DSSSB Junior Engineer Section Officer (Electrical) Syllabus 2026 - Complete Tier-I & Tier-II Subject-wise Syllabus | Official Notification

Delhi Subordinate Services Selection Board – Junior Engineer Section Officer (Electrical): Complete Tier-I & Tier-II Syllabus 2026

Reproduced from the official DSSSB syllabus notification for the post of Junior Engineer Section Officer (Electrical). This is the combined Tier-I and Tier-II indicative syllabus: General Topics for Tier-I Section A, followed by the subject-specific engineering topics applicable to Tier-I Section B and Tier-II Parts I and II. All headings and topic lists are taken from the Board’s published document.

At a glance

General Topics – Tier-I, Section A

GENERAL AWARENESS

ABILITY OF THE CANDIDATE'S GENERAL AWARENESS OF THE ENVIRONMENT AROUND HIM/HER AND ITS APPLICATION TO SOCIETY. THE QUESTIONS WILL BE DESIGNED TO TEST KNOWLEDGE OF CURRENT EVENTS AND OF SUCH MATTER OF EVERYDAY OBSERVATION AS MAY BE EXPECTED OF AN EDUCATED PERSON. THE TEST WILL ALSO INCLUDE QUESTIONS RELATING TO HISTORY, POLITY, CONSTITUTION, SPORTS, ART & CULTURE GEOGRAPHY, ECONOMICS, EVERYDAY SCIENCE, SCIENTIFIC RESEARCH NATIONAL/INTERNATIONAL ORGANIZATIONS /INSTITUTIONS ETC

General Intelligence & Reasoning Ability

GENERAL INTELLIGENCE & REASONING ABILITY INCLUDES QUESTIONS OF BOTH VERBAL AND NON-VERBAL TYPES. TEST MAY INCLUDE QUESTIONS ON ANALOGIES, SIMILARITIES, DIFFERENCES, SPACE VISUALIZATION PROBLEM SOLVING, ANALYSIS, JUDGMENT, DECISION MAKING, VISUAL MEMORY, DISCRIMINATION. OBSERVATION, RELATIONSHIP, CONCEPTS ARITHMETICAL REASONING, VERBAL AND FIGURE CLASSIFICATION ARITHMETICAL NUMBER SERIES ETC

Arithmetical & Numerical Ability

AND NUMERICAL ABILITIES WILL COVER NUMBER SYSTEMS INCLUDING QUESTIONS ON SIMPLIFICATION, DECIMALS, DATA INTERPRETATION FRACTIONS, L.C.M., H.C.F., RATIO & PROPORTION, PERCENTAGE, AVERAGE PROFIT & LOSS, DISCOUNT, SIMPLE & COMPOUND INTEREST MENSURATION, TIME & WORK, TIME & DISTANCE, TABLES & GRAPHS ETC

Hindi Language & Comprehension

UNDERSTANDING AND COMPREHENSION OF THE HINDI LANGUAGE. IN ADDITION TO THIS, QUESTIONS ON ITS VOCABULARY, GRAMMAR SENTENCE STRUCTURE, SYNONYMS, ANTONYMS AND ITS CORRECT USAGE ETC. WOULD ALSO BE COVERED

English Language & Comprehension

Subject-Specific Topics for the post of Junior Engineer Section Officer (Electrical) (Tier-I Section B & Tier-II)

APPLIED CHEMISTRY

• a PROBLEM BASED ON VOLUMETRIC GRAVIMETRIC ANALYSIS
• + ANALYSIS AND TREATMENT OF WATER
• a FUEL AND COMBUSTION
• 4 CORROSION AND LUBRICANT
• a ATOMIC STRUCTURE AND BONDING

APPLIED PHYSICS

• S ELECTROSTATICS
• + CAPACITORS
• + DCCIRCUITS
• + ELECTROMAGNETISM
• a SEMI-CONDUCTOR PHYSICS
• MODERN PHYSICS

APPLIED MATHEMATICS

• 4 ALGEBRA
• {. DETERMINANTS
• 4 MATRICES
• + CO-ORDINATE GEOMETRY OF TWO DIMENSIONS
• a VECTORS
• `* DIFFERENTIAL CALCULUS
• + INTEGRAL CALCULUS
• + DIFFERENTIAL EQUATIONS
• +» COMPLEX NUMBERS

