Free DAA Mechanical Comprehension practice
Mechanical comprehension covers everyday physics — levers and moments, gears, pulleys and forces. Each question shows a set-up as a diagram and asks you to work out what happens. No advanced maths is needed, just a feel for how simple machines behave.
Read the full mechanical comprehension guide →
Try a free sample
Two gears are meshed together. If gear A is turned clockwise (as shown), which way does gear B turn?
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These are original practice questions written to reflect the publicly described format of the Defence Aptitude Assessment (DAA). They are not the official questions and this site is not affiliated with or endorsed by the RAF, Royal Navy or Ministry of Defence — always follow the official guidance from your Armed Forces Careers Office.