Syllabus for Multiple choice objective type written test for the posts of Electrician and Technician-III.
Government of Jammu and Kashmir
J&K Services Selection Board
Sub: Syllabus for Multiple choice objective type written test for the posts of Electrician and Technician-III.
Unit-I 10 MARKS
Safety Precautions and laws of Resistance
Safety Precautions, Precautions to avoid electric shock, Graphical symbols, Fuse and its types.
Electric Circuit, Definitions of e.m.f., P.D., current, resistance; Ohm’s Law: Series and parallel circuit.
Conductors, Insulators, Wires and cables, Various types of wires, Uses of different types of wires.
Unit-II 10 MARKS
Work, Power, Energy, Magnetism and Electromagnetism
Power and Energy definition; Energy consumption; Pump and efficiency.
Electromagnet, Comparison Induced E.M.F. and current; Faraday’s Laws of Electromagnetic Induction.
Unit-III 10 MARKS
Cells, Batteries and DC Generators
Secondary cell and Primary cell; Internal construction of battery; Parts of secondary cell; Precautions, charging battery from A.C. Supply; First charge on New Battery. Examples, Capacity and Efficiency of battery; Defects in battery.
Main parts of D.C. machine Slip ring and commutator; Ordinary generators. Generator fails to build up voltage.
Defects in motors, motor characteristics.
Unit-IV 10 MARKS
House Wiring and A.C. Circuits
Wiring System; How electric supply comes to our houses or factories? Types of wiring; I.S.I. Rules megger testing; Wiring Diagrams. House Wiring Estimating.
Advantages of A.C. over D.C. and D.C. over A.C. Definitions, lagging and leading of currents.
Unit-V 10 MARKS
Polyphase and Transformers
Star and Delta Connection – relation between line current and voltage with phase current and voltage.
Construction, types; their comparison, advantages parts, principle; powers transformers – Conservator, Breather, Temperature gauge, Explosions, Vent.
How to Design Small Power Transformer.
Unit-VI 10 MARKS
A.C. Three-Phase Motors and A.C. Single-Phase Motors
Principle of action; Formulae, why starter is used for starting; D.O.L. starter, Star Delta Starter.
Why motor is not self-started-principle and working: Types – Split phase motor.
Unit-VII 10 MARKS
Winding and Electrical Instruments
A.C. winding, Dismantle operation.
Connection of voltmeter, Ammeter watt-meter; Megger, Earth tester; Energy meter.
Unit-VIII 10 MARKS
Illumination and Conversion for A.C. to D.C.
Sodium Vapour lamp; H.P.V.M. lamps, fluorescent tube; Double tube circuit.
Use of A.C. and D.C., rectifier Construction and uses – metal rectifiers, mercury arc rectifier.
Unit-IX 10 MARKS
Generation, Transmission and Distribution of Electricity.
Types of Power Stations; Overhead lines system, material and IE Rules.
Unit-X 10 MARKS
Electricity in Home, Design for heating element, Electrical appliances, Electric iron, room coller, electric brooders.
Secretary, Services Selection Board