The important thing to remember when gathering evidence is that the more evidence the better - that is, the more evidence you gather to demonstrate your skills, the more confident an assessor can be that you have learned the skills not just at one point in time, but are continuing to apply and develop those skills (as opposed to just learning for the test!). Furthermore, one piece of evidence that you collect will not usualy demonstrate all the required criteria for a unit of competency, whereas multiple overlapping pieces of evidence will usually do the trick!
From the Wiki University
What evidence can you provide to prove your understanding of each of the following citeria?
Apply principle of statics to determine forces in structures, connections, support systems, and trusses in two and three dimensions
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Bow’s notation is applied to solve problems related to trusses Completed |
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Individual loads are computed using method of sections Completed |
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Forces in three-dimensional structures are calculated Completed |
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Calculate friction torque in plate and cone clutches
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Laws of friction are applied to develop formulae, using uniform wear, to find the torque in a plate and cone clutch Completed |
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Laws of friction are applied to develop formulae, using uniform pressure, to find the torque in plate and cone clutches Completed |
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Power to overcome friction in plate and cone clutches using uniform wear and uniform pressure formulae is computed Completed |
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Calculate displacement, velocity and acceleration in cams, engine mechanisms and gear systems
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Velocity and acceleration diagrams are applied to illustrate relative velocity and acceleration Completed |
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Output of epicyclic gears is calculated by applying relative velocity and acceleration theory Completed |
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Inertia loads are calculated using piston velocity and acceleration equations Completed |
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Analyse forces and couples to balance reciprocating machinery
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How primary force balance is obtained is graphically illustrated Completed |
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Relationship between complete balance and dynamic balance is explained Completed |
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Reciprocating piston acceleration formula is applied to differentiate between primary and secondary forces Completed |
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Complete balance for a multicylinder reciprocating engine or machine is illustrated graphically using vector diagrams and computed analytically Completed |
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Apply simple harmonic motion principles |
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to solve problems in free and forced vibration
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Differences in the terms amplitude, frequency and period are explained Completed |
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Simple harmonic motion (SHM) equations are derived from the scotch yoke mechanism Completed |
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Equations for displacement, velocity, acceleration and frequency in SHM are developed Completed |
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Displacement, velocity, acceleration and frequency in SHM in a vibrating spring-mass system are determined Completed |
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Spring constant (k) for springs in series and parallel is calculated Completed |
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Forced vibration caused by an out-of-balance rotating mass is analysed to derive an expression for amplitude of forced vibration Completed |
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Dangers of resonance are explained Completed |
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Transmissibility factor to calculate frequency and spring rate are applied Completed |
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Calculate hoop stresses in rotating rings and stresses in compound bars
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How rotational stress is generated by centrifugal force is explained Completed |
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Formula for hoop stress in a rotating ring is applied to calculate hoop stress and/or limiting speed of rotation Completed |
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Stresses in compound bars subject to axial loads and/or temperature change are determined Completed |
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Apply strain energy and resilience theory to determine stresses caused by impact or suddenly applied loads
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Equation is derived to calculate strain energy in a deformed material Completed |
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Stress in a material due to impact or dynamic loads is determined using energy equation Completed |
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Equation to calculate stress caused by suddenly applied loads is derived Completed |
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Calculate beam deflection
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Macaulay’s method is applied to calculate beam deflection Completed |
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Deflection of cantilever and simply supported beams is calculated using standard deflection formulae for different loads Completed |
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Apply Euler's formula to find buckling load of a column
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Effective length of a column with various end restraints is determined Completed |
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Slenderness ratio is applied to determine the strength of columns Completed |
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Relationship between slenderness ratio and buckling is explained Completed |
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How buckling load for a slender column is applied (including a factor of safety) is explained Completed |
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Calculate stresses
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How to combine stress formula and calculate stress with combined loading is explained Completed |
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Superposition is used to describe stress due to combined axial and bending stress Completed |
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Mohr’s Circle is employed to illustrate normal and shear stress Completed |
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Principal stress formulae are applied to explain how maximum combined normal and shear stress can be obtained Completed |
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Principal stress equation is applied to calculate maximum combined shear and normal stress Completed |
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Apply thick shell formulae
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Tangential stress distribution caused by internal and external pressure is analysed Completed |
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Lame’s theorem is applied to describe stress in thick cylinders due to internal and external pressure Completed |
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Apply continuity equation to determine changes in fluid velocity
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Conservation of energy theory is applied to calculate pressure, head and velocity of fluids flowing through orifices Completed |
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Volumetric and mass flow through a venturi meter is calculated Completed |
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Forces exerted by flowing fluids either free (jet) or contained are determined, including coefficients of velocity, contraction of area and discharge Completed |
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Determine changes in fluid flows through pipe systems and centrifugal pumps
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Difference between steady and unsteady flow is clarified Completed |
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Viscosity of fluids is analysed and difference between dynamic and kinematic viscosity is explained Completed |
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Significance of Reynolds number in fluid mechanics is explained Completed |
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Importance of critical Reynolds number is explained Completed |
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Flow losses in pipes and fittings are calculated Completed |
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Changes of velocity of liquids in a centrifugal pump are analysed and entry and exit vane angles are determined Completed |
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