CWC 2026 Online Examination — Post Code 05 — Assistant Manager (Engineering) — Electrical

CWC 2026 written examination — official post code 05: Assistant Manager (Engineering) — Electrical

The CWC 17 October 2026 advertisement specifies an online examination of 200 objective questions (200 marks) plus two English descriptive questions (30 marks). Total: 202 questions, 230 marks, 180 minutes. The examination date is yet to be notified.

Section-wise test blueprint (separately timed)

Scoring, qualifying rules and next stage

The Professional/Subject Knowledge section (where applicable) and the descriptive English paper have minimum qualifying thresholds: UR 40% and OBC/EWS/SC/ST/PwBD/Ex-Servicemen 35%. These are qualifying thresholds, not final selection cutoffs. Separate sectional and aggregate cutoff scores may be applied by CWC. Only objective-test answers attract a penalty of one-quarter of the question marks for an incorrect response; blank responses attract no penalty. For codes 01–06, shortlisted candidates undergo document verification and interview (maximum shortlist ratio 1:5); interview has 30 marks and the final online-test/interview weighting is 85:15. Interview minimums: UR/EWS 50%, OBC 45%, SC/ST/PwBD/Ex-Servicemen 40%. All section times are separate; the total paper lasts 180 minutes. Official examination date has not been announced.

Official subject syllabus (indicative, as published by CWC)

A. 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 circuits.

B. 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 law, Lorentz force
• Inductance, Magnetomotive force, Reluctance, Magnetic circuits
• Self and Mutual inductance of simple configurations.

C. 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.

D. 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.

E. 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-Seidel 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.

F. Control Systems

• Mathematical modelling 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.

G. 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.

H. Analog and 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
• 8085Microprocessor: Architecture, Programming and Interfacing.

I. 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.

Official source and changes

Official detailed advertisement: https://cwceportal.com/Careers/Guidelines/45/45_Detailed%20Advertisement_7109fe46-7e18-4b68-84a5-8b6d6708e571.pdf (pages 12–19). CWC may revise the exam structure and will publish further details in its information handout/call letter. Watch https://cwceportal.com/careers or https://cewacor.nic.in/ for confirmed exam date and call letter.