So I would say answer B
a) This is usually a correct statement
b) Again this is often the case, but not always.
c) Not necessarily so, some production machines can produce very accurate parts in a very short time, e.g. Centreless grinding of precision round components is very quick.
d) Again, not necessarily so. If you are asking about volume production then this is probably not the case. If you are asking about making a low numbers of parts then these may be made in a "toolroom" where the skill level would be high.
If you want to generalise then you could make out a case for points a,b,c and d being correct, BUT you could also give examples where any of a,b,c and d are very questionable.
Very generally, accuracy does cost you in time and money.
As far as I know using smaller tolerances on your components design will make your designed outputs to be more accurate (im not sure thoug with the expensive machines are required) , but ofcourse it is expected to be more expensive than those with larger tolerance
Hope it might help :)
B is the most needed.
what is the implication of using tight(small) tolerances on your components design compared to a larger or coarser tolerance
a) they are more expensive to achieve
b)usually more accurate and expensive machines are required
c)the machining takes longer to achieve
d)greater skill levels are required
