Flashcards in engineering theory 2 Deck (13)
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1
what duties does an employer have under the health and safety at work act
to provide a safe system of work
provide safe equipment, plant and machinery
provide supervision, instruction and training
safe access and egress from place of work
.
2
what are the duties under the manual handling regulations
Use the training and instructions provided to ensure that you lift correctly
Follow the safe systems of work such as wearing correct
PPE or not entering safety zone to help reduce risk
Follow the risk assessment and the control measures
contained within it, designed to identify potential risks
Use mechanical means wherever possible (eg forklift) to
avoid any manual handling by yourself
3
state the benefits of composite materials compared to metals
Lighter weight compared to steel, providing fuel efficiency
savings
Percentage of a car has to be recycled
Composites can be mass produced
Steel materials corrode and rust
Composites last for longer periods
High strength-to-weight ratio
Carbon fibre looks good
Stronger/stiffer materials than steel
Weight for weight much stronger than steel
Increased rigidity
Faster due to power-to-weight ratio
Suited to electric vehicles/improved range.
4
what is a hacksaw used for
Used for manually cutting metals into shapes such as squares, rectangles, or for cutting solid or hollow sections across the section.
5
how do you operate a hacksaw
Hacksaw is held with one finger against the frame and gripped by the handle. The starting point is pulled back to place a starting cut against the indicated cutting line. the other hand is used to hold the front of the hacksaw frame. Hacksaw cuts on the draw as work proceeds.
6
how can a pillar drill be used safely
Foot-operated pedal that allows for an immediate stop when the operator lifts the foot off it
Emergency stop button that allows for an immediate stop when pressed, allowing colleagues to stop the drill
PPE- such as safety glasses/goggles to reduce risk of
particles entering eye when drilling
Machine guards to prevent debris flying when the drill is in operation by containing it
Do not enter zones around workers to keep others at a safe distance from the drill
7
what are the benefit of using SI units
use of an internationally recognized standard
ensures consistency if parts made in different countries
enables all manufacturers in different countries to understand the measurement unit used
measurement of dimensions for engineering product
enables tolerances to be specified and applied
distances can be calculated
fuel measurements
area of wings measured = lift
weight of plane
size, shape, volume, capacity
8
what are the benefits of using engineering equations
travel and distance established
fuel efficiency calculations
number of passengers carried
weight calculations
distance vs fuel on vehicles
engineer design
9
define tolerance and its benefits
Tolerance is the variation allowed on any stated dimension in order for the product being manufactured to still achieve its desired function.
Tolerance is usually indicated in an engineering drawing with the plus-minus symbol (±), a mathematical sign used in
engineering to demonstrate the variation allowed over + and under - the stated dimension.
10
describe the difference between ferrous and non ferrous metals
Ferrous metals mostly contain iron. They have small amounts of other metals or elements added, to give the required properties. Ferrous metals are magnetic and give little resistance to
corrosion.
Non-ferrous metals do not contain iron, are not magnetic and are usually more resistant to corrosion than ferrous metals.
11
how would you operate a scriber tool
Hold the scriber like a pen on the rubber grip/ knurled part and move it along a ruler accept any straight edge tool
use the suitable end of the scribe
Hold the scribe at an angle of 45 degrees move it in the direction that the scriber head is tilted
use of scribe by drawing along the edge to create a visible line
12
what are the benefits of using sustainable products
Gives a business edge.
a company can promote itself as an environmentally
conscious business and stand out from other companies that are just there to make a profit. Consumers want to support businesses that reflect their values
Attract environmentally aware customers looking for more
sustainable products Some of them do so because they want to reduce their own environmental impact
13
