This is a 6 slide PowerPoint that covers BTec National Engineering (A-Level equivalent) on the topic of Sources of Direct Current (DC). This PowerPoint includes a description of cells (and batteries) including internal resistance, photovoltaic cells, and stabilised AC to DC convertors. This is the seventh PowerPoint in this section (Electricity and circuits) and it builds on the previous lessons, bringing many aspects together including resistance in series and the use of capacitors and Zener diodes. v1.01 (Nov 2021 ) - Minor improvements

This is a 6 slide PowerPoint that covers BTec National Engineering (A-Level equivalent) on the topic of Capacitors in both series and parallel circuits. This PowerPoint includes circuit diagrams and worked examples of the capacitance, current and voltage calculations needed for basic circuits. This is an extension from the earlier lesson where capacitance and capacitors were introduced in detail. This is the sixth PowerPoint in this section (Electricity and circuits).

This is a 10 slide PowerPoint that covers BTec National Engineering (A-Level equivalent) on the topic of Resistors in both series and parallel circuits. This PowerPoint includes circuit diagrams and worked examples of the resistance, current and voltage calculations needed for basic circuits. This is the fifth PowerPoint in this section (Electricity and circuits). v1.01 (18th Nov 2020) - Minor corrections v1.02 (Nov 2021) - Minor improvements

This is a 9 slide PowerPoint that covers BTec National Engineering (A-Level equivalent) on the topics of Diodes in circuits. This lesson covers the three main rectification circuits, complete with animated diagrams to help students understand how they create the DC output from an AC input for bi-wave and full-wave variants. Protection circuits and the use of Zener diodes are also briefly covered, together with an worked example circuit question. This is the fourth PowerPoint in this section (Electricity and circuits).

This is a 14 slide PowerPoint that covers BTec National Engineering (A-Level equivalent) on the topics of Resistors and Resistance. This lesson describes the four main resistor types and applies these to Ohm’s Law. Resistivity calculations are covered which is linked to conductivity. Temperature coefficient of resistance is explained, together with a worked example. Kirschhoff’s laws for voltage and current are also briefly introduced. This is the third PowerPoint in this section (Electricity and circuits).

This is a 14 slide PowerPoint that covers BTec National Engineering (A-Level equivalent) on the topics of Capacitance and Capacitors. It covers the basic formula for calculating farads, for calculating capacitance from the properties of a capacitor, the exponential formulae for charging and discharging a capacitor, and the formula for the energy stored in a capacitor. There are graphs to show the charging and discharging of a capacitor and worked mathematical calculations. This is the second PowerPoint in this section (Electricity and circuits).

This is a 12 slide PowerPoint that covers BTec National Engineering (A-Level equivalent) on the topics of Electric fields. This covers the basics of radial fields around point charges, uniform fields, electrical field strength, electric flux, electric flux density, and Coulomb’s Law. A worksheet and answers is also included. This is the first PowerPoint in this section (Electricity and circuits).

This is a 12 slide PowerPoint that covers BTec National Engineering (A-Level equivalent) on the topics of Enthalpy, Entropy and the Gas Laws. The first two sub-topics are briefly defined and covered qualitatively with the formula for Enthalpy included. The gas laws are broken down into Boyle’s Law and Charles’ law before being combined to make the standard gas law pV/T = constant This is the fifth PowerPoint in this section (Thermodynamics) and includes a worked example of the use of the gas law when pumping up a bike tyre.

This is an 8 slide PowerPoint that covers BTec National Engineering (A-Level equivalent) on the topic of Heat Engines and Heat Pumps. This lesson covers the calculations for calculating the thermal efficiency for these systems, including a worked example for a modern combustion engine. This is the fourth PowerPoint in this section (Thermodynamics).

This is a 13 slide PowerPoint that covers BTec National Engineering (A-Level equivalent) on the topics of Specific Heat Capacity and Specific Latent Heat. This lesson covers the calculations for both heating and changing state of materials. The use of the gradients and scales of graphs are also covered as a method to finding the SHC and SLH of materials that are tested. This is the third PowerPoint in this section (Thermodynamics) and includes a slide which outlines the standard experiment to find the SHC of a substance using an immersion heater. v1.1 - Worksheet and answers add; minor grammar changed on graph explanation

This is a 9 slide PowerPoint that covers BTec National Engineering (A-Level equivalent) on the topic of Thermal Expansion. This lesson covers the calculations for expansion of metals due to heating. This is the second PowerPoint in this section (Thermodynamics). v1.01 - amended a superscript issue in the worked example (2/9/21)

This is a 10 slide PowerPoint that covers BTec National Engineering (A-Level equivalent) on the topic of Heat Transfers. This includes a mathematical explanation of conduction and qualitative explanations for radiations and convection. This is the first PowerPoint in this section (Thermodynamics) and includes a worked example of conduction using steady rate thermal conductivity.

This is a 13 slide PowerPoint that covers BTec National Engineering (A-Level equivalent) on the topic of Fluid Flow in Pipes. This lesson covers the calculations for volumetric flow rate, mass flow rate and how these are applied to tapering pipes. This is the fourth PowerPoint in this section and includes definitions, formulae and worked examples.

This is a 8 slide PowerPoint that covers BTec National Engineering (A-Level equivalent) on the topic of Immersed Bodies. This covers the calculations of buoyancy for fully and partially submerged objects. This builds on Archimedes’ principle with a mathematical understanding of buoyancy. This is the third PowerPoint in this section (Fluid dynamics) v1.2 - Worksheet added with answers (2nd Sept 2021)

This is a 14 slide PowerPoint that covers BTec National Engineering (A-Level equivalent) on the topic of Hydrostatic Pressure. This covers hydrostatic thrust calculations, centre of mass and links to everyday engineering (dams), including a worked example. This is the second PowerPoint in this section (Fluid dynamics) v 1.1 - Worksheet added, with answers (2nd Sept 2021)

This is a 12 slide PowerPoint that covers BTec National Engineering (A-Level equivalent) on the topic of Fluid Systems. This is an introduction to this topic where the properties of mass, pressure, volume, density and weight are explained. A worksheet of questions and an answer sheet are included. This is the first PowerPoint in this section and includes definitions and worked examples.