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Efficiency

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by

Paul Sheffield

on 9 May 2017

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Transcript of Efficiency

How efficient is a motor?
Efficiency= Useful Energy Output/Total Energy Input

Energy Transferred=
Mass(kg) X Specific heat capacity X Temperature Change(oC)
Data
Electrical power of the motor
Energy transferred by the motor
Energy transferred to the weight
Sankey Diagram
Starter
describe the energy changes involved in a bungy jump
Calculation
Efficiency
L.O
Sankey diagrams
Calculation


Pages 16-17
Improving efficiency
Last lesson
what is elastic potential energy?
what is the equation for it?
how id it derived?
Full transcript