Table of Contents
Kerala PSC Draftsman Grade I (Electrical) exam for Kerala Water Authority is scheduled on 3rd December 2025 (Wednesday). The exam will be conducted Online/OMR for 100 marks in English. The official syllabus and exam pattern have been released. In this blog, we provide the detailed syllabus, modules, and marks distribution below. Explore now!
Kerala PSC KWA Draftsman Grade 1 Electrical Exam 2025 Highlights
| Name | Event |
| Conducted By | Kerala PSC |
| Name of Organization | Kerala Water Authority |
| Name of Post | Draftsman Grade 1 Electrical |
| Category Number | 031/2024 |
| Method of Appointment | Direct Recruitment |
| Scale Of Pay | As per notification |
| Number of Vacancies | As per notification |
| Mode of Exam | Offline |
| Exam Date | December 03, 2025 |
| Admit Card | November 19, 2025 |
| Official website | www.keralapsc.gov.in |
Download Kerala PSC KWA Draftsman Grade 1 Electrical Syllabus 2025 PDF
1: Between the period of 1858-1947, how many Viceroys ruled over India?
Candidates appearing for the Kerala PSC Draftsman Grade I (Electrical) exam can now access the official detailed syllabus PDF. This PDF provides a clear breakdown of all exam modules, including electrical fundamentals, semiconductor devices, AC/DC machines, digital electronics, microcontrollers, instrumentation, wiring systems, and more, along with their score. Downloading the PDF now!
Prepare for Kerala PSC Technical Exams with Entri
സർക്കാർ ജോലി എന്ന സ്വപ്നം ഇനി സ്വപ്നം മാത്രമല്ല! Join Kerala's Top-rated PSC Coaching Programs
Join NowKerala PSC KWA Draftsman Grade 1 Electrical Exam Pattern 2025
The Kerala PSC KWA Draftsman Grade 1 (Electrical) Exam 2025 is scheduled to be held on December 3, 2025. The exam will be conducted online/OMR and will consist of 100 multiple-choice questions totaling 100 marks. Candidates will have 1 hour 30 minutes to complete the test. The question paper will be in English only, and each question carries 1 mark.
A 1/3 negative marking is applicable for each wrong answer, so careful answering is advised. The exam will cover topics from 10 detailed modules, including Electricity, Electronics, AC/DC Machines, Digital Systems, Microcontrollers, Communication, and Safety.
| Module | Topics | Marks |
|---|---|---|
| 1 | Fundamentals of Electricity, Electrostatics & Electromagnetism | 10 |
| 2 | Semiconductor Diodes, Transistors, Power Electronics, Power Supply | 10 |
| 3 | Fundamentals of AC Systems, Safety, First Aid, Batteries & Solar Cells | 10 |
| 4 | Operational Amplifiers, Oscillators, Timers, Multivibrators | 10 |
| 5 | Wiring Accessories, Electrical Safety Devices | 10 |
| 6 | Digital Electronics, Logic Gates, Microcontroller (8051), Logic Families | 10 |
| 7 | DC & AC Machines, Transformers, Motors, Alternators | 10 |
| 8 | Television, Communication Systems, Antennas | 10 |
| 9 | Measurements & Measuring Instruments, Electronic Instruments | 10 |
| 10 | Microcontroller – Architecture, Memory, Ports, Timers, Serial Communication | 10 |
Kerala PSC KWA Draftsman Grade 1 Electrical Detailed Syllabus 2025
Candidates appearing for the Kerala PSC Draftsman Grade I (Electrical) exam can access the complete detailed syllabus here. The syllabus includes all 10 modules with marks distribution, covering fundamentals of electricity, semiconductors, AC/DC machines, digital electronics, microcontrollers, and more.
Module 1: Fundamentals of Electricity (10 Marks)
- Voltage, current, resistance, energy, power – definitions and units.
- Ohm’s law – statement, simple problems related to Ohm’s law, power, and energy.
- Resistance in series and parallel – simple problems.
