

type, !xtension of range, 2attmeter, ultimeters, egger, !nergy meter $C 3ridges. 4se of C#5,Signal 6enerator, C&, '& and their uses. !arth 7ault detection.

Electrical Mac!ines : +a D.C. achine ( Construction, 3asic 'rinciples of D.C. motors andgenerators, their characteristics, speed control and starting of D.C. otors. ethod of -raking motor,%osses and efficiency of D.C. achines. +- phase and ) phase transformers ( Construction, 'rinciplesof operation, e0uivalent circuit, voltage regulation, 5.C. and S.C. &ests, %osses and efficiency. !ffect ofvoltage, fre0uency and wave form on losses. 'arallel operation of phase 8 ) phase transformers. $utotransformers. +c ) phase induction motors, rotating magnetic field, principle of operation, e0uivalentcircuit, tor0ue*speed characteristics, starting and speed control of ) phase induction motors. ethods of-raking, effect of voltage and fre0uency variation on tor0ue speed characteristics.7ractional Kilowatt otors and Single 'hase "nduction otors : Characteristics and applications.Synchronous achines ( 6eneration of )*phase e.m.f. armature reaction, voltage regulation, paralleloperation of two alternators, synchroni9ing, control of active and reactive power. Starting and applicationsof synchronous motors.

"eneration# $ransission and %istribution & Different types of power stations, %oad factor,

diversity factor, demand factor, cost of generation, inter*connection of power stations. 'ower factorimprovement, various types of tariffs, types of faults, short circuit current for symmetrical faults.Switchgears ( rating of circuit -reakers, 'rinciples of arc extinction -y oil and air, .#.C. 7uses,'rotection against earth leakage 8 over current, etc. 3uchholt9 relay, er9*'rice system of protection ofgenerators ; transformers, protection of feeders and -us -ars. %ightning arresters, various transmissionand distri-ution system, comparison of conductor materials, efficiency of different system. Ca-le (Different type of ca-les, ca-le rating and derating factor.

Estiation and costing : !stimation of lighting scheme, electric installation of machines and

relevant "! rules. !arthing practices and "! #ules.4tili9ation of !lectrical !nergy : "llumination, !lectric heating, !lectric welding, !lectroplating, !lectricdrives and motors.

Basic Electronics : 2orking of various electronic devices e.g. ' < =unction diodes, &ransistors+<'< and '<' type, 3=& and =7!&. Simple circuits using these devices.