Elements describe the essential outcomes. | Performance criteria describe the performance needed to demonstrate achievement of the element. |
1 | Apply principle of moments to determine forces in supports, connections, bearings and support systems | 1.1 | Equilibrium of solids is explained |
1.2 | Polygon of forces is applied to determine an unknown force |
1.3 | Principle of moments is applied to solve moments of any quantity |
1.4 | Resultant of a system of co-planer forces is calculated |
1.5 | Twisting moment due to engine crank mechanisms is calculated |
1.6 | Moments of areas and solids are calculated |
2 | Perform friction calculations | 2.1 | Laws of friction are applied to solve problems involving friction in inclined planes |
2.2 | Coefficient of friction is converted to angle of repose |
2.3 | Friction theory is applied to solve problems involving screw threads |
2.4 | Brake torque is analysed and problems are solved relating to work lost on brake shoes and brake discs |
3 | Solve motion problems | 3.1 | Linear velocity/time and acceleration/time graphs are applied to derive standard linear formula |
3.2 | Problems of linear and angular motion involving uniform acceleration and deceleration are solved |
3.3 | Marine engineering problems involving free falling bodies are solved |
4 | Solve problems using principle of momentum | 4.1 | Relationship between momentum and impulse is explained |
4.2 | Conservation of energy theory is applied to problems involving collision of perfectly elastic bodies |
5 | Solve problems using principles of dynamics | 5.1 | Centripetal force is distinguished from centrifugal force |
5.2 | Relationship between centripetal and centrifugal force and mass, angular velocity and radius is clarified |
5.3 | Problems are solved involving centripetal and centrifugal forces |
5.4 | Centripetal acceleration is distinguished from centrifugal force |
5.5 | Out-of-balance forces on co-planer systems are calculated |
5.6 | Bearing reactions in rotating shafts are determined |
5.7 | Radius of gyration and moment of inertion when applied to rotating bodies is explained |
5.8 | Centrifugal forces in governors are calculated |
5.9 | Principles of dynamics are applied to solve problems involving rotating bodies, accelerating shafts, motors and flywheels |
6 | Calculate stresses and strains on components due to axial loading and restricted thermal expansion | 6.1 | Reduction in area and percentage elongation of tensile test specimens is calculated |
6.2 | Stresses in composite bodies of dissimilar dimensions and dissimilar materials are calculated |
6.3 | Problems involving thermal stress on components due to temperature change with free and restricted expansion are solved |
7 | Apply thin cylinder theory to determine stresses in pressure vessels | 7.1 | Stress on thin-shelled pressure vessels due to internal pressure is calculated |
7.2 | Formula for calculating stress on thin-shelled pressure vessels to incorporate special conditions is modified |
8 | Apply torsion theory to calculate shear stress | 8.1 | Torsion equation is applied to solve problems involving solid and hollow shafts |
8.2 | Power transmitted in shafts and coupling bolts is calculated |
8.3 | Torsion equation is applied to calculate stress and deflection in a close-coiled helical spring |
8.4 | Power transmitted by shafts and couplings is calculated |
9 | Solve problems involving fluids | 9.1 | Variation of fluid pressure with depth is calculated |
9.2 | Bernoulli’s Theorem is used to solve problems of velocity, pressure and head in pipes and ducted systems |
9.3 | Archimedes’ Principle is used to solve problems related to floating vessels using real and apparent weight |
10 | Apply beam theory to solve problems | 10.1 | Reactions of a loaded beam are calculated |
10.2 | Shear force and bending moment diagrams are constructed for simply supported and cantilever beams |
10.3 | Shear force and bending moment diagrams for beams with concentrated and uniformly distributed loads are calculated |
10.4 | Beam equation is applied to derive stresses in beams loaded with concentrated and uniformly distributed loads |
10.5 | Beam equation is applied to calculate bending stresses |