APTransco came into existence on 1.02.1999 as a consequence of restructuring of the erstwhile AP State Electricity Board (APSEB) to look after Trans-mission of Electricity in Andhra Pradesh. From Feb 1999 to June 2005 APTransco remained as Single buyer in the state - purchasing power from various Generators and selling it to DISCOMs in accordance with the terms and conditions of the individual PPAs at Bulk Supply Tariff (BST) rates. Subsequently, in accordance with the Third Transfer Scheme notified by GoAP, APTransco has ceased to do power trading and has retained with powers of controlling system operations of Power TransmissionLocation : HyderabadDesignation : Assistant EngineerQualification : Elecrical SyllabusExperience : FreshersComplete Description :
APTRANSCO
Transmission Corporation of Andhra Pradesh
Application for the post of Assistant Engineer ( ELECTRICAL /
TELECOM / CIVIL )
APTRANSCO Recruiting Assistant Engineer – 2009
Electrical Syllabus
Electric
Circuits:
Network graph,
KCL, KVL, node and mesh analysis, star/ delta transformation; electromagnetic
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, three phase circuits, power measurement .
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, regulation and parallel operation of
generators, motor starting, characteristics and applications .
Power
Systems:
Basic
power generation concepts; transmission line models and performance;
underground cable, 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; principles of over-current, differential and distance protection;
protection of alternator, transformer, transmission lines neutral earthing,
solid state relays and digital protection; circuit breakers; system stability
concepts, swing curves and equal area criterion
Utilization
& Control Systems:
Principles
of feedback; transfer function; block diagrams; steady-state errors; Routh and
Nyquist techniques; Bode plots; root loci; lag, lead and lead-lag compensation;
Heating - resistance, induction, dielectric; Welding – spot, seam and butt;
Electric traction – speed-time curves, tractive effort;
Measurements:
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;
Analog
and Digital Electronics:
Characteristics
of diodes, BJT, FET; amplifiers -biasing, equivalent circuit and frequency
response; oscillators and feedback amplifiers; Combinational and sequential
logic circuits; multiplexer; Schmitt trigger; A/D and D/A converters; 8-bit
microprocessor basics, architecture, programming and interfacing.
Power
Electronics and Drives:
Semiconductor
power diodes, transistors, thyristors, triacs, GTOs, MOSFETs and IGBTs - static
characteristics and principles of operation; triggering circuits; phase control
rectifiers; bridge converters - fully controlled and half controlled;
principles of choppers and inverters; basic concepts of adjustable speed dc and
ac drives.
Important
Links:
APTRANSCO Assistant Engineer Notification
2010