JKSSB Junior Engineer (Electrical): syllabus, exam pattern and mock tests
The notified syllabus for the JKSSB Junior Engineer (Electrical) written test, unit by unit, with marks. In the app every syllabus line has notes, past JKSSB and SSC questions, chapter tests and full mocks in this exact pattern.
120 marks120 minutes−0.25 per wrong answer2 full mock tests12 chapter tests
Start preparing for Junior Engineer (Electrical)
Syllabus
Electric Circuits and Fields15 marks
- 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
Control Systems10 marks
- Basic control system components; block diagrammatic description, reduction of block diagrams
- Open loop and closed loop (feedback) systems and stability analysis of these systems
Electrical and Electronic Measurements15 marks
- 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
Electronic Devices and Circuits10 marks
- 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
Digital Electronics and Microprocessor10 marks
- Number systems: Binary, decimal, octal, hexadecimal, BCD number systems and their conversions
- Binary and hexadecimal addition, subtraction, multiplication, 1's and 2's complement methods of addition/subtraction
- Boolean algebra, minimization of Boolean functions; logic gates
- Digital IC families (DTL, TTL, ECL, MOS, CMOS)
- Combinatorial circuits: arithmetic circuits, code converters, multiplexers, decoders, PROMs
- Sequential circuits: latches and flip-flops, counters and shift-registers
- ADCs, DACs. Semiconductor memories
- Microprocessor (8085): architecture, instruction set, programming, memory and I/O interfacing
- Study of peripheral chips-8251, 8155, 8257, 8259
Power Electronics and Drives10 marks
- 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
Electrical Machines25 marks
- 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
Power Systems25 marks
- 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