APPLIED MECHANICS

• + INTRODUCTION: CONCEPT OF ENGINEERING MECHANICS, ITS
• IMPORTANCE AND NECESSITY. GIVING SUITABLE EXAMPLES ON BODIES
• AT REST AND MOTION, CONCEPT OF RIGID BODIES
• 4 LAWS OF FORCES
• ¢ MOMENTS
• + CENTRE OF GRAVITY
• 4 LAWS OF MOTION
• + FRICTION
• 4 SIMPLE LIFTING MACHINES
• F|prDAunNTArs OF ELEcrRICAL ENGINEERING
• ® D C CIRCUITS
• + ELECTROMAGNETISM
• S MAGNETIC CIRCUITS
• + ELECTROMAGNETIC INDUCTION
• a D C TRANSIENTS

ENGINEERING DRAWING

• INTRODUCTION
• LETTERING TECHNIQUES AND PRACTICE
• DIMENSIONING
• SCALES
• CONSTRUCTION OF CURVES

ELECTRICAL ENGINEERING MATERIALS

• + CONDUCTING MATERIALS
• ¢ SEMICONDUCTING MATERIALS
• + INSULATING MATERIALS
• + MAGNETIC MATERIALS

BASICS OF ELECTRICAL ENGINEERING

• + FUNDAMENTALS OF ELECTRIC CIRCUITS, KIRCHHOFF'S LAWS, MESH
• ANALYSIS, NODE ANALYSIS, CLASSIFICATION OF NETWORK ELEMENTS
• THEVENIN'S THEOREM, NORTAN'S THEOREM MAXIMUM POWER
• TRANSFER THEOREM, SUPERPOSITION THEOREM
• + SINGLE PHASE AC CIRCUITS, AVERAGE AND EFFECTIVE VALUES OF
• SINUSOIDS, SOLUTION OF R,L,C SERIES CIRCUITS, THE J OPERATOR
• COMPLEX REPRESENTATION OF IMPEDANCES, PHASOR DIAGRAM
• CONCEPT OF POWER FACTOR, POWER FACTOR IMPROVEMENT, POWER IN
• COMPLEX NOTATION, SOLUTION OF PARALLEL AND SERIES-PARALLEL
• CIRCUITS, RESONANCE. INTRODUCTION TO BALANCE THREE PHASE AC
• CIRCUITS
• + AMPERE'S CIRCUITAL LAW. B-H CURVE, SOLUTION OF MAGNETIC
• CIRCUITS, HYSTERESIS AND EDDY CURRENT LOSSES. RELAYS AS AN
• APPLICATION OF MAGNETIC FORCE. TRANSFORMERS- CONSTRUCTION
• E.M.F. EQUATION, RATINGS, PHASOR DIAGRAM FOR NO LOAD AND FULL
• LOAD, EQUIVALENT CIRCUIT, REGULATION AND EFFICIENCY
• CALCULATIONS, OPEN CIRCUIT AND SHORT CIRCUIT TESTS
• INTRODUCTION TO AUTO-TRANSFORMER
• + INTRODUCTION TO ELECTROMECHANICAL ENERGY CONVERSION, DC
• MOTORS- CONSTRUCTION, E.M.F. AND TORQUE EQUATIONS
• CHARACTERISTICS OF DC GENERATORS AND MOTORS, SPEED CONTROL
• OF DC MOTORS. DC MOTOR STARTER- WORKING PRINCIPLE, RATINGS
• INTRODUCTION TO THREE PHASE INDUCTION MOTOR, INTRODUCTION TO
• ALTERNATOR AND SYNCHRONOUS MOTOR AND THEIR APPLICATIONS
• a PMMC INSTRUMENTS. SHUNTS AND MULTIPLIERS, MULTI-METERS
• MOVING IRON AMMETERS AND VOLTMETERS, DYNAMOMETER
• WATTMETER, AC WATT-HOUR METERS, EXTENSION OF INSTRUMENT
• RANGES

