AP TRANSCO Electircal Syllabus

Syllabus for written test for Electircal 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.