Syllabus for the post of Tradesman (Electronics)

Detailed syllabus for the post of Tradesman (Electronics) In Technical Education

Module 1

Basics of AC , AC & DC measurements and Active and Passive Components (20 marks)

a) Basic terms :- Electric charges, Potential difference, Voltage, Current, Resistance. Basics of AC & DC. Various terms such as +ve cycle, -ve cycle, Frequency, Time period, RMS, Peak, Instantaneous value. Single phase and Three phase supply. Terms like Line and Phase voltage/ currents.
b) Insulators, conductors and semiconductor properties.
c) Introduction to electrical measuring instruments:- Importance and classification of meters. MC and MI meters. Range extension, need of calibration.. Multi meter, use of meters in different circuits. Use of CRO, , LCR meter.
d) Active and Passive Components:- Ohm’s law and Kirchhoff’s Law. Resistors; types of resistors, their construction & specific use, color-coding, power rating. Equivalent Resistance of series parallel circuits. Distribution of V & I in
series parallel circuits. Principles of induction, inductive reactance. Types of inductors, applications and energy storage concept. Self and Mutual induction. Series and parallel combination, Q factor. Capacitance and Capacitive Reactance, Impedance. Types of capacitors, Dielectric constant. Series parallel connection of capacitors. Capacitor behaviour with AC and DC. Concept of Time constant of a RC circuit. Concept of Resonance and its application in RC, RL & RLC series and parallel circuit.
e) Working principle of a Transformer, construction, Specifications and types of cores used. Step-up, Step down and isolation transformers with applications. Losses in Transformers. Phase angle, phase relations, active and reactive
power, power factor and its importance

Module 2

Semiconductor materials, components(22 marks)

a) Diodes:-PN Junction, Forward and Reverse biasing of diodes. Interpretation of diode specifications. Forward current and Reverse voltage. Packing styles of diodes. Different diodes, Rectifiers, , Filters. and their role in reducing ripple. Working principles of Zener diode, varactor diode, their specifications and applications.
b) Transistor:-Construction, working of a PNP and NPN Transistors, purpose of E, B & C Terminals. Significance of α, β and relationship of a Transistor. Need for Biasing of Transistor. VBE, VCB, VCE, IC, IB, Junction Temperature, junction capacitance, frequency of operation. Transistor applications as switch and amplifier. Transistor input and output characteristics. Transistor power ratings & packaging styles and use of different heat sinks.
c) Power Electronic Components:- Construction of FET & JFET, difference with BJT. Purpose of Gate, Drain and source terminals and voltage /current relations between them and Impedances between various termin als.
Working of different power electronic components such as SCR, TRIAC, DIAC and UJT. MOSFET, Power MOSFET and IGBT, their types, characteristics, switching speed, power ratings and protection. Differentiate FET with MOSFET.

Module 3

Amplifiers & Oscillators (08 marks)

a) Amplifiers:- Transistor biasing circuits and stabilization Techniques. Classification of amplifiers according to frequency, mode of operation and methods of coupling. Voltage amplifiers – voltage gain, loading effect.
Single stage CE amplifier and CC amplifier. Emitter follower circuit and its advantages. RC coupled amplifier, Distinguish between voltage and power amplifier, Feedback and its types.
b) Oscillators:- Introduction to positive feedback and requisites of an oscillator. Study of Colpitts, Hartley, Crystal and RC oscillators. Types of multi vibrators and study of circuit diagrams.
c) Op – Amp & Timer 555:- Non-inverting voltage amplifier, inverting voltage amplifier, summing amplifier, Comparator, zero cross detector, differentiator, integrator and instrumentation amplifier .
d) Wave shaping circuits:- Clippers and clampers.

