Syllabus for Multiple choice objective type written test for the posts of Electrician and Technician-III.

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Government of Jammu and Kashmir

J&K Services Selection Board

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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

                                                                                                                                                     

Electrical Appliances

Electricity in Home, Design for heating element, Electrical appliances, Electric iron, room coller, electric brooders.

 Secretary, Services Selection Board

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