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Claim Free Beta AccessThe Engineering Knowledge Test (EKT) syllabus for electrical engineering encompasses core undergraduate concepts including Electromagnetic Theory, Electrical Machines, Power Systems, Control Systems, and Analog and Digital Electronics, designed to assess technical proficiency for technical branch officers in the Indian Air Force.
What is the Exam?
At ExamBhai, we guide thousands of aspirants every year through the rigorous landscape of Indian defence examinations. One of the most prestigious technical gateways into the armed forces is the Engineering Knowledge Test (EKT), conducted alongside the Air Force Common Admission Test (AFCAT). For engineering graduates specializing in electrical and electronics domains, the EKT is a mandatory hurdle to clear if they wish to serve as technical branch officers in the Indian Air Force (IAF).
The EKT is specifically tailored to evaluate the deep, fundamental engineering acumen of candidates. While AFCAT tests general awareness, verbal ability, numerical ability, and reasoning, the EKT narrows its focus strictly to professional engineering disciplines. For electrical engineering graduates, this exam ensures that inductees possess robust, practical, and theoretical understanding of circuits, machines, power grids, and electromagnetism. Clearing this exam is your ticket to managing cutting-edge avionics, ground radar stations, missile systems, and sophisticated electrical infrastructure maintained by the IAF.
Key Highlights 2026
To help you plan your preparation timeline effectively, we at ExamBhai have compiled the essential highlights of the EKT 2026 exam in the table below:
| Parameter | Details |
|---|---|
| Exam Name | Engineering Knowledge Test (EKT 2026) |
| Conducting Body | Indian Air Force (IAF) |
| Exam Mode | Online Computer-Based Test (CBT) |
| Associated Exam | Conducted immediately following AFCAT |
| Duration | 45 minutes |
| Total Questions | 50 Multiple Choice Questions (MCQs) |
| Total Marks | 150 Marks |
| Marking Scheme | +3 marks for correct answers, -1 mark for incorrect answers |
| Language | English only |
| Official Portal | afcat.cdac.in |
Syllabus 2026
The EKT syllabus for electrical engineering is broad, mirroring a standard four-year Bachelor of Technology (B.Tech) curriculum. To streamline your studies, we have categorized the core modules into distinct subject headings.
| Module Name | Core Topics Covered |
|---|---|
| Engineering Mathematics | Matrices, differential equations, calculus, complex variables, probability, and numerical methods. |
| Electric Circuits & Fields | Network graph theory, KCL, KVL, node and mesh analysis, transient response, sinusoidal steady-state analysis, resonance, coupled circuits, two-port networks, and electromagnetic field theory (Maxwell's equations, electrostatic and magnetostatic fields). |
| Electrical Machines | Single-phase and three-phase transformers, DC machines (generators and motors), synchronous machines (alternators and motors), induction motors, and fractional kilowatt motors. Speed control, performance characteristics, and testing. |
| Power Systems | Basic power generation concepts, transmission line parameters, performance of lines, cable types, load-flowing studies, economic operation, symmetrical and unsymmetrical fault analysis, switchgear, protection relays, circuit breakers, and power system stability. |
| Control Systems | Mathematical modeling of systems, block diagram representation, signal flow graphs, transient and steady-state time response analysis, error constants, Routh-Hurwitz stability criterion, root locus, Nyquist plots, Bode plots, and state-space analysis. |
| Analog & Digital Electronics | Semiconductor physics, diodes, Bipolar Junction Transistors (BJTs), Field Effect Transistors (FETs), operational amplifiers (Op-Amps), feedback amplifiers, oscillators, wave shaping circuits, Boolean algebra, logic gates, combinational and sequential digital circuits, multiplexers, counters, and registers. |
| Electrical & Electronic Measurements | Bridges and potentiometers, measurement of voltage, current, power, energy, and power factor. Digital voltmeters, cathode-ray oscilloscopes (CRO), transducers, Q-meters, and signal analyzers. |
| Power Electronics & Drives | Power semiconductor devices (SCR, MOSFET, IGBT), phase-controlled rectifiers, choppers, inverters, cycloconverters, and speed control of DC and AC drives. |
Exam Pattern
Understanding the structure of the question paper is vital for time management. The EKT is designed to test both speed and accuracy within a tight window.
The test paper consists of 50 objective-type questions. Each question carries 3 marks, leading to a maximum possible score of 150 marks. There is a negative marking scheme where 1 mark is deducted for every incorrect response, while unattempted questions fetch zero marks. Because the time limit is only 45 minutes, candidates must maintain an average pace of less than a minute per question.
