Airport Authority of India Junior Executive Syllabus For Electrical Engineer
Part -1 (NON TECHNICAL)
General Knowledge, General Intelligence,
General Aptitude, English
Part -2 (TECHNICAL)
Only Ask Electrical Engineering Related Question answer
General Knowledge Syllabus
Current Events – National, International.
Geography of India
History of India
Culture & Heritage of
Science & Technology
Social Events related to India etc
General Intelligence Syllabus
Arithmetic Number Series
Coding and Decoding etc
Similarities and Differences
Time and Work
Profit and Loss
Problems on Trains
Ratios & Proportions
Time & Distance etc
Parts of Speech
Active & Passive voice
Antonyms & Synonyms etc
Part -2 (TECHNICAL )
Only Electrical Engineering questions
Circuit Theory: Circuit components; network graphs; KCL, KVL; circuit analysis methods: nodal analysis, mesh analysis; basic network theorems and applications; transient analysis: RL, ·Rc and RLC circuits; sinusoidal steady state analysis resonant circuits coupled circuits balanced 3-phase circuits Two-port networks.
Signals and systems: Representation of continuous and discrete ·time signals;
shifting and scaling operation; liner time invariant and causal systems: Fourier,
Laplace and Z transform.
Instrumentation: Insulation megger, earth megger, Kelvin’s Double bridge
Quadrent electrometer, Rotating sub standard, TOO meter.
Transformers: Constructional details- Principle of operation- vector diagrams ,
on no load and load – regulation and efficiency – equivalent circuits and tests for
the determination of parameters of equivalent circuits – types of three phase
transformers and their applications – Scott connection of transformers.
3Phase Induction Motors: Principle of operation – Cage and Slip ring motors
– torque slip characteristic~ – methods of speed control.
3-Phase Alternators: Principle of operation and constructional detai.ls -types
of Alternators -synchronous impedance – voltage regulation – short circuit ratio
and its importance – phasor diagrams of round rotor and salint pole machines
synchronisation – behavior of an alternator connected to infinite bus – effect of
varying excitation current and mechanical torque – power angle curves·- control
of active and reactive powers .
3-Phase Synchronous Motors: Principle of operation- torque developed and
methods of starting – V and Inverted V curves – effects of variations of
excitation – synchronous condensers.
Single phase induction Motors: Types of single phase motors – Types of
Single phase induction motors – characteristics and methods of starting
shaded pole induction motor.
Transmission & Distribution: Line constants – Inductance and Capacitance calculations – Representation of over head Lines – Short, Medium and Long lines -ABCD constants- Mechanical Design- Seg, Tension Calculations, Tuned Power Lines.
Over Head Line Insulators: Types·of Insulators- Potential distributions over a
string of suspension insulators – string efficiency – Methods of improving string·
Underground Cables: Insulation of cables Grading of cables – Capacitance Measurement in cables- Testing of Cables- Power frequency withstand tests.
Fault Calculations: Balanced Fault calculations on systems – Symmetrical
components – Types of faults – Analysis of unbalanced faults.
Protection: Characteristic of Relays – Over current, directio·nal and distance protection of lines. Protection of Alternators against stator faults, rotor faults, loss of excitation,unbalanced loading, overloading, failure of prime mover. Over speeding and
over Voltage. Protection of Transformers against winding faults, ·overloads and
external short circuits.
Circuit Breakers: Air~blast, oil, minimum oil, vacuum -sulphur hexafluoride and
d.c. circuit breakers -Relative merits and demerits. “
Power System Protection: Principles of over current, differential and distance . protection. Concept of solid state re.lays. Circuit breakers. Computer aided
protection: Introduction; line bus, generator,· transformer protection; numeric relays
and application of DSP to protection.
Microprocessors and Microcomputers: PC organisation; CPU, instruction ·set,.
register set, timing diagram, programming, interrupts, memory interfacing, 110
interfacing, programmable peripheral devices.
Analog and Digital Electronics:· Characteristics of diodes. BJT, MOSFET,
amplifiers …,.biasing, equivalent circuit and frequency response; oscillators and
feedback amplifiers; operational amplifiers characteristics and applications; simple
active filters: VCOs and timers; combinational and sequential logic circuits; multiplexer; Schmitt trigger; multivibrators; sample and hold circuits; AID 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 prir;1ciples
of operation; triggering circuits; phase control rectifiers; bridge c~mverters – fully
controlled and half controlled; princip_les of choppers and inverters~ basis concepts
of adjustable speed de and ac drives.
Fiber Optic Systems Multiplexing – Time division multiplexing, frequency division
multiplexing, optical properties of materials, refractive index absorption and emission of light, optical fibers lasers and optoelectronic materials, fiber optic links.
Digital Communication: Pulse code modulation (PCM), differential pulse code
modulation (DPCM), delta modulation (OM), Digital modulation and demodulation schemes: amplitude, phase and frequency keying schemes. (ASK, PSK, FSK). -Error ,
control coding: error detection and correction, linear block codes, convolution
codes. Information measure and source coding. Data networks, 7 -layer architecture.
Fundamentals – Air properties, psychometry, basic processes, for HVAC system.
PUMPS: Water lifting devices, classification of pumps, centrifugal pump and its ·
characteristics, specific speed, NPSH and cavitation, selection of pumps.
HYDRAULICS AND FLUID MECHANICS: Definition and properties of fluids.Units of measurement, kinematics of fluid flow, Bernoulli’s equation and Euler’s equation of motion. Dimensional analysis and similitude. Laminar and turbulent flow. General equation for head loss in pipes. Flow through pipes; open channel flow, hydraulic jump; Measurement of discharge in pipes and open channels.
Renewable energy sources.