JELET Syllabus Electrical Technology:
Kirchoff’s voltage and current laws; Star delta transformations – Simple problems on all topics.
Concept & significance of RMS value; peak value; average value; crest factor and form factor of sinusoidal voltage / current – equation of instantaneous value of sinusoidal voltage /current – simple problems on all.
AC Series Circuit:
R – L & R – C AC series circuit (no deduction; only the expression of voltage; current & power for sinusoidal sources) power factor; power triangle simple problems.
Storage Cell, Transformer, Motors Etc:
Basic Principle of Storage Cell; DC motors; Transformer; AC generators & motors (No deductions & problems)
Concept of magnetic circuit; definitions and units of magnetic flux; mmt and reluctance; analogy with electrical circuit; simple problems
Need for motor starter mentioning some names useful for DC motors and AC motors
Motors for Industrial Uses:
Simple Electrical circuit for motor installation using block diagram of different components
Power Generation, Transmission & Distribution:
Brief idea about the operational principle of voltage stabilizer and UPS system (no description of internal circuit)
Simple idea house wiring starting from commencement of supply; using necessary diagram; role of fuses / MCB fault finding & earthing concept
Types of lighting scheme and factors considered for designing lightning schemes i.e. illumination level; uniformity of illumination; colour of light; glare; mounting height; spacing luminaries; colour of surrounding walls etc
Wattmeter and Meggar:
Uses & connection diagram of Wattmeter – Use of Meggar with circuit diagram
Electrical Energy Measurement:
Electrical energy measurement (no mathematical deduction & description of apparatus) – circuit diagram for single phase energy – meter connection.