To bridge the gap between theory and practical application, you can practice free mock tests for Defence on ExamBhai to build speed and accuracy under real exam conditions.
Eligibility Criteria
Before applying, candidates must ensure they meet the stringent educational and age criteria laid down by the governing authorities. According to official guidelines hosted on the official career portal at Career Indian Air Force and referenced via central defense employment portals, the benchmarks are clear:
- Educational Qualification: Candidates must have cleared a minimum four-year graduation degree in Engineering or Technology (B.E/B.Tech) from a recognized university with a minimum aggregate of (60)% marks or equivalent. For electrical engineering, acceptable streams typically include Electrical Engineering, Electrical & Electronics Engineering, and Instrumentation Engineering.
- Age Limit: For Permanent Commission (PC) and Short Service Commission (SSC) in the Technical Branch, candidates must generally be between (20) and (26) years of age at the time of commencement of the course.
- Nationality: Must be a citizen of India as per Indian citizenship laws.
- Marital Status: Candidates below (25) years of age must be unmarried at the time of commencement of training.
Application Process
The application for EKT is integrated with the AFCAT registration cycle, which occurs twice a year (typically in June/July for the February batch and December/January for the August batch).
To apply, follow these sequential steps:
- Visit the official website at afcat.cdac.in.
- Register using a valid email address and active mobile number to generate your login credentials.
- Log in and fill out the online application form with your personal, academic, and professional details.
- Upload scanned copies of your passport-sized photograph, signature, and thumb impression as per the specified dimensions.
- Pay the required examination fee online via credit card, debit card, or net banking.
- Submit the form and take a printout of the confirmation page for future records.
Preparation Strategy
Cracking a technical screening test alongside a general aptitude test requires a disciplined, structured study plan. At ExamBhai, our expert mentors recommend the following strategy:
- Focus on Core Fundamentals: Do not try to memorize formulas blindly. Understand the physical derivation behind concepts like (V = IR), magnetic flux linkages, and Laplace transforms.
- Prioritize High-Weightage Topics: Spend more time mastering Electrical Machines, Power Systems, and Control Systems, as these consistently account for the bulk of technical questions.
- Master Numerical Speed: Many questions involve quick calculations. Practice solving problems without a calculator, as electronic calculators are not permitted in the CBT.
- Consistent Testing: Regular self-assessment is the ultimate differentiator. You should practice sectional quizzes for Defence on ExamBhai to isolate weak spots in analog electronics or network theory.
- Revise Formula Sheets: Maintain a dedicated notebook for core formulas, theorems (Thevenin's, Norton's, Superposition), and standard circuit configurations.
Cut-Off Trends
The cut-off for the EKT is determined by the Indian Air Force based on several variables, including the total number of applicants, overall vacancy count, and the difficulty level of the question paper.
Historically, while the AFCAT cut-off fluctuates between (150) and (170) marks out of (300), the EKT cut-off is evaluated separately. Candidates must clear both the AFCAT cut-off and the specialized EKT cut-off to qualify for the Air Force Selection Board (AFSB) interview stage. Based on historical data published on official recruitment notices at Career Indian Air Force, the safe score to secure an interview call in the electrical engineering stream typically ranges between (50) and (70) marks out of (150) in the EKT paper.
To evaluate your readiness against past performance metrics, you can practice previous year question sets for Defence on ExamBhai and analyze benchmark scores.
Frequently Asked Questions
Is EKT compulsory for all AFCAT candidates?
No, EKT is mandatory only for candidates applying for the Technical (Ground Duty) Branch. Candidates applying exclusively for Flying or Ground Duty (Non-Technical) branches do not need to attempt the EKT.
What is the marking scheme for the EKT exam?
The EKT carries 50 questions for a total of 150 marks. You receive (+3) marks for every correct answer and (-1) mark for every incorrect answer. Unattempted questions carry zero marks.
Can final-year engineering students apply for EKT?
Yes, final-year engineering students can apply provided they can submit proof of passing their graduation degree with the required aggregate percentage by the time they join the academy.
Is there any sectional cut-off within the EKT paper?
No, there is no individual sectional cut-off within the EKT paper itself. The evaluation is based on the aggregate total score obtained out of 150 marks.
How is the final merit list prepared for technical branches?
The final merit list is prepared by combining the normalized scores obtained in the AFCAT written examination, the EKT, and the scores secured during the AFSB interview process.
Are calculators allowed during the online EKT exam?
No, physical or electronic calculators are strictly prohibited inside the examination hall. Candidates must rely on mental math and quick scratchpad calculations to solve numerical problems.
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