Coal India Limited (CIL) 2022 Syllabus for Electrical Engineering

Coal India Limited Syllabus for Electrical Engineering Paper I

Tentative dates of Computer Based Online Test (CBT):
- November2022
There will be two CBT papers i.e Paper-I & Paper-II which will carry 100 marks each and will be multiple choice questions (MCQ)
Paper-I includes subjects i.e:
- General Knowledge/Awareness
- Reasoning
- Numerical Ability
- General English
Paper-II includes
- Professional Knowledge (Discipline related)
Each question will carry 1 mark and there is no penalty for wrong answer.
The qualifying marks for the Computer Based Online Test will be as under:
- GENERAL (UR) / EWS: Minimum 40 marks in each paper
- OBC (Non-Creamy Layer): Minimum 35 marks in each paper
- SC / ST / PwD: Minimum 30 marks in each paper

Coal India Limited Syllabus 2019 for Electrical Engineering Paper II

Electric circuits:
- Network graph, KCL, KVL, Node and Mesh analysis, Transient response of dc and ac networks
- Sinusoidal steady‐state analysis, Resonance, Passive filters, Ideal current and Voltage sources
- Thevenin’s Theorem, Norton’s theorem ,Superposition theorem,Maximum power transfer theorem
- Two‐port networks, Three phase circuits, Power and power factor in ac circuit .
Signals and Systems:
- Representation of continuous and discrete‐time signals, Shifting and scaling operations
- Linear Time Invariant and Causal systems, Fourier series representation of continuous periodic signals
- Sampling theorem, Applications of Fourier Transform, Laplace Transform and z-Transform
Electrical and Electronic Measurements:
- Bridges and Potentiometers, Measurement of voltage, current, power, energy and power factor
- Instrument transformers, Digital voltmeters and multimeters, Phase, Time and Frequency measurement
- Oscilloscopes, Error analysis.
Analog & Digital Electronics:
- Characteristics of diodes, BJT, MOSFET; Simple diode circuits: clipping, clamping, rectifiers;
- Amplifiers: Biasing, Equivalent circuit and Frequency response;
- Oscillators and Feedback amplifiers; Operational amplifiers: Characteristics and applications; Simple active filters, VCOs and Timers, Combinational and Sequential logic circuits, Multiplexer, Demultiplexer, Schmitt trigger, Sample and hold circuits, A/D and D/A converters,
- 8085 Microprocessor: Architecture, Programming and Interfacing.
Power Electronics:
- Characteristics of semiconductor power devices: Diode, Thyristor, Triac, GTO, MOSFET, IGBT; DC to DC conversion: Buck, Boost and Buck-Boost converters; Single and three phase configuration of uncontrolled rectifiers, Line commutated thyristor based converters, Bidirectional ac to dc voltage source converters, Issues of line current harmonics, Power factor, Distortion factor of ac to dc converters, Single phase and three phase inverters, Sinusoidal pulse width modulation
Control Systems:
- Mathematical modeling and representation of systems, Feedback principle, transfer function, Block diagrams and Signal flow graphs, Transient and Steady‐state analysis of linear time invariant systems, Routh-Hurwitz and Nyquist criteria, Bode plots, Root loci,Stability analysis, Lag, Lead and Lead‐Lag compensators; P, PI and PID controllers; State space model, State transition matrix.
Power Systems:
- Power generation concepts, ac and dc transmission concepts, Models and performance of transmission lines and cables, Series and shunt compensation, Electric field distribution and insulators, Distribution systems, Per‐unit quantities, Bus admittance matrix, Gauss Sideline and Newton-Raphson load flow methods, Voltage and Frequency control, Power factor correction, Symmetrical components, Symmetrical and unsymmetrical fault analysis, Principles of over‐current, differential and distance protection; Circuit breakers,System stability concepts, Equal area criterion.
Electrical Machines:
- Single phase transformer: equivalent circuit, phasor diagram, open circuit and short circuit tests, regulation and efficiency; Three phase transformers: connections, parallel operation; Auto‐transformer, Electromechanical energy conversion principles, DC machines: separately excited, series and shunt, motoring and generating mode of operation and their characteristics, starting and speed control of dc motors; Three phase induction motors: principle of operation, types, performance, torque-speed characteristics, no-load and blocked rotor tests, equivalent circuit, starting and speed control; Operating principle of single phase induction motors; Synchronous machines: cylindrical and salient pole machines, performance, regulation and parallel operation of generators, starting of synchronous motor, characteristics; Types of losses and efficiency calculations of electric machines.
Electromagnetic fields:
- Coulomb's Law, Electric Field Intensity, Electric Flux Density, Gauss's Law, Divergence, Electric field and potential due to point, line, plane and spherical charge distributions,Effect of dielectric medium, Capacitance of simple configurations, Biot‐Savart’s law,Ampere's law, Curl, Faraday’s laws, Lorentz force, Inductance, Magnetomotive force,Reluctance, Magnetic circuits,Self and Mutual inductance of simple configurations.