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1. Basic Electronics:
Semiconductor Materials: intrinsic & extrinsic semiconductor, impurities,
doping, p & n type semiconductor, majority and minority charge carriers,
theory of PN junction
Diodes: PN junction diode, zener diode, LED, photo diode,
tunnel diode, varactor diode, schottky diode
Transistors:
BJT – type, symbols, construction, operation, of
configurations, characteristics and biasing; FET, MOSFET – type, symbols,
construction, operation and characteristics
2. Electronic Circuits:
Amplifiers:
Types/Classes of amplifiers, CE, CC and CB amplifiers, push-pull amplifiers,
feedback amplifiers, transistor power amplifiers, distortion in amplifiers
Oscillators:
classification, principle, sinusoidal oscillators, relaxation oscillators.
Power Supplies and Voltage Regulators: half wave & full wave rectifiers, bridge
rectifier, filter, voltage regulator circuits, short – circuit protection
Filter:
RC-LC Filters, low pass, high pass and band pass filters, active filters
Operational Amplifiers (OP Amp) Circuits: inverting, non-inverting and differential amplifier
3. Digital Electronics
Number System:
decimal, binary, octal, hexadecimal and BCD numbering systems, and their
conversions
Logic Gates:
NOT, OR, AND, NOR, NAND, X-OR, X-NOR gates, laws and theorems of Boolean
algebra, K-map
Combinational Logic Circuits: half adder, full adder, n-bit adder, encoder
decoder, multiplexer, demultiplexer
Sequential Logic Circuits: flip-flops, shift registers, counters, astable,
monostable and bistable multivibrators, digital clock
Analog to Digital Conversion: A/D and D/A conversion
4. Communications
Analog Communication: modulation, theory and generation of AM, DSB-SC, SSB, FM and PM;
comparison between AM, FM and PM; AM, FM and PM transmitters/receivers;
superheterodyne receiver; IF & RF amplifiers, automatic gain control (AGC),
balanced slope detector, phase discriminator, ratio detector, FM stereo
principle, equalizers, noise in analog communication systems
Digital
Communication: advantages of digital
communication; principle of PAM, PWM PPM and PCM; PSK, FSK and QAM techniques;
noise in digital communication systems
Optical
Fibre Communication: advantages of
optical transmission, optical spectrum, types of optical fibre cable,
attenuation in optical fibre cable, joining of fibres-mechanical coupling and
fusion splicing, laser diodes, photodiodes, attenuation measurements, operation
and line supervision, optical fibre network in NEA
Power
Line Carrier Communication (PLCC):
introduction and general theory, transmission channels, frequency range,
modulation technique, carrier frequency generation, transmitting amplifier,
pilot channel, demodulation, HF filter tuning, line equalization, PLCC system
in NEA
Microwave
Communication: microwave transmission
and reception, microwave triodes, clystrons, magnetrons
Transmission
Lines: basic principles, fundamentals
of transmission lines, characteristics impendence, Types of Transmission Lines
(Coaxial cable, Open wire, Wave guide), Equivalent diagram of T.L., Matched and
Mismatched T.L., losses in transmission lines, standing waves
5. Antennas and Propagation
Propagation of Waves: electromagnetic wave and its properties, different types of
electromagnetic waves, propagation characteristics of EMW and short wave
EMW, anamal propagation of VHF, fading
of EMW, diversity and its types, reflection and refraction of waves, ground
waves, space waves, sky waves, tropospheric scattering
Waveguides
and Resonators: theory and operation
of waveguide, parallel plane, rectangular, circular, ridged and flexible
waveguides; waveguide coupling, matching and attenuation; theory and operation
of resonator
Antennas: types, antenna gain, antenna resistance, bandwidth,
beamwidth, polarization, directivity, effect of antenna height, dipole, dipole
arrays, folded dipole; yagi, parabolic, horn, helical, discone and loop
antannas
6. Instrumentation and Measuring Equipment
Components of
instrumentation systems:
transduction, signal processing, signal transmission;
Performance parameters: accuracy, sensitivity, precision, resolution,
linearity, response time, frequency response, bandwidth, error in measurement;
Signal processing: signal amplification, integration, differentiation, filtering, wave
shaping, noise problems
Control system:
closed loop and open loop system
Measuring Equipments: oscilloscope, RF power meters, spectrum analyzers, label meter,
frequency generator, analog & digital multimeter and its types (moving coil
type, fixed coil type, etc), megger, measuring and testing equipments for
optical fibre link, other measuring equipments in NEA
7. Institutional know-how
General knowledge of Nepal Electricity Authority, its
organizational structure and function of various business groups .
General knowledge of various power plants of Nepal, their types, salient
features, and their geographical
locations .
General knowledge on Nepalese power transmission
system, voltage levels and lengths, export-import links for power exchange with
India.
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