BASIC ELECTRONICS

• + APPLICATIONS OF ELECTRONICS IN DIFFERENT FIELDS. ACTIVE AND
• PASSIVE COMPONENTS, VOLTAGE AND CURRENT SOURCE WITH
• NUMERICAL EXAMPLES
• <. PN JUNCTION, BEHAVIOUR OF PN JUNCTION UNDER FORWARD AND
• REVERSE BIAS. SEMICONDUCTOR DIODE CHARACTERISTICS. STATIC AND
• DYNAMIC RESISTANCES. THEIR CALCULATION FROM DIODE
• CHARACTERISTICS. DIODE AS HALF WAVE, FULL WAVE, AND BRIDGE
• RECTIFIER, APPLICATIONS. RIPPLE FACTOR, AND ITS VALUE FOR HALF
• WAVE RECTIFIED OUTPUT. CALCULATION OF DC VOLTAGE, RMS
• VOLTAGE, AND EFFICIENCY
• a CAPACITOR INPUT FILTER, CHOKE INPUT FILTER, LC FILTER, RC FILTER
• PIE FILTER. BRIEF IDEA AND APPLICATIONS OF POWER DIODE, ZENER
• DIODE, TUNNEL DIODE, VARACTOR DIODE, APPLICATION OF ZENER DIODE
• AS VOLTAGE REGULATOR, NUMERICAL EXAMPLES
• a CONCEPT OF BIPOLAR JUNCTION TRANSISTOR @JT) AS TWO JUNCTIONS
• THREE TERMINAL DEVICE HAVING TWO KINDS OF CURRENT CARRIERS
• PNP AND NPN TRANSISTORS THEIR SYMBOL AND MECHANISM OF
• CURRENT FLOW. EXPLANATION OF FUNDAMENTAL CURRENT RELATIONS
• CONCEPT OF LEAKAGE CURRENT. CE, CB, CC CONFIGURATION. INPUT AND
• OUTPUT CHARACTERISTICS. DETERMINATION OF THE TRANSISTOR
• PARAMETERS. COMPARISON OF CE, CB, AND CC CONFIGURATION
• a TRANSISTOR AS AN AMPLIFIER IN CE CONFIGURATION. DC LOAD LINE, ITS
• EQUATION AND DRAWING IT ON THE OUTPUT CHARACTERISTICS
• TRANSISTOR BIASING CIRCUIT, EFFECT OF TEMPERATURE ON OPERATING
• POINT. NEED FOR STABILIZATION OF OPERATING POINT, EFFECT OF
• FIXING OPERATING POINT IN CUT-OFF AND SATURATION REGION ON THE
• PERFORMANCE OF AMPLIFIER
• ¢. DIODE CIRCUITS, BJT CIRCUITS, MOSFET CIRCUITS

DIGITAL ELECTRONICS AND MICROPROCESSOR

• + NUMBER SYSTEMS
• a LOGIC GATES
• 4 COMBINATIONAL CIRCUITS
• ¢ INTRODUCTION TO MICROPROCESSORS
• E¥TE¥ECcAkDCEASL]8*D8%LW#Ds|MPLEL|GHTANDALARMCIRCUITS
• + ELECTRICAL INSTALLATION OF SMALL RESIDENTIAL BUILDINGS
• a ELECTRICAL INSTALLATION OF COMMERCIAL BUILDINGS
• ±E:;=+TinT53¥AONFCEL%€TERILsc¥REL¥#OwER|NDAyTODAyLIFE,vARIOus
• SOURCES OF ENERGY. COMPARISON OF SOURCES OF POWER. SELECTION
• OF SITE FOR THERMAL POWER STATIONS, BLOCK DIAGRAM OF THERMAL
• POWER STATION, OPERATION OF BOILER. ECONOMIZER, AIR PREHEATER
• SUPER HEATER, STEAM PRIME MOVERS, CONDENSERS` DRAFT FANS ETC
• CLASSIFICATION OF HYDROELECTRIC PLANTS. GENERAL ARRANGEMENT
• AND OPERATION OF HYDROELECTRIC PLANT, LAYOUT DIAGRAMS
• HYDRAULIC TURBINES, SELECTION OF TURBINES, DAMS, SPILLWAYS
• PENSTOCK, SURGE TANK, FORE BAY, RESERVOIRS, CATCHMENT AREA
• NUCLEAR POWER PLANT, DIESEL POWER PLANT AND GAS POWER
• PLANT
• PREDICTION OF LOAD, LOAD CURVES, PLANT CAPACITY FACTOR
• UTILIZATION FACTOR, COMPONENTS FOR TOTAL COST OF GENERATION
• PER UNIT, METHODS FOR DEPRECIATION CALCULATION, EFFECT OF LOAD
• CURVES ON COST PER KWH
• NETwolex ANALysls
• + NETWORK TERMINOLOGY
• a AC FUNDAMENTALS
• S NETWORK THEOREMS
• + SUPERPOSITION THEOREM, THEVENIN'S THEOREM, NORTON'S THEOREM
• MAXIMUM POWER TRANSFER THEOREM AND THEIR APPLICATIONS
• CONVERSION OF CIRCUITS FROM STAR TO DELTA AND VICE VERSA, AND
• NUMERICAL PROBLEMS

