[Latest]KWA Operator Syllabus 2026|734,735/2025 Kerala PSC Syllabus

KWA Operator Syllabus 2026 – 734,735/2025 Kerala PSC syllabus: KERALA PUBLIC SERVICE COMMISSION
DETAILED SYLLABUS FOR THE POST OF OPERATOR (DIRECT) & (BY DIRECT RECRUITMENT FROM IN-SERVICE PERSONNEL IN LOWER CATEGORIES OF KERALA WATER AUTHORITY) IN KERALA WATER AUTHORITY
(Category No: 734/2025,735/2025) (TOTAL 100 MARKS). Exam date : 17.08.2026

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Contents

KWA Operator Syllabus 2026 |734,735/2025 Kerala PSC syllabus

Module I- Fundamentals of Electricity (15 Marks)

Basic electricity, Electricity principles, Ground connections, Ohm’s law, Voltage, Current,
Resistance, Power, Energy. Voltmeter, ammeter, Ohm meter Mulitmeter, Conductors &
insulators, Wires, Shielding, Length vs. resistance, Resistor ratings. Fuses & circuit breakers,
Ballast resistor, Stripping wire insulation, cable colour codes and sizes, Resistors in Series
circuits , Parallel circuits and Series- parallel circuits, Electrostatic effects, Capacitors and its
applications, Capacitors in series and parallel.

Batteries & cells, Lead acid batteries & Stay Maintenance Free (SMF) batteries, Magnetic
effects, Heating effects, Thermo- electric energy, Thermisters, Thermo couples, Electrochemical
energy, Photo-voltaic energy, Piezo-electric energy, Electromagnetic induction, Relays,
Solenoids, Primary & Secondary windings, Transformers, stator and rotor coils.. Kirchhoff’s
laws – KCL and KVL.

Module II – Electrostatics and Electromagnetism (5 Marks)

Laws of Electrostatics, Permittivity, Electric Flux, Flux Density, Potential, Potential
Difference – equations and simple problems, Lightning Phenomenon, Potential Gradient,
Dielectrical 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 III – Fundamentals of AC Systems (5 Marks)

Generation of ac voltage, Equation of voltage, Basic terms – amplitude, frequency, cycle,
time period, average value, instantaneous value, rms value, form factor, peak factor –
equations and related simple problems, ac through resistance, inductance and
capacitance, star and delta connections in 3 phase ac systems – line and phase
relationship in star and delta systems.

Module IV – Measurements and measuring instruments (5 Marks)

Various types of electrical measuring instruments – Voltmeter, Ammeter, Energy Meter,
Wattmeter, Single phase and Three phase power measurement, measurement of
resistance, Inductance and Capacitance, Power factor meter, Synchroscope, TOD meter,
CRO, Insulation megger and earth megger, multimeter, CT and PT.

Module V – Safety, First Aid, Batteries and Solar Cell (5 Marks)

Basic safety requirements, electric shock-requirement for avoiding shock, first aid,
installation, care and maintenance of batteries and solar cells, determination of total
number of cells required for a given power requirements.

Module VI – Wiring Accessories (5 Marks)

Various wiring systems, Wires-single strand and multistrand, current ratings. Fuses-cartridge and HRC.
Switches – SPST, SPDT, TPTT, ICDP, ICTP, Toggle switch, Limit switch, safety devices- MCB,
ELCB, RCCB, electrical illumination, Earthing – Pipe and Plate earthing.

Module VII- DC Machines (5 Marks)

DC generator – construction, working, classification, emf equation, wave and lap windings,
characteristics, simple problems
DC motor – construction, working, types, emf equation, torque-simple problems, various starters, speed
control, testing, MG set.

