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Series and Parallel Resistors

1/8/2021

 
Here are 7 tutorials that cover Series and Parallel Resistors. In the lessons, I go over how voltage division and current division work, and a few examples of each. I also run through a more complicated example that involves both voltage division and current division, but you'll see in the end that it's actually pretty straightforward to combine the two when seeking the equivalent resistance of a circuit. The full circuits course can be found here. ​
Series and Parallel Resistors
  • How voltage division works (series resistors)
  • Voltage division example problem #1 (series resistors)
  • Voltage division example problem #2 (series resistors)
  • How current division works (parallel resistors)
  • Current division example problem #1 (parallel resistors)
  • Current division example problem #2 (parallel resistors)
  • Equivalent Resistance of a Complex Circuit with Series and Parallel Resistors​

Basic Circuit Laws

12/2/2020

 
Basic Circuit Laws: KVL, KCL, and Ohm's Law
Here are 9 new video tutorials that cover Ohm's Law, Kirchhoff's Laws. They introduce the concepts and also go over a few worked examples of varying difficulty. 
​
  • Ohm's law
  • Ohm's law example problem #1
  • ​Ohm's law example problem #2
  • Kirchhoff's current law
  • Kirchhoff's current law example problem #1
  • Kirchhoff's current law example problem #2
  • Kirchhoff's voltage law
  • Kirchhoff's voltage law example problem #1
  • Kirchhoff's voltage law example problem #2

The rest of the Circuit Analysis course can be found here.

Introduction to Circuits

11/19/2020

 
Electric Circuits Tutorials
12 free tutorials covering circuits basics are up and ready to go. These tutorials mark the beginning of a full course on circuit analysis that will be located permanently at https://www.engineer4free.com/circuits.

All 12 circuits tutorials can be found below, or in the course page above.
  • What is charge
  • What is current
  • What is voltage
  • What is power
  • What is energy
  • What is resistance
  • What is resistivity
  • What is conductance
  • What is conductivity
  • Passive sign convention for circuits
  • ​Basic circuit elements, nodes, and branches

Free Online Engineering Dynamics Course

10/12/2020

 
Free Online Engineering Dynamics Course
With 52 free tutorials, the Engineering Dynamics (Mechanics) course is now complete. The course covers linear motion, projectile motion, circular motion, kinetics, work & energy, impulse & momentum, and rigid body rotation. 

You can find the dynamics lessons here.

In addition to the video lessons, I also created an additional 51 fully solved dynamics problems with solutions. These are available to Patreon supporters. If you found the tutorials helpful and want to support my work while getting some extra material, please consider becoming a Patron. 

You can find the practice problems with solutions here.

Engineering Dynamics: Rigid Body Rotation

10/12/2020

 
The final section of Engineering Dynamics is complete. In it you'll find 5 video tutorials and 8 fully solved practice problems. The videos make up numbers 48 - 52 in the Dynamics Course. They are also linked below for convenience
Engineering Dynamics Crankshaft Example

  • Translation vs rotation vs general motion
  • Relative motion analysis: vector analysis
  • Relative motion analysis scalar analysis
  • Instantaneous centre of zero velocity
  • Absolute motion analysis

The additional 8 practice problems can be found here with the rest of the dynamics problems & solutions.

Engineering Dynamics: Impulse & Momentum

9/23/2020

 
Engineering Dynamics Impulse & Momentum
A new section of the Engineering Dynamics course is complete! With 10 video tutorials, and 10 extra solved practice problems, the Impulse & Momentum chapter is ready to go. You can find the new lessons numbered #38-47 in the full dynamics course, but they are also listed below for convenience.

  • What is momentum
  • What is an impulse
  • Principle of impulse and momentum
  • Conservation of linear momentum
  • What is an impact
  • Coefficient of restitution
  • Central impact example #1
  • Central impact example #2
  • Central impact example #3
  • Oblique impact example​

The additional 10 practice problems can be found here with the rest of the dynamics problems & solutions.

Engineering Dynamics: Work And Energy

6/29/2020

 
Dynamics Work And Energy Tutorials And Questions
9 new video tutorials and 9 fully solved practice problems have been added to the Engineering Dynamics course, completing the Work & Energy chapter! They cover the basic variables and equations that you’ll need to solve Work & Energy problems. Some of the topics covered are conservative and non-conservative forces, the conservation of mechanical energy, the principle of work and energy, mechanical power, and mechanical efficiency.
Go To Full Course

The Civil Engineering Academy Podcast

5/13/2020

 
The Civil Engineering Academy
Have you ever wondered why Engineer4Free exists, and who is behind it? Listen to Episode 30 of the Civil Engineering Academy Podcast, where I share some details about why I started Engineer4Free and where it’s going in the future.

The Civil Engineering Academy is an excellent resource for those looking to pass the FE and PE exams. They do a great Podcast on all things Civil Engineering, as well as practice exams, review courses, and even Professional Development Hours (PDH) that you can put towards the continuing education requirements to maintain your PE licence. Check out the Podcast Episode, and make sure to scope out the rest of their site too!

Connect with CEA: Facebook | Instagram | Twitter
Alternate Podcast Links: Spotify | Google Podcasts | Apple Podcasts
Podcast Episode

Engineer4Free featured on Tutorial45

5/4/2020

 
Picture
Big shout out to Tutorial45 for including Engineer4Free in their list of 13 E-Learning Platforms That Every Engineering Student Should Know.

Tutorial45 is a website that curates lists of great software, hardware, resources, and tips for engineering students.
Go To Article

Dynamics: Kinetics

4/26/2020

 
Engineering Dynamics: Kinetics
7 new video tutorials and 9 fully solved practice problems have been added to the Dynamics course, completing the kinetics section! They cover the basics with a few examples of blocks on surfaces, and several situations with kinetic (massless) pulleys ranging from simple Atwood machines, to more complicated systems involving moving pulleys and friction surfaces.
Go To Full Course
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  • Home
  • C++ Programming
  • Calculus
  • Chemistry
  • Circuits
  • Differential Equations
  • Dynamics
  • Linear Algebra
  • Mechanics of Materials
  • Project Management
  • Statics
  • Structural Analysis
  • Statics1