Official provider page
Each action links to the legitimate university or institution page. Availability and access status were last checked on 30 August 2026.
CURATED EXTERNAL FREE LEARNING
Free engineering video courses, organized for practical progress.
Use this small, quality-first collection to study with reputable universities, then apply the concepts through Sajjad's Engineering Academy guides, calculators and knowledge checks. Every listing is reviewed against the provider's official page before publication.
HOW CURATION WORKS
Useful context, not a directory of random links.
We favor complete lecture series and structured courses from recognized universities and institutions. The academy adds prerequisites, outcomes, study order and practical next steps without copying or hosting provider content.
Clear learning fit
Level, topic, prerequisites and learning outcomes help learners choose a resource that matches their current knowledge.
Academy practice
Related guides, calculators and checks turn external instruction into an evidence-led learning sequence for industrial work.
Independent curation: every item below is an “External free learning resource.” Sajjad's Engineering Academy does not own, accredit, certify or claim affiliation with these providers. Free learning access does not imply a free certificate, assessment, tutor support or permanent availability. Provider terms and current access conditions apply.
ELECTRICAL • MOTORS & DRIVES
Build from circuit behavior to industrial drive systems.
Start with circuit analysis if you need the foundation. Move to electric drives after you can work confidently with basic circuit, power and rotating-machine concepts.
Circuits and Electronics
Provider: MIT OpenCourseWare, Massachusetts Institute of Technology
Level: Undergraduate foundation / Beginner to Intermediate
Language: English
Topic: Electrical circuits and electronics
Format: Structured lecture videos with notes, assignments and exams
Free-access status: Course materials and lecture videos are openly available on MIT OpenCourseWare. No academy certificate is offered or implied.
Prerequisites: Comfort with algebra, basic calculus and introductory physics will make the circuit models and dynamic analysis easier to follow.
Learning outcomes: Analyze resistive networks using standard circuit methods; connect sources, energy-storage elements and transient behavior; explain basic amplifier, MOSFET, digital and frequency-domain abstractions; and compare predicted circuit behavior with measurements.
Recommended study use: Work through the lecture sequence in order. Attempt a related problem before reading its solution, and keep a formula-and-assumptions log rather than watching passively.
Watch on provider site ↗Fundamentals of Electric Drives
Provider: NPTEL / IIT Kanpur
Instructor listed by provider: Prof. Shyama Prasad Das
Level: Intermediate
Language: English
Topic: Motors and electric drive systems
Format: Structured NPTEL course and lecture series
Free-access status: The official NPTEL course page and learning material are publicly accessible. Any optional assessment or certificate arrangement is separate and is not promised by the academy.
Prerequisites: Prior exposure to electrical machines and power electronics. Review three-phase power, motor fundamentals and safe electrical measurement before using the course for workplace learning.
Learning outcomes: Identify the functional blocks of an electrical drive; relate motor, converter, control and mechanical-load behavior; interpret speed–torque requirements; and develop better hypotheses when an industrial drive does not accelerate, regulate or stop as expected.
Recommended study use: Map each theory topic to one real asset without recording confidential data. Note the motor nameplate variables, driven-load behavior, command path and protection boundaries, then verify every workplace conclusion against the installed OEM documentation.
Watch on provider site ↗PLC • AUTOMATION • CONTROLS
Connect control theory to a traceable PLC sequence.
This pathway develops system-level understanding before troubleshooting inputs, logic, outputs or field devices. It does not replace OEM software training or authorization to access a live controller.
Industrial Automation and Control
Provider: NPTEL / IIT Kharagpur
Instructors listed by provider: Prof. S. Mukhopadhyay and Prof. S. Sen
Level: Intermediate
Language: English
Topic: Industrial automation, measurement, process control and PLC sequence control
Format: Structured NPTEL lecture sequence
Free-access status: The official NPTEL course page and lecture sequence are publicly accessible. Any optional examination or certificate is separate and is not offered or promised by the academy.
Prerequisites: Basic electrical circuits, industrial sensors, actuators and control-system terminology. Learners should understand that a PLC program is only one layer of a machine safety and control system.
Learning outcomes: Describe an industrial automation architecture; distinguish measurement, continuous-control and sequence-control functions; explain PLC scan behavior and relay-ladder-logic flow; and organize field evidence across input, logic, output and actuator layers.