Module VIII- AC Machines (5 Marks)

Transformer-construction, principle, types, emf equation, transformation ratio, losses and efficiency, all
day efficiency-simple problems
Three phase induction motor-principle, construction, types, slip, torque, losses, efficiency, power stages,
speed control, three phase motor starters
Alternators-construction, principle, emf equation, losses and efficiency,
Three phase synchronous motor.
Single phase and FHP motors-single phase induction motor, universal motor, ac series motor,
servomotor, stepper motor, split phase motor

Module IX- Digital Electronics (5 Marks)

Number systems, logic gates-AND, OR, NOT, NAND, NOR, De-morgan’s theorems, half adder, full
adder, flip-flops, shift registers, counters, ADC, DAC, soldering Techniques

Module X – Power Electronics (5 Marks)

Half wave and full wave rectifiers with and without filters, UJT relaxations oscillator, FET, JFET, Triac,
Diac, IGBT, SCR, operation and maintenance of inverter, regulated DC power supply, battery charger,
UPS.

Module- XI (Pump and Fastenings) (10 marks)

Pump Industry in India – leading manufacturers, development in Pump Industry, trends, new
product. Principle of centrifugal pump. Construction and operation of centrifugal pump in series
and parallel. Finding defects and method to recondition centrifugal pump Submersible pumpconstruction, operation and selection of appropriate type. Procedure to recondition, install and
test of submersible pumps. Causes of failures and remedial measures. Priming of pump sets.
Fasteners- Types of screws, nuts, studs & bolts, locking devices, – lock nuts, cotter, split pins,
keys, circlips, lock rings, locks washers and locating where they are used. Washers & chemical
compounds can be used to help secure these fasteners. Function of Gaskets, Selection of
materials for gaskets and packing, oil seals.

Sheet metal – the various common metal Sheets used in Metal shop Sheet metal operations –
Shearing, bending, Drawing, Squeezing.
Sheet metal joints – Hem & Seam Joints Fastening Methods – Riveting, soldering, Brazing.
Fluxes used on common joints. Sheet and wire-gauges. The blow lamp-its uses and pipe
fittings.

Module-XII (I.C Engines) (10 marks)

Principle of Compression-ignition engine, Spark Ignition Engine, differentiates between 4-
stroke and 2 stroke, C.I engine and S.I Engine, Otto cycle and Diesel cycle.

Different type of starting and stopping method of Diesel Engine. Technical terms used in engine,
Engine specification. Cleaning- fuel tank & check leak in the fuel line. Lubrication system –
types, description and advantages of each over others. Filters and oil coolers– their description
functions and method to overhaul for efficient functioning. Defects in pump sets- procedure for
detection of causes & rectification. Purpose and balancing of rotor. Procedure to be followed for
preventive & scheduled maintenance, planning for spares and other stores. Method of install
align and testing of pumps for their serviceability. Concept of tightening torque for different
sizes of bolts.

Module- XIII (Power trasmissios) (10 marks)

Types of pulleys solid, split, “V” groove, step, cone, taper, guided and jockey or rider pulleys,
their functions and uses. Procedure to assemble and dismantle pulleys and impellers from shafts
following safety precautions. AC Motors – related terminology. Purpose, type, construction,
operation, testing for correct functioning, maintenance and industrial applications. Trouble
shooting & protection of induction motor. Different types of valves-their description,
advantages & use. Special pumps & glands used for corrosive fluids. Different gasket cement
used to prevent leakage and advantages of each over the other. Principle of direct reading
pressure and temperature measuring instruments. Method to read and application of pressure
and temperature Measuring instruments. Starters and types of starter switches. Circuit Breakers
and Isolators.

Module- XIV .(Fluid valves) (10 marks)

Application of Gear pump- Internal & External, single acting, double acting &
Double ended cylinder; Directional control valves-2/2, 3/2, 4/2, 4/3 way valve,
Pressure relief valve, Non return valve, Flow control valve used Pneumatic Symbols,
and function of air Reciprocating Compressor. Function of Air service unit
(FRL-Filter, Regulator & Lubricator) Classification of rotary pumps- Construction and
operation- repairing procedure. Brief description of turbine & stage pumps, positive
displacements and their advantages. Meaning of priming and its effect. Installation
Techniques of rotary pump- procedure, tools and equipment required. Pipes and pipe fittings.
Pipe Joints. Pipe Gauging.

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Books for KWA operator Exam

OPERATOR (KWA) RANK FILE 2026 VOL.1 (ELECTRICAL PART)

OPERATOR (KWA) RANK FILE 2026 VOL.2 (MECHANICAL PART)

OPERATOR (KWA) RANK FILE