Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 619 · 40 questions

Engineer's tip (Find the topic, use the idea): Find the topic: design process, force, machine, lever, structure, material, bridge or scale. Use that lesson’s rule — what is in the middle, load × distance = effort × distance, work = force × distance, real = drawing × scale. Write the calculation before you answer.

1. 1.⚖️ A seesaw balances. Arjun (110 N) sits 1 m from the pivot on one side; Meena (110 N) sits ? m from the pivot on the other side. What is the missing distance in metres?
2. 2.📋 A constraint is … (a) a kind of glue (b) a final test (c) a goal for success (d) a limit you must keep to
3. 3.🔧 Which tool would you use to drive in a nail? (a) a hand drill (b) a spirit level (c) a hammer (d) sandpaper
4. 4.⚙️ Most simple machines make work easier by letting us … (a) stop all friction (b) use a smaller force (c) switch off gravity (d) make new energy
5. 5.True or false: a tent guy rope is in compression (pushed). (a) True (b) False
6. 6.Which of these is caused by muscular force? (a) rubbing hands warms them (b) a compass needle turns (c) squeezing a lemon (d) a fridge magnet sticks
7. 7.💪 In a tug of war, one team pulls left with 15 N and the other pulls right with 10 N. What is the size of the net force, in newtons?
8. 8.🔄 Is the engineering design process done only once? (a) only on Sundays (b) no, it repeats (c) only for big jobs (d) yes, only once
9. 9.True or false: to guess, do not measure is poor testing. (a) True (b) False
10. 10.🪝 A load of 120 N hangs from a pulley system in which 3 rope sections hold up the load. What effort is needed, in newtons? (ideal pulleys)
11. 11.🪝 A pulley system lifts a 750 N load with an effort of 250 N. What is its mechanical advantage (MA)?
12. 12.True or false: ocean wave energy is a non-renewable energy source. (a) True (b) False
13. 13.🧱 Which material is best for a cooking pot handle? (a) iron (b) copper (c) wood or plastic (d) aluminium
14. 14.🪝 A bucket weighing 270 N is lifted with a single fixed pulley at the top of a well. What effort is needed, in newtons? (ideal pulley, no friction)
15. 15.Which of these uses a dome? (a) a plank over a drain (b) an igloo (c) a crane arm (d) an old stone bridge
16. 16.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: sandpaper 13 N, ice 3 N, a wooden plank 6 N, a carpet 10 N. Which surface gave the least friction? (a) sandpaper (b) ice (c) a wooden plank (d) a carpet
17. 17.🛞 Which surface gives the MOST friction to a sliding block? (a) sandpaper (b) ice (c) glass (d) polished marble
18. 18.True or false: a chemical engineer runs a fertiliser plant. (a) True (b) False
19. 19.🤝 Is it good or poor teamwork to talk over others? (a) good teamwork (b) poor teamwork
20. 20.🔺 A flat frame has 11 straight sides joined by loose pins at the corners. What is the least number of corner-to-corner braces needed to make it rigid?
21. 21.Which of these happens in the Test step? (a) pick the build order (b) dream up possible fixes (c) check it against goals (d) ask who will use it
22. 22.🔄 After testing, a design does not work well. What comes next? (a) Ask (b) give up (c) Improve (d) Imagine
23. 23.📐 How many millimetres are in 1 centimetre? (a) 10 (b) 100 (c) 5 (d) 1000
24. 24.📐 On a plan, 1 cm stands for 20 m. A real bridge is 100 m long. How long is it on the plan, in centimetres?
25. 25.🏋️ A force of 130 N did 1300 J of work. How many metres did the object move?
26. 26.💪 Which force is at work: pedalling a cycle? (a) gravity (b) muscular force (c) magnetic force (d) friction
27. 27.🔄 Which design-process step is it to brainstorm many ideas? (a) Imagine (b) Plan (c) Test (d) Ask
28. 28.True or false: a lemon squeezer is a class 3 lever (effort in the middle). (a) False (b) True
29. 29.🤝 In a design team, who keeps the team on track? (a) materials manager (b) tester (c) team leader (d) recorder
30. 30.🔺 A flat frame has 6 straight sides joined by loose pins at the corners. What is the least number of corner-to-corner braces needed to make it rigid?
31. 31.⚖️ A lever bar balances. The load is 900 N at 50 cm from the fulcrum. The effort is ? N at 100 cm from the fulcrum on the other side. What is the missing force in newtons?
32. 32.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: ice 1 N, a glass sheet 5 N, a wooden plank 8 N, a carpet 11 N. Which surface gave the most friction? (a) a wooden plank (b) ice (c) a carpet (d) a glass sheet
33. 33.🛞 More or less friction: a wet tiled floor? (a) less friction (b) more friction
34. 34.🧪 A paper bridge was tested three times. It held 390 g, 270 g and 270 g. What is the mean (average) load it held, in grams?
35. 35.🔍 Which is the odd one out? (a) skip writing results (b) use the same load (c) use a new load each time (d) guess, do not measure
36. 36.True or false: a biomedical engineer refines crude oil. (a) False (b) True
37. 37.⚙️ How many simple machines are there in the usual list? (a) 3 (b) 10 (c) 12 (d) 6
38. 38.📋 A design meets every criterion but costs more than the budget. Is it acceptable? (a) only if it is red (b) no, it breaks a limit (c) yes, it works (d) yes, always
39. 39.🏋️ In which unit is work measured? (a) newton (N) (b) metre (m) (c) watt hour (d) joule (J)
40. 40.🛠️ People need to cross a wide river. Which invention helps? (a) a dam (b) a telephone (c) a bridge (d) a tunnel

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