- Kirchhoff’s laws – KCL and KVL.
- Electrostatics and Electromagnetism:
-
-
Laws of electrostatics, permittivity, electric flux, flux density, potential, potential difference – equations and simple problems.
-
Lightning phenomenon, potential gradient, dielectric strength, capacitors in series and parallel, energy stored in a capacitor.
-
Coulomb’s law, permeability, magnetic flux, flux density, reluctance, MMF, Faraday’s law of electromagnetic induction, Lenz’s law.
-
Self-inductance, mutual inductance, energy stored in an inductor, Fleming’s laws.
-
Module 2: Semiconductor Diodes & Transistors (10 Marks)
- Semiconductors: Energy band diagram of conductors, insulators, semiconductors, intrinsic & extrinsic semiconductors, doping, P & N type, majority & minority carriers.
- PN Junction: Drift & diffusion current, depletion layer, potential barrier, forward & reverse bias, breakdown – Zener & avalanche.
- VI characteristics, static and dynamic resistance.
- Types of Diodes: Power, Zener, varactor, tunnel diode; DC load line analysis; Half-wave, Full-wave, Bridge rectifiers; Capacitor filter; Zener regulator circuits.
- Transistors: CB, CE, CC configurations; current relations; input & output characteristics; input & output resistance; current gain, voltage gain, leakage current.
- Transistor biasing techniques, DC load line, fixing operating point, stabilization, single-stage CE amplifier.
- FET & MOSFET: JFET (P & N channel), comparison with BJT, parameters; MOSFET types – depletion & enhancement.
- Power Electronics: UJT, SCR, DIAC, TRIAC, inverter operation, DC motor drives, LVDT, induction & dielectric heating, integrated circuits (SMD).
- Power Supply: Voltage regulation – line & load regulation, shunt & series regulators, fixed & variable power supplies, protection circuits, SMPS, UPS (online & offline).
Module 3: Fundamentals of AC Systems (10 Marks)
- Generation of AC voltage, voltage equation, basic terms – amplitude, frequency, cycle, time period, average, instantaneous, RMS, form factor, peak factor.
- AC through resistance, inductance, and capacitance.
- Star and delta connections in 3-phase AC systems, line & phase relationships.
- Safety, First Aid, Batteries & Solar Cells: Basic safety, avoiding electric shock, first aid, battery installation & maintenance, solar cell setup, calculation of total number of cells for given power.
Module 4: Operational Amplifiers (10 Marks)
- Differential amplifier, op-amp parameters – virtual ground, input offset voltage/current, bias current, output offset voltage, CMRR, slew rate.
- Ideal & practical op-amp characteristics.
- Applications: Inverting/non-inverting amplifiers, voltage follower, comparator, difference & summing amplifier, integrators, differentiators, zero crossing detector, Schmitt trigger, window detector, logarithmic & antilog amplifier, instrumentation amplifier.
- DAC & ADC: R-2R ladder DAC, counter type, dual slope integration, successive approximation ADC, Flash ADC.
- Half-wave & full-wave precision rectifiers, active filters (LPF, HPF, BPF), RC phase shift & Wien bridge oscillators, astable & monostable multivibrators, triangular wave generator.
- PLL principle – operation, lock & capture range, applications, VCO.
- IC 555 timer – working, monostable & astable multivibrators.
- Oscillators: Barkhausen criterion, RC & LC oscillators, Hartley, Colpitt, crystal oscillator, multivibrators – bistable, monostable, astable, Schmitt trigger, UTP, LTP.
Module 5: Wiring Accessories & Power Electronics (10 Marks)
-
Wiring Systems: Single & multi-strand wires, current ratings, fuses (cartridge & HRC), switches (SPST, SPDT, TPTT, ICDP, ICTP, toggle, limit), safety devices – MCB, ELCB, RCCB, illumination, earthing (pipe & plate).
-
Power Electronics: Half & full-wave rectifiers (with/without filters), UJT relaxation oscillator, FET, JFET, TRIAC, DIAC, IGBT, SCR, inverter operation & maintenance, regulated DC power supply, battery charger, UPS.
