Joe Robinson Training

SI Units: What Are The Units for Time, Frequency and Periodic Time

AC Theory: How Does Frequency Affect Inductive Reactance?

AutoCAD 2017 Tutorial: Polylines using relative co-ordinates

What is Electricity? Part 3: Which Way Do Electrons Flow?

DIY Friday 5: How to Repair a Leaking Pressure Washer Lance

Questions from Viewers: AC Theory, How to Calculate Power Factor and Draw a Power Triangle to Scale

Which Calculator Should I Buy For My Electrical Course? Casio fx-83GT PLUS v Casio fx-85GTX Unboxing

Capacitors in Series and Parallel

Random Friday: How to Use Concrete Fixing Screws

What is the Luminous Flux Method or Lumen Method for Calculating Light Levels?

How to Use the Luminous Flux Method to Calculate the Amount of Lumens Required to Illuminate a Room

AC Theory: Why is AC Called a Sine Wave?

AC Theory: How to Sketch an Out of Phase Waveform

Maths Tutorial Fractions 4: How Do I Convert Between Mixed & Improper Fractions

How to Calculate Inductive Reactance & Impedance for a Resistor & an Inductor connected in Series Q3

How to Calculate Inductive Reactance & Impedance for a Resistor & an Inductor connected in Series Q2

How to Calculate Inductive Reactance & Impedance for a Resistor & an Inductor connected in Series Q1

AC Theory: How to Find Resistance, Impedance, Inductive Reactance and Inductance of a Coil

AC Theory: How to Calculate Impedance and Construct an Impedance Triangle

AC Theory: How to Calculate Power Factor in an AC Circuit: What is Power Factor?

AC Theory: How to Calculate the Relationship between Voltages in an Inductive Circuit as a Triangle

AC Theory: How to Show the Relationships Between Current and Voltage using Phasors in AC Circuits

AC Theory: How to Draw a Phasor Diagram for an Inductive Load to Scale

AC Theory: How to Calculate Power Factor, Phase Angle & Power Factor Correction Capacitor of a Coil

SI Units: What are the Units for Resistivity? Why is Resistivity Measured in this Unit?

Why do Purely Inductive and Capacitive Circuits Not Dissipate Any Power?

AutoCAD 2017 Tutorial: Lines using absolute co-ordinates

How to Identify the Different Parts of a Sine Wave, Calculate Frequency and Periodic Time

What are SI units? An introduction to the Systeme International

Maths Tutorial Fractions 10: The Easy Way to Add Fractions

Maths Tutorial Fractions 8: Is This the Easiest Hack for Dividing with Fractions Ever?

Maths Tutorial Fractions 9: Is This the Best Method to Get Good at Dividing with Fractions?

8202 L3 Written Answer Exam Apr22 Q5: Determine the Neutral Current in an Unbalanced 3 Phase Circuit

8202 L2 Multiple Choice Exam Mar22 Q8: What is the Correct Transposition of this Formula? Maths Hack

AutoCAD 2017 Tutorial: Modify Tools

AutoCAD 2017 Tutorial: Polar Arrays

8202 L2 Multiple Choice Exam March 2022 Q7: What is the Diameter of a 6mm Squared Conductor?

8202 L3 Written Answer Exam Apr22 Q2: List 3 Methods of Generating Electricity with Renewable Energy

How to Calculate the Length of a Conductor Using Resistivity

AutoCAD 2017 Tutorial: 3D Modelling, Boolean Commands

The Easiest Most Accurate Way to Calculate Three Phase Neutral Current in an Unbalanced Load

AutoCAD 2017 Tutorial: 3D Modelling, Presspull Tool

3 Phase: How to Calculate Line Voltage, Phase Voltage, Line Current & Phase Current in Star & Delta

3 Phase: Delta Connected Loads, How to Calculate Line and Phase Voltage & Line and Phase Current

3 Phase: Star Connected Loads, How to Calculate Line and Phase Voltage & Line and Phase Current

Why Neutral Current is Zero in a Balanced System: How to Represent Neutral Current Using Waveforms

Three Phase: How to Use an Easier Method to Calculate Neutral Current in an Imbalanced Load

Three Phase: How to Calculate Neutral Current in an Imbalanced Load

Help for Your Electrical Exams!

AutoCAD 2017 Tutorial: Object Snaps

Is This the Weirdest Electrical Exam Question Ever? Why Would I Ever Need to Calculate This?!