COMPREHENSIVE STUDY GUIDE 2026 FULL
QUESTIONS AND SOLUTIONS GRADED A+
◍ evaluate.
Answer: To assess something (such as a design solution) and form an idea
about its merit or value (such as whether it meets project criteria and
constraints).
◍ ohm's law AC.
Answer: I = V/Z
◍ What processes do metal, wood and plastic go through?.
Answer: Metal: Casting, Forging and
Machining(milling/turning/drilling)Wood: Parts are cut using saws, routers.
Also drilled and sandedPlastic: Injection Moulding and other industrial
moulding techniques.
◍ continuity of mass flow.
Answer: pA1 X V1 = pA2 X V2
◍ 2 advantages and disadvantages of just in time manufacturing?.
Answer: Advantage: As products are made to customer orders, there is no
overproduction, reducing the build up of stock or inventory such as raw
materials and finished goods. A reduction in stock or inventory also reduces
costs as there is less space required for storage of materials or finished
goods.Disadvantage: By not carrying much stock, it is imperative you have
the correct procedures in place to ensure stock can become readily available,
and quickly. To do this, you need to have a good relationship with your
supplier(s). You need to factor that into planning for inventory levels,
ensuring suppliers are able to meet different volume requirements at
, different times.
◍ 2 advantages and disadvantages of sand casting :D.
Answer: Advantage: Low cost Can produce large castingsDisadvantage:
Bad surface finish (due to sand indentation) Many defects arise in the
casting (no good control on the process, die casting is much better)
◍ What must you look at during a life cycle assesment?.
Answer: Extracting materialsProcessingTransportingUseDisposal of the
product
◍ Volume of a cone.
Answer: V=1/3πr²h
◍ Cubic Boron Nitride (Ceramic).
Answer: -Abrasive (wears away other materials), similar structure to
diamond -Filing/wearing away metals. Tool bits, cutting tools-Harder than
everything else it might have to smooth or cut (can be used on super
alloys)-Normal Steel files/cutting bits would blunt quickly on hard materials
(like super alloys)
◍ distance.
Answer: s = ut + ½at²
◍ criteria.
Answer: the desired outcomes of your solution
◍ Properties of GRP?.
Answer: - Good thermal insulation properties. - It has a high strength to
weight ratio.- Flexible AND high tensile strength.-Stronger and stiffer than
plastics alone e.g. polypropylene
◍ kinetic energy.
Answer: ½mv²
◍ Which engineering skill is being used when determining what materials
have been used to make models in the past?.
Answer: research