Engineering - Power Tools

Question 0

Suitable material for gears and why

Answer 0

High carbon steel or nylon

Because of resistance to wear and low friction

Question 1

Suitable material for housing and why

Answer 1

ABS because it can be injection moulded and it is very strong

Question 2

Suitable material for chuck and why

Answer 2

Steel

Resistance to wear

Strong

Question 3

Suitable material for grip and why

Answer 3

Rubber

Comfortable to hold (ergonomic)

High friction so it is easier to grip

Question 4

What are the 3 advantages of batteries?

Answer 4

No need to be connected to electrical system which is preferable in some cases

Most things that run on batteries are portable

Can be easily replaced

Question 5

What are the 3 disadvantages of batteries?

Answer 5

Batteries can be used for only a limited time (including rechargeable batteries)

Some batteries are dangerous and can lead to fires, explosion or chemical pollution

Some need to be maintained and checked periodically

Question 6

What are the 3 environmental problems with batteries?

Answer 6

Contains toxic chemicals

Can cause water and soil pollution in landfill

Can contain harmful chemicals that can burn human skin and eyes

Question 7

What are the 4 safety considerations of power tools and how are they controlled?

Answer 7

Moving parts can catch clothes and hair - tie hair back, no loose clothes

Flying debris - wear safety googles

Noise pollution - wear hearing protectors

Dust inhaling - wear dust mask

Question 8

What do you use in question asking what the designer needs to know?

Answer 8

ACCESS FM

Aesthetics

Cost

Customer

Environment

Size

Safety

Function

Material