JKSSB JE Syllabus and Exam Pattern 2025, Subject-wise Syllabus

2 hours

• Basic concepts: Concepts of resistance, 
• inductance, 
• capacitance and various factors effecting them.,
•  Circuit laws: ohms law KCL, 
• KVL, node and mesh analysis, 
• resonance,
•  ideal current and voltage sources, 
• Source conversions: Thevenin’s, 
• Norton’s and Superposition and Maximum Power Transfer theorems, 
• Simple Circuit solution using network theorems. 
• Three phase circuits; 
• Ampere’s and Biot-Savart’s laws; 
• inductance; 
• dielectrics; 
• capacitance.

• Single phase transformer – equivalent circuit, phasor diagram, tests, regulation and efficiency; 
• three phase transformers – connections, parallel operation; autotransformer, Energy conversion principles, Electro-mechanical energy conversion ; 
• DC machines–types, windings, generator characteristics, armature reaction and commutation, starting and speed control of motors; 
• three phase induction motors– principles, types, performance characteristics, starting and speed control; 
• single phase induction motors; 
• synchronous machines – performance, regulation and parallel operation of generators, motor starting, characteristics and applications; 
• servo and stepper motors. Braking of DC and AC motors

• Basic power generation concepts; 
• transmission line models and performance; 
• cable performance, insulation; corona and radio interference; distribution systems; 
• power factor correction; economic operation; symmetrical components; 
• principles of over-current, differential and distance protection; 
• Generator, feeder, transformer and bus-bar protection; Lightning protection; 
• solid state relays and circuit breakers; 
• Sub-Station Practices, Load frequency control, Tariffs, Earthing. 
• Utilisation of Electrical energy: Illumination, electrical heating and welding, electroplating.

• Basic control system components; 
• block diagrammatic description, reduction of block diagrams. 
• Open loop and closed loop (feedback) systems and 
• stability analysis of these systems.

• Bridges and potentiometers; 
• PMMC, moving iron, dynamometer and induction type instruments; Extension of range, measurement of voltage, current, power, energy and power factor; 
• instrument transformers; 
• digital voltmeters and multimeters; 
• phase, time and frequency measurement; 
• Q-meters; oscilloscopes. 
• Transducers: measurement of displacement, flow and temperature, Megger. 
• Measurements of active and reactive power, Measurement of Energy.

• Semiconductor power diodes, transistors, thyristors, triacs and MOSFETs – static characteristics and principles of operation;
•  triggering circuits; 
• phase control rectifiers; 
• bridge converters – fully controlled and half controlled; 
• Choppers and Inverters; 
• concepts of adjustable speed dc and ac drives.

• Energy bands in silicon, intrinsic and extrinsic silicon. Carrier transport in silicon: diffusion current, drift current, mobility, and resistivity. 
• p-n junction diode, Zener diode, tunnel diode, BJT, JFET, MOS capacitor, MOSFET, LED, avalanche photo diode 
• Small Signal Equivalent circuits of diodes, BJTs, MOSFETs. 
• Simple diode circuits, clipping, clamping, rectifier. 
• Biasing and bias stability of transistor and FET amplifiers. 
• Single-and multi-stage, tuned voltage, operational, feedback, and power amplifiers. 
• Frequency response of amplifiers. Simple op-amp circuits. 
• Filters. 
• Sinusoidal oscillators; criterion for oscillation; single-transistor and op-amp configurations. 
• Function generators and wave-shaping circuits, 555 Timers IC and its applications. 
• Power supplies