ELECTRICAL MACHINES

• a DC GENERATOR
• ¢ DCMOTORS
• ¢ INTRODUCTION TO SINGLE PHASE TRANSFORMER
• a EQUIVALENT CIRCUIT AND PHASOR DIAGRAM FOR 1-PHASE
• TRANSFORMER
• + INTRODUCTION TO THREE- PHASE AC MACHINE
• 4 THREE PHASE TRANSFORMERS
• + THREE PHASE SYNCHRONOUS MOTORS
• a SINGLE PHASE MOTORS (FKW MOTORS) SINGLE PHASE MOTORS

POWER ELECTRONICS

• a INTRODUCTION TO SCR
• S CONTROLLED RECTIFIERS
• + INVERTERS
• 4 CHOPPERS
• 4 CYCLO-CONVERTERS
• EI.ECTRICAL INSTRUMENTATION
• a INTRODUCTION :IMPORTANT TERMS IN MEASUREMENT SYSTEM, ERRORS
• TYPES OF ERROR, CLASSIFICATION OF ERRORS ADVANTAGES OF
• ELECTRICAL INSTRUMENTATION, DATA TRANSMISSION & THEIR
• CLASSIFICATION, PRINCIPLE OF TELEMETRY SYSTEM` CLASSIFICATION OF

TELEMETRY SYSTEM

• + SENSORS AND TRANSDUCERS

S STRAIN GAUGE AND THERMOELECTRIC TRANSDUCERS

• + MEASUREMENT OF NON-ELECTRIC PARAMETERS

POWER SYSTEM PROTECTION

• a INTRODUCTION AND COMPONENTS OF A PROTECTION SYSTEM
• ¢ FAULT SAND OVER-CURRENT PROTECTION
• EQUIPMENT PROTECTION SCHEMES
• + SYSTEM PROTECTION
• PO\VER 0UALITY AND FACTS
• + TRANSMISSION LINES AND SERIES/SHUNT REACTIVE POWER
• COMPENSATION
• + VOLTAGE SOURCE CONVERTER BASED (FACTS) CONTROLLERS
• APPLICATION OF FACTS

ELECTRICAL ENERGY CONSERVATION AND AUDITING

• ENERGY SCENARIO
• BASICS OF ENERGY AND ITS VARIOUS FORMS
• ENERGY MANAGEMENT & AUDIT
• ENERGY EFFICIENCY IN INDUSTRIAL SYSTEMS

POWER SYSTEM DYNAMICS AND CONTROL

• + INTRODUCTION TO POWER SYSTEM OPERATIONS
• + MODELING OF SYNCHRONOUS MACHINES AND ASSOCIATED
• CONTROLLERS
• > STABILITY ANALYSIS
• <. ENHANCING SYSTEM STABILITY
• TRANSMISSION AND DISTRIBUTION
• a TRANSMISSION LINES: INTRODUCTION TO OVERHEAD TRANSMISSION
• LINE` cLAsslFlcATION AND cOMPARIsON OF Acroc TRANSMlssloN
• SYSTEMS. MAIN COMPONENTS OF TRANSMISSION LINE I.E. TOWER
• CONDUCTORS, AND OVERHEAD LINE INSULATORS. POTENTIAL
• DISTRIBUTION OVER SUSPENSION INSULATOR STRING, STRING
• EFFICIENCY AND METHODS OF IMPROVING STRING EFFICIENCY, SAG
• CALCULATION OF EQUAL SUPPORTS, EFFECT OF TRANSMISSION VOLTAGE
• ON EFFICIENCY AND REGULATION OF LINE. KELVIN LAW
• a PERFORMANCE OF TRANSMISSION LINES
• a DISTRIBUTION OF ELECTRICAL ENERGY