Module 4

Introduction to Digital Electronics. (15 marks)

a) Logic gates:-Difference between analog and digital signals. Logic families and their comparison, logic levels of TTL and CMOS. Number systems (Decimal, binary, octal, Hexadecimal). BCD code, ASCII code
and code conversions. Various Logic Gates and their truth tables.
b) Combinational logic circuits:- Half Adder, Full adder, Parallel Binary adders, 2-bit
and four bit full adders. Magnitude comparators. Half adder, full adder ICs and their applications for implementing arithmetic operations. Concept of encoder and decoder. Basic Binary Decoder and four bit binary decoders. Need for multiplexing of data. 1:4 line Multiplexer / De multiplexer
c) Introduction to Flip-Flop:- S-R Latch, Gated S-R Latch, DLatch. Flip-Flop: Basic RS Flip Flop, edge triggered D Flip Flop, JK Flip Flop, T Flip Flop
d) Counters & shift Registers:- Basics of Counters, Basics of Register, types and application of Registers.

Module 5

Computer Hardware & Networking (05 marks)

a) Basic blocks of a computer, Components of desktop and motherboard. Hardware and software, I/O devices, and their working. Different types of printers, HDD, DVD. Various ports in the computer.
b) Concept of word processing:- MS word – Menu bar, standard tool bar, editing, formatting, printing of document etc. Excel – Worksheet basics, data entry and formulae. Moving data in worksheet using tool bars and menu bars, Formatting and calculations, printing worksheet, creating multiple work sheets, creating charts.
c) Computer Networking:- Network features – Network medias Network topologies, protocols- TCP/IP, UDP, FTP, models and types. Specification and standards, types of cables, UTP, STP, Coaxial cables. Network components .

Module6

Electrical protective devices and control circuits (05 marks)

a) Fuse:-Necessity of fuse, fuse ratings, types of fuses, fuse bases
b) Fundamentals of single phase Induction motors, synchronous speed, slip, rotor frequency.

Module 7

Communication Electronics (10 marks)

a) Radio Wave Propagation – principle, fading. Need for Modulation, types of modulation and demodulation. Fundamentals of Antenna, various parameters, types of Antennas & application. Introduction to AM, FM & PM
b) SSB-SC & DSB-SC. FM Generation & Detection. Digital modulation and demodulation techniques, sampling, quantization & encoding. Concept of multiplexing and de multiplexing of AM/ FM/ PAM/ PPM /PWM signals.
c) Fiber optic communication:- Introduction to optical fiber, optical connection and various types optical amplifier, its advantages, properties of optic fiber, testing, losses, types of fiber optic cables and specifications.

Module 8

Microcontroller (8051) (05 marks)

a) Introduction Microprocessor & 8051Microcontrolle:- architecture, pin details & the bus system. Function of
different ICs used in the Microcontroller Kit. Differentiate microcontroller with microprocessor.
b) Interfacing of memory to the microcontroller. Internal hardware resources of microcontroller. I/O port pin configuration. Different variants of 8051 & their resources.

Module 9

Sensors, Transducers and Applications (05 marks)

a) Basics of passive and active transducers:- Role, selection and characteristics. Sensor voltage and current formats.
b) Thermistors/ Thermocouples – Basic principle, salient features, operating range, composition, advantages and
disadvantages.
c) Strain gauges/ Load cell – principle, gauge factor, types of strain gauges.

Module 10

SMPS, Inverter, ups & Solar Power (Renewable Energy System) (05 marks)

a) SMPS;-Switch mode power supplies and their working principles. Various types of chopper circuits
b) Inverter; principle of operation, , power rating, change over period.
c) UPS:- Concept of Uninterrupted power supply. Types of UPS : Off line UPS, On line UPS, Line interactive UPS &
their comparison UPS specifications.
d) Solar Power:- Need for renewable energy sources, Solar energy as a renewable resource. Materials used for solar
cells. Principles of conversion of solar light into electricity. Basics of photovoltaic’s cell. Module, panel and Arrays.
Factors that influence the output of a PV module.

NOTE: – It may be noted that apart from the topics detailed above, questions from other topics prescribed for the educational qualification of the post may also appear in the question paper. There is no undertaking that all the topics above may be covered in the question paper.