Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 820 · 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.🔍 Which is the odd one out? (a) a crane lifting cable (b) a tug of war rope (c) a tall bridge tower (d) a swing chain
2. 2.Which of these makes a building safer in earthquakes? (a) using a heavy roof (b) adding cross bracing (c) building tall and narrow (d) leaving out steel bars
3. 3.Which of these happens in the Improve step? (a) find the limits (b) define the problem (c) measure its performance (d) make it better, retest
4. 4.🏋️ A force of 250 N pushes a cart 7 m along the floor. How much work is done, in joules?
5. 5.📋 For a model bridge challenge, is “lift a cup of water” a constraint or a criterion? (a) a criterion (b) a constraint
6. 6.🪢 A sign weighing 240 N hangs from 2 identical vertical ropes that share the load equally. What is the tension in each rope, in newtons?
7. 7.💪 In a tug of war, one team pulls left with 25 N and the other pulls right with 5 N. What is the size of the net force, in newtons?
8. 8.⚖️ A lever bar balances. The load is ? N at 30 cm from the fulcrum. The effort is 180 N at 40 cm from the fulcrum on the other side. What is the missing force in newtons?
9. 9.🛠️ A scientist asks “why does it happen?”. An engineer mostly asks … (a) who won the match? (b) how can we build it? (c) why is the sky blue? (d) what is for lunch?
10. 10.Which job is a spanner for? (a) tighten a nut (b) smooth a rough edge (c) cut a wooden plank (d) measure a long length
11. 11.📋 A design meets every criterion but costs more than the budget. Is it acceptable? (a) yes, always (b) only if it is red (c) yes, it works (d) no, it breaks a limit
12. 12.🏋️ A machine lifts a load of 600 N when you push with 200 N. What is its mechanical advantage (MA)?
13. 13.🪢 Tension or compression: a temple column? (a) compression (b) tension
14. 14.True or false: a shelf on two brackets uses a dome. (a) False (b) True
15. 15.True or false: to ignore the team plan is good teamwork. (a) True (b) False
16. 16.🏋️ A 20 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
17. 17.📋 For a model bridge challenge, is “hold up 500 g” a constraint or a criterion? (a) a criterion (b) a constraint
18. 18.💪 In a tug of war, one team pulls right with 55 N and the other pulls left with 45 N. What is the size of the net force, in newtons?
19. 19.True or false: sunlight is a non-renewable energy source. (a) True (b) False
20. 20.⚖️ A lever bar balances. The load is 160 N at 40 cm from the fulcrum. The effort is ? N at 80 cm from the fulcrum on the other side. What is the missing force in newtons?
21. 21.True or false: to drive in a nail, use a hammer. (a) False (b) True
22. 22.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) strengthen the weak part (c) build it with straws (d) choose and draw one
23. 23.🌉 Which bridge type: “pushes out on its ends”? (a) suspension bridge (b) beam bridge (c) arch bridge
24. 24.🔍 Which is the odd one out? (a) an axe blade (b) a knife edge (c) a chisel (d) a jar lid
25. 25.True or false: a mechanical engineer writes app software. (a) True (b) False
26. 26.🧑‍🔧 Which kind of engineer refines crude oil? (a) biomedical (b) chemical (c) electrical (d) civil
27. 27.True or false: ocean wave energy is a renewable energy source. (a) True (b) False
28. 28.🪢 A concrete slab weighing 16800 N rests evenly on 8 identical pillars. What compression force does each pillar carry, in newtons?
29. 29.🧑‍🔧 Which kind of engineer designs a flyover? (a) electrical (b) chemical (c) aerospace (d) civil
30. 30.🏋️ A 16 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
31. 31.🧪 Why repeat a test three times? (a) to use more paper (b) it looks busy (c) to get reliable results (d) the first is wrong
32. 32.⚖️ A seesaw balances. Kabir (540 N) sits 4 m from the pivot on one side; Zoya (720 N) sits ? m from the pivot on the other side. What is the missing distance in metres?
33. 33.🔍 Which is the odd one out? (a) a railway track (b) a dam (c) a water filter (d) a coral reef
34. 34.📋 For a model bridge challenge, is “stand in a fan breeze” a constraint or a criterion? (a) a criterion (b) a constraint
35. 35.True or false: to blame others for faults is poor teamwork. (a) True (b) False
36. 36.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
37. 37.🔍 Which is the odd one out? (a) a cloud (b) a mobile phone (c) a rainbow (d) a waterfall
38. 38.🏚️ Where should heavy water tanks go in a quake zone? (a) hanging outside (b) on the very top (c) low down (d) on a thin pole
39. 39.🪝 A winch has a wheel of radius 5 cm and an axle of radius 1 cm. What effort on the wheel lifts a 450 N bucket on the axle, in newtons? (ideal)
40. 40.📋 Criterion: the model bridge must hold at least 200 g. In the test it held 250 g. Does it meet the criterion? (a) No (b) Yes

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