General Topics at a glance (Tier-I, Section A)

Engineering subjects in this syllabus

The Board publishes the following subject headings for the post of Junior Engineer Section Officer (Electrical). Each is reproduced in full, with every topic heading listed beneath it, in the section above.

Preparation Guidance

Derived strictly from the structure of the official notification:

• General Topics are common to every DSSSB engineering post – General Awareness, General Intelligence & Reasoning, Arithmetical & Numerical Ability and both language papers. Prepare this material once and reuse it across posts.
• Arithmetical & Numerical Ability is a closed list. Work through each enumerated item explicitly rather than assuming general quantitative aptitude coverage.
• Reasoning is verbal and non-verbal. Space visualisation, figure classification and arithmetical number series are separately listed and are commonly underestimated.
• Budget time by subject count. The subject-specific headings above show where the paper weight sits for this post.
• Both languages are examined independently. Hindi and English each test vocabulary, grammar, sentence structure, synonyms, antonyms and correct usage.
• Revise from the topic headings. The official notification lists explicit topic headings beneath each subject, which map directly onto the questions asked.

Official Source Links

• Official DSSSB syllabus PDF: https://dsssb.delhi.gov.in/syllabus_for_tier-i_and_tier-ii_combined_examination_for_the_post_of_junior_engineer_section_officer_electrical.pdf
• Delhi Subordinate Services Selection Board: https://dsssb.delhi.gov.in/

FAQ

1. What does the DSSSB syllabus for Junior Engineer Section Officer (Electrical) cover?

Two parts. General Topics (Tier-I, Section A) cover General Awareness, General Intelligence & Reasoning Ability, Arithmetical & Numerical Ability, Hindi Language & Comprehension and English Language & Comprehension. Subject-Specific Topics cover the engineering disciplines for the post of Junior Engineer Section Officer (Electrical), applicable to Tier-I Section B as well as Tier-II Parts I and II of the combined examination.

2. Which engineering subjects are in the Junior Engineer Section Officer (Electrical) syllabus?

The official notification lists 16 subject headings for this post. Every subject and every topic heading published under each subject is reproduced above under ‘Subject-Specific Topics’.

3. Is this Tier-I only, or Tier-I and Tier-II?

Both. This is the combined Tier-I and Tier-II indicative syllabus – the subject-specific topics apply to Tier-I Section B and Tier-II Parts I and II.

4. What exactly is in Arithmetical & Numerical Ability?

Number systems; simplification; decimals; data interpretation; fractions; LCM and HCF; ratio and proportion; percentage; average; profit and loss; discount; simple and compound interest; mensuration; time and work; time and distance; tables and graphs.

5. What exactly is in General Intelligence & Reasoning Ability?

Questions of both verbal and non-verbal types: analogies; similarities; differences; space visualisation; problem solving; analysis; judgment; decision making; visual memory; discrimination; observation; relationship concepts; arithmetical reasoning; verbal and figure classification; arithmetical number series.

6. What does General Awareness cover?

General awareness of the environment and its application to society; current events; everyday observation; and India and its neighbouring countries – history, polity, constitution, sports, art and culture, geography, economics, everyday science, scientific research, and national/international organisations and institutions.

7. How much official content is on this page?

1,238 words reproduced directly from the Board’s published syllabus notification, across 16 engineering subject headings and 5 general topics.

8. Where is the official syllabus PDF?

Linked in the Official Source Links section above and mirrored on this page. The authoritative copy is the one published by the Board at dsssb.delhi.gov.in.

Content reproduced from the official DSSSB syllabus notification linked above. OCR artefacts in the source PDF have been corrected where unambiguous.