aptransco syllabus for assistant engineer post – electrical stream

Posted by Raju Sykam on October 4, 2008. Electrical, blog - 234 Comments

Syllabus for written test for Electrical Engineering Graduates – AP TRANSCO


Electric Circuits:

Network graph, KCL, KVL, node and mesh analysis, star/delta transformation; electro-magnetic induction; mutual induction; AC Fundamentals; harmonics, transient response of dc and ac networks; sinusoidal steady-state analysis; resonance; ideal current and voltage sources; Thevenin’s Norton’s Superposition and Maximum power transfer theorems,. Two port networks, z parameters, y-parameters, three phase circuits, power measurements;

Electrical Machines:

Single phase transformer- equivalent circuit, phasor diagram, tests, regulation and efficiency; three phase transformers-connections, parallel operation; auto-transformer; DC machines-types, windings, generator/motor characteristics, armature reaction and commutation, starting and speed control of motors; three-phase induction motors-principles, types, performance characteristics, starting and speed control; single-phase induction motors; synchronous machines-performance, regular and parallel operation of generators, motor starting, characteristics and applications

Power Systems:

Basic power generation concepts; transmission line models and performance; underground cables; string insulators; corona; distribution systems; per-unit quantities; bus impedance and admittance matrices; load flow; voltage control; power factor correction; economic operation; symmetrical components; fault analysis; current limiting reactors; principles of over-current, differential and distance protection; protection of alternator, transformer, transmission lines, neutral earthing, solid state relays; circuit breakers; system stability concepts, swing curves and equal area criterion;

Utilization, Electrical and Electronic measurements:

Heating-resistance, induction, dielectric; welding-spot, seam and butt; electric traction-speed-time curves, tractive effort; bridges and potentiometers; PMMC, moving iron, dynamometer and induction type instruments; measurement of voltage, current, power, energy and power factor; digital voltmeters and multi meters; phase, time and frequency measurement; Q-meters; oscilloscopes and potentiometric recorders;

Power Electronics:

Semiconductor power diodes, transistors, thyristors, triacs, GTOs, MOSFETs and IGBTs-static characteristics and principle of operation; triggering circuits; phase control rectifiers; bridge converters-fully controlled and half controlled; principles of choppers and inverters; adjustable speed dc and ac drivers;


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