Revision guide Flashcards
What is a kinetic pumped storage system
When energy demand is low, water is pumped from a lower reservoir, to a higher one. When demand is high, the water is released through turbines into the lower one, generating HEP
How do companies keep production costs low?
Using cheap labour, in other countries
Using cheap materials
Illegally disposing of waste
What is “design for maintenance”, and why is it used
When products are designed to be repaired, not replaced, which has a smaller impact on the environment
What is graphene
A single layer of carbon atoms
What is metal foam
Liquid metals, which have been pumped with air, and allowed to set.
Where is metal foam used?
In crash protectors
What is a PCB
Non conductive boards which contain copper tracks, for circuits to be built on
What is a microcontroller
A circuit which is used to carry out a very specific task
What is the gear which the torque is applied to called
The driver gear
What is the final gear in the train called
The driven gear
What is an idler gear
Gears in between the driver and the driven gear, used to change direction
How do you increase the speed of the driven gear
Make the driven gear smaller
