MT4.1 does have 1 question that has 4 diagrams of trees being chopped into by chainsaws and asks which diagram will the tree fall in the direction shown by the arrow.
Another question is 4 diagrams of tyres and it asks which ones are over-inflated. However the diagram is quite poor so even if you know what an overinflated tyre should look like, you may still get it wrong.
MT4.1 is based on questions about joints, sliders, flag poles, circuits, cams, tyres, wheels, pulleys, rack and gears, bell cranks, pipes, levers, chains, rivets, etc. The questions in 4.1 are *extremely* varied. Difficulty of the questions varies. There are 36 questions to answer in 18 minutes. A few of them are easy, but most are difficult. Do not run out of time 36 questions is a lot to answer in just 18 minutes. However the pass mark was low (at least when I did it) so the test is not difficult to pass unless you run out of time and leave questions unanswered.
MT4.2 is completely different - instead of getting asked everything you just mainly get easy ones like "if cog A turns clockwise which way will cog B turn". It resembles the practice books and practice papers extremely well. MT4.1 is nothing like this!
Another thing about these mechanical tests is that they have got nothing to do with traction training, so yes the mechanical test can get rid of suitable applicants, but then so can the structured interview and several other of these "tests"