Recommended study use: Build a training-only I/O map while studying the sequence-control lectures. For each signal, record its normal state, permissive role, commanded output and safe verification method. Use generic examples and never publish confidential machine logic, network details or controlled drawings.
Watch on provider site ↗Create a four-layer PLC evidence trace
Choose a non-hazardous training scenario such as a simulated motor start. Document the evidence in this order:
- Input: field state and PLC input indication
- Logic: permissives, interlocks and sequence step
- Output: PLC command and output indication
- Field action: interface device, actuator and feedback
State what would disprove each hypothesis. Do not force I/O, bypass interlocks or connect to a production controller for this exercise.
Next steps: Review control and drive terminology, connect PLC commands to the VFD command path, then test your evidence decisions.
Review the engineering glossary →Trace the VFD command path →
Apply the PLC troubleshooting workflow →
Complete the PLC knowledge check →
PLC safety and governance boundary: controller access, online monitoring, program changes, forcing and downloads require approved authorization, current backups, change control, OEM procedures, risk assessment and a tested recovery plan. Safety functions and interlocks must not be bypassed for learning or fault finding.
RELIABILITY • AVAILABILITY • RISK
Turn failure records into defensible reliability decisions.
Learn the probability and system-model foundations first, then apply them with consistent asset boundaries, failure definitions and exposure data from academy reliability resources.
Introduction to Reliability Engineering
Provider: NPTEL / IIT Kharagpur
Instructor listed by provider: Prof. Neeraj Kumar Goyal
Level: Beginner to Intermediate
Language: English
Topic: Reliability, maintainability, availability and probabilistic risk
Format: Structured NPTEL lecture sequence
Free-access status: The official NPTEL course page and lecture sequence are publicly accessible. Any optional examination or certificate is separate and is not offered or promised by the academy.
Prerequisites: Basic algebra and probability. Familiarity with equipment failure records helps when translating the models into maintenance decisions.
Learning outcomes: Distinguish reliability, maintainability and availability; interpret constant, increasing and decreasing failure-rate behavior; model simple series, parallel and standby systems; and explain why calculation inputs and operating boundaries must be defined before comparing assets.
Recommended study use: Follow the lectures in sequence while building a definitions sheet for failure, repair time, operating exposure and system boundary. Recalculate one generic example with the academy tool, then record what evidence would invalidate the result.
Watch on provider site ↗Build an auditable reliability baseline
Use one non-confidential asset example and document:
- Boundary: asset, duty, period and operating exposure
- Failure rule: which events count and which are excluded
- Time rule: active repair, waiting and restoration boundaries
- Decision: what the result can support—and what it cannot prove
Compare MTBF, MTTR and availability only when definitions and observation periods are consistent. A favorable KPI does not prove that a failure mode is controlled.
Next steps: collect a clean baseline, test the calculation, then investigate repeat failures with RCA and FMEA.
Collect MTBF and MTTR evidence →Calculate reliability indicators →
Structure a root-cause investigation →
Prioritize failure modes with FMEA →
Reliability boundary: calculations depend on complete records, consistent definitions and comparable operating conditions. Approved site data, OEM requirements, statutory obligations and competent engineering review take priority over generic examples or a single KPI.
ACADEMY LEARNING SEQUENCE
Turn the videos into a practical evidence workflow.
This sequence connects the external theory to academy-created resources. It is a study pathway, not authorization to perform electrical work.
Check circuit and power concepts
Study the MIT course sections that match your gaps, then use the academy calculator to practise three-phase power relationships and record assumptions.
Use the three-phase calculator →Follow the drive power path
Use the NPTEL course to connect machine, converter, controller and load behavior. Then review commissioning, command paths and trip evidence.
Read the VFD fundamentals guide →Test diagnostic decisions
Complete the electrical knowledge check. For every missed answer, return to the relevant theory or academy guide before repeating it.
Open the electrical knowledge check →Safety boundary: electrical and rotating-equipment work must follow approved site procedures, OEM manuals, PTW/LOTO, risk assessments, test-before-touch requirements and competent-person controls. Never use educational material as a substitute for task authorization, controlled drawings or current equipment-specific instructions.
Prefer an academy-created pathway?
Browse free practical engineering paths with guides, tools and browser-local progress.