A NALCO SUPT JOT Operator and Operator Grade 3 mock test from Toppersexam.com is a practice paper based on the latest exam pattern and syllabus, designed to help you assess your preparation level.
NALCO SUPT JOT Operator and Operator Grade 3 Free Mock Test
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NALCO SUPT (JOT) Operator & Operator Grade III Syllabus 2026, Exam Pattern
NALCO SUPT (JOT) Operator & Operator Grade 3 Syllabus 2026, Exam Pattern, Exam Date 2026
Detail Information about NALCO has published notification 2026 for the recruitment of SUPT (JOT) Operator & Operator Grade 3 vacancies. Those Candidates who are Interested to the following vacancy and completed all Eligibility Criteria can read the Notification & Apply Online. In this page we provide the Complete Syllabus of this Recruitment with Latest Update Exam Pattern and the Exam Date also.
NALCO SUPT(JOT) Operator & Operator Grade 3 Syllabus 2026 - Overview
| Organization Name | National Aluminium Company Limited (NALCO) |
| Post Name | SUPT (JOT) Operator & Operator Grade 3 (Non Executive) |
| No of Posts | 109 |
| Application Mode | Online |
| Category | Syllabus and Exam Pattern |
| Selection Process | Computer Based Test (CBT) Trade Test (for select posts) Document Verification Pre-employment Medical Examination (PEME) |
| Official website | nalcoindia.com |
NALCO SUPT (JOT) Operator & Operator Grade 3 Syllabus 2026
Technical Subject : (Expected)
1. Basic Electronics & Electrical Engineering
Fundamentals: Concept of Voltage, Current, Resistance, Power, Ohm's Law, and Kirchhoff's Laws ($KVL$ and $KCL$).
Components: Resistors, Capacitors, and Inductors (types, color coding, and series-parallel combinations).
AC Circuits: Alternating current concepts, RMS values, peak values, frequency, impedance, and power factor.
Magnetic Circuits: Basics of electromagnetism, electromagnetic induction, and transformers.
2. Semiconductor Devices & Analog Electronics
Diodes: P-N Junction diode characteristics, Zener diodes, Rectifiers (Half-wave, Full-wave, Bridge), Filters, and Clippers/Clampers.
Transistors: Bipolar Junction Transistors (BJTs) - CB, CE, CC configurations, biasing circuits, and Field Effect Transistors (FETs / MOSFETs).
Amplifiers & Oscillators: Single and multi-stage amplifiers, feedback concepts, and standard oscillator circuits (Hartley, Colpitts, RC Phase shift).
Operational Amplifiers (Op-Amps): IC 741, inverting/non-inverting amplifiers, summing amplifiers, and comparators.
3. Digital Electronics
Number Systems: Binary, Octal, Hexadecimal, and BCD conversions.
Logic Gates: AND, OR, NOT, NAND, NOR, XOR, XNOR, and Boolean Algebra.
Combinational Circuits: Adders, Subtractors, Multiplexers (MUX), and Demultiplexers (DEMUX).
Sequential Circuits: Flip-flops (RS, JK, D, T), Counters (Asynchronous and Synchronous), and Shift Registers.
4. Electronic Instrumentation & Measurement
Measuring Instruments: Construction and working principles of PMMC, MI meters, Voltmeters, Ammeters, Ohmmeters, and Multimeters (Analog & Digital).
Cathode Ray Oscilloscope (CRO): Block diagram, measurements of voltage, frequency, and phase using Lissajous patterns.
Transducers & Sensors: LVDT, Strain Gauges, Thermocouples, RTDs, Thermistors, and Optoelectronic devices (LDR, Photodiode, LED).
5. Microcontrollers & Industrial Automation Basics
Microprocessors & Microcontrollers: Introduction to 8085 architectures and 8051 microcontrollers.
Industrial Controls: Basic building blocks of Programmable Logic Controllers (PLCs), Distributed Control Systems (DCS), and SCADA concepts.
6. Power Electronics & Cables
Power Devices: SCR, TRIAC, DIAC, and IGBT characteristics and applications.
Cables & Soldering: Types of electronic cables, stripping, crimping, and PCB soldering techniques.
7. Trade Safety and Workshop Practices
Safety Procedures: Occupational safety, handling of electrical accidents, fire extinguishers, first-aid, and standard PPE protocols.
Hand Tools: Proper utilization of soldering irons, desoldering pumps, wire strippers, and multi-testers.
1. Basic Electronics & Electrical Engineering
Fundamentals: Concept of Voltage, Current, Resistance, Power, Ohm's Law, and Kirchhoff's Laws ($KVL$ and $KCL$).
Components: Resistors, Capacitors, and Inductors (types, color coding, and series-parallel combinations).
AC Circuits: Alternating current concepts, RMS values, peak values, frequency, impedance, and power factor.
Magnetic Circuits: Basics of electromagnetism, electromagnetic induction, and transformers.
2. Semiconductor Devices & Analog Electronics
Diodes: P-N Junction diode characteristics, Zener diodes, Rectifiers (Half-wave, Full-wave, Bridge), Filters, and Clippers/Clampers.
Transistors: Bipolar Junction Transistors (BJTs) - CB, CE, CC configurations, biasing circuits, and Field Effect Transistors (FETs / MOSFETs).
Amplifiers & Oscillators: Single and multi-stage amplifiers, feedback concepts, and standard oscillator circuits (Hartley, Colpitts, RC Phase shift).