Module 6: Digital Electronics (10 Marks)
- Number Systems: Decimal, binary, octal, hexadecimal; conversions; gray code, BCD code.
- Boolean Algebra: Theorems, De Morgan’s laws.
- Logic gates – NOT, AND, OR, XOR, NAND, NOR, X-NOR.
- Adders: Half & full adder. Flip-Flops: RS, gated, JK. Counters & shift registers.
- Microcontroller: 8051 architecture, features, registers.
- Logic families: SSI, MSI, LSI, VLSI, ULSI; TTL, Schottky TTL, ECL, CMOS; positive/negative logic, fan-in, fan-out, noise margin, propagation delay, power dissipation.
- Semiconductor memory: ROM, RAM, static & dynamic RAM, Flash ROM, NVRAM, SDRAM, EDO RAM, optical & magnetic bubble memory.
Module 7: DC & AC Machines (10 Marks)
- DC Machines: Generators – construction, working, types, EMF equation, wave & lap windings, characteristics, simple problems. Motors – construction, working, types, torque, EMF equation, starters, speed control, testing, MG set.
- AC Machines: Transformers – construction, principle, types, EMF equation, transformation ratio, losses, efficiency, all-day efficiency, simple problems.
- Three-phase induction motors – principle, construction, types, slip, torque, losses, efficiency, power stages, speed control, starters.
- Alternators – construction, principle, EMF equation, losses, efficiency.
- Three-phase synchronous motor. Single-phase & FHP motors, universal motor, AC series motor, servomotor, stepper motor, split-phase motor.
Module 8: Television & Communication Systems (10 Marks)
- Television: Luminance, chrominance, additive & subtractive mixing of colors, color TV camera, Delta gun, Trinitron picture tubes. NTSC, SECAM, PAL systems – advantages/disadvantages. PAL-D decoder, frequency interleaving, PAL-D color TV receiver, AFT, color encoder/killer, HDTV, digital TV.
- Satellite TV: Antenna, LNA, LNB, FEC, digital satellite receiver. CCTV, MATV, CATV. Video recording: VHS, U-matic, VCD, DVD, MPEG.
- Communication Systems: EM waves, propagation, modulation (AM, FM, PM), detection, superheterodyne receiver, bandwidth, PAM, PCM, ASK, FSK, BPSK, QPSK, Offset PSK, BFSK, MSK.
- Noise – types, SNR improvement. Antennas: radiation concepts, patterns, gain, directivity, aperture, beamwidth, radiation resistance. Types: half-wave dipole, folded dipole, Yagi-Uda, Marconi, rhombic, parabolic, end-fire & broadside arrays.
Module 9: Measurements & Measuring Instruments (10 Marks)
- Electrical Instruments: Voltmeter, ammeter, energy meter, wattmeter, single & three-phase power measurement, resistance, inductance, capacitance, power factor meter, synchroscope, TOD meter, CRO, insulation & earth megger, multimeter, CT & PT.
- Electronic Instruments: Analog & digital meters, Wheatstone bridge, Q meter, CRO, signal generator, recorders, data acquisition systems.
Module 10: Microcontroller (10 Marks)
- 8051 Microcontroller: Features, architecture, memory organization, program & data memory, internal RAM structure, B register, accumulator, register banks, bit-addressable area, special function registers, program status word, flags.
- Ports architecture, timer/counter – modes.
- Serial communication – modes, SBUF, interrupts.
- External ROM & RAM interfacing, addressing modes.
How to Download Kerala PSC Draftsman Grade 1 Electrical Syllabus 2025
- Visit the Kerala PSC official website – https://www.keralapsc.gov.in
- Go to the Recruitment section.
- Click on Syllabus.
- Select Post-wise Syllabus.
- Search for Draftsman Grade 1 (Electrical) – Kerala Water Authority.
- Click on the Syllabus link to open the PDF.
- Download and save the syllabus for future reference.