Operational Amplifiers (Op-Amps): IC 741, inverting/non-inverting amplifiers, summing amplifiers, and comparators.
3. Digital Electronics
Number Systems: Binary, Octal, Hexadecimal, and BCD conversions.
Logic Gates: AND, OR, NOT, NAND, NOR, XOR, XNOR, and Boolean Algebra.
Combinational Circuits: Adders, Subtractors, Multiplexers (MUX), and Demultiplexers (DEMUX).
Sequential Circuits: Flip-flops (RS, JK, D, T), Counters (Asynchronous and Synchronous), and Shift Registers.
4. Electronic Instrumentation & Measurement
Measuring Instruments: Construction and working principles of PMMC, MI meters, Voltmeters, Ammeters, Ohmmeters, and Multimeters (Analog & Digital).
Cathode Ray Oscilloscope (CRO): Block diagram, measurements of voltage, frequency, and phase using Lissajous patterns.
Transducers & Sensors: LVDT, Strain Gauges, Thermocouples, RTDs, Thermistors, and Optoelectronic devices (LDR, Photodiode, LED).
5. Microcontrollers & Industrial Automation Basics
Microprocessors & Microcontrollers: Introduction to 8085 architectures and 8051 microcontrollers.
Industrial Controls: Basic building blocks of Programmable Logic Controllers (PLCs), Distributed Control Systems (DCS), and SCADA concepts.
6. Power Electronics & Cables
Power Devices: SCR, TRIAC, DIAC, and IGBT characteristics and applications.
Cables & Soldering: Types of electronic cables, stripping, crimping, and PCB soldering techniques.
7. Trade Safety and Workshop Practices
Safety Procedures: Occupational safety, handling of electrical accidents, fire extinguishers, first-aid, and standard PPE protocols.
Hand Tools: Proper utilization of soldering irons, desoldering pumps, wire strippers, and multi-testers.
General English :
1. Joining Sentences
2. Substitution
3. Passage Completion
4. Idioms and Phrases
5. Sentence
6. Completion
7. Error Correction (Phrase in Bold)
8. Antonyms
9. Active and Passive Voice
10. Substitution
11. Sentence Improvement
12. Synonyms
13. Spelling Test
14. Error Correction (Underlined Part)
15. Transformation
16. Prepositions
17. Sentence Arrangement
18. Fill in the blanks
19. Spotting Errors
20. Para Completion
Quantitative Aptitude :
1. Mixtures and Allegations
2. Mensuration
3. Permutations and Combinations
4. Problems on L.C.M and H.C.F
5. Pipes and Cisterns
6. Odd Man Out
7. Quadratic Equations
8. Probability
9. Profit and Loss
10. Simplification and Approximation
11. Percentages
12. Simple Equations
13. Problems on Numbers
14. Time and Work Partnership
15. Ratio and Proportion
16. Boats and Streams
17. Simple Interest
18. Time and Distance
19. Problems on Trains
20. Areas
21. Races and Games
22. Numbers and Ages
23. Averages
24. Indices and Surds
25. Compound Interest
26. Volumes
Reasoning :
1. Analogy
2. Series Completion
3. Verification of truth of the Statement
4. Situation Reaction Test
5. Direction Sense Test
6. Classification
7. Data Sufficiency
8. Alpha- Numeric Sequence Puzzle
9. Dot Situation
10. Identical figure groupings
11. Forming figures and analysis
12. Construction of squares and Triangles
13. Series
14. Analytical Reasoning
15. Paper Folding
16. Paper Cutting
17. Cubes and Dice
18.Water Images
19. Mirror Images
20. Figure Matrix
21. Completion Incomplete Pattern
22. Spotting embedded figures
23. Classification
24. Rules Detection
25. Puzzle Test
26. Blood Relations
27. Coding-Decoding
28. Assertion and Reasoning
29. Arithmetical Reasoning
30. Operations of Mathematics
31. Venn Diagrams
32. Word Sequence
33. Missing Characters
34. Sequential Output training
35. Directions
36. Test on Alphabets
37. Eligibility Test
General Knowledge :
1. Important Days
2. Indian History
3. Books and Authors
4. Awards and Honors
5. Indian National Movement
6. Sports
7. Current Affairs – National and International
8. Abbreviations
9. General Policy
10. Science and Technology
11. Science – Inventions & Discoveries
12. Capitals of India
13. Indian Economy
14. Budget and Five Year Plans
15. Countries and Capitals
16. International and National Organizations
NALCO SUPT (JOT) Operator & Operator Grade 3 Exam Pattern 2026
There will be no negative marking for wrong answer.
Medium of Exam : Hindi & English
Duration : 120 Minutes
Exam Date 2026 : Notified Soon
Starting Date of Application Form : 21st May 2026
Last Date of Application Form : 10th June 2026
Total Post : 109
Medium of Exam : Hindi & English
Duration : 120 Minutes
| S.No | Subject | No.of Question | Marks |
| 1 | Technical Subject | 60 | 60 |
| 2 | Quantitative Aptitude, Reasoning, General Knowledge & English | 40 | 40 |
| Total | 100 | 100 |
Exam Date 2026 : Notified Soon
Starting Date of Application Form : 21st May 2026
Last Date of Application Form : 10th June 2026
Total Post : 109
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5. 1000 (+) GK MCQ with Answer PDF Book in Hindi.
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