Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 167 · 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.True or false: oil on a squeaky hinge gives more friction. (a) False (b) True
2. 2.🏚️ Does having a wide base make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
3. 3.🏚️ Does fitting rubber base pads make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
4. 4.Which of these makes a building safer in earthquakes? (a) building tall and narrow (b) using a heavy roof (c) using a light roof (d) making brittle joints
5. 5.🤝 In a design team, who shares out the jobs? (a) builder (b) recorder (c) materials manager (d) team leader
6. 6.True or false: a lift helps people go through a mountain. (a) False (b) True
7. 7.🪢 Tension or compression: a tent guy rope? (a) tension (b) compression
8. 8.♻️ Which energy source will never run out? (a) diesel (b) coal (c) petrol (d) sunlight
9. 9.🧱 Which property matters most for a window pane? (a) flexible (b) heat insulator (c) transparent (d) electrical conductor
10. 10.🤝 In a design team, who puts the model together? (a) materials manager (b) tester (c) team leader (d) builder
11. 11.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) strengthen the weak part (b) read the challenge rules (c) sketch three ideas (d) load it with coins
12. 12.🔧 Which tool would you use to make a hole in wood? (a) pliers (b) a hand drill (c) a saw (d) a spirit level
13. 13.🔄 Which design-process step is it to make it better, retest? (a) Plan (b) Improve (c) Test (d) Imagine
14. 14.🛠️ Is a waterfall made by engineers or found in nature? (a) found in nature (b) made by engineers
15. 15.🪝 A pulley system lifts a 400 N load with an effort of 100 N. What is its mechanical advantage (MA)?
16. 16.🔍 Which is the odd one out? (a) leave tools on the floor (b) clamp wood before sawing (c) use a cracked tool (d) run while holding tools
17. 17.Which of these uses a dome? (a) a plank over a drain (b) a planetarium roof (c) a bicycle frame (d) an old stone bridge
18. 18.Which of these makes a building less safe in earthquakes? (a) fitting rubber base pads (b) adding steel to concrete (c) stacking loose bricks (d) having a wide base
19. 19.🔄 Which design-process step is it to draw a labelled diagram? (a) Plan (b) Ask (c) Imagine (d) Create
20. 20.🦺 In the workshop, is it safe to leave tools on the floor? (a) safe (b) not safe
21. 21.📋 A design meets every criterion but costs more than the budget. Is it acceptable? (a) yes, it works (b) only if it is red (c) no, it breaks a limit (d) yes, always
22. 22.🏋️ A force of 430 N did 430 J of work. How many metres did the object move?
23. 23.True or false: an umbrella cover needs a waterproof material. (a) False (b) True
24. 24.📐 On a plan, 1 cm stands for 20 m. A wall is 6 cm long on the plan. How long is the real wall, in metres?
25. 25.Which of these happens in the Imagine step? (a) make it better, retest (b) think of wild ideas (c) measure its performance (d) build the model
26. 26.Which need does a lift meet? (a) keep food fresh longer (b) reach a top floor fast (c) talk to someone far away (d) make power from sunlight
27. 27.🔄 Which design-process step is it to ask who will use it? (a) Improve (b) Ask (c) Plan (d) Imagine
28. 28.🔍 Which is the odd one out? (a) a round doorknob (b) a water tap handle (c) a steering wheel (d) a seesaw
29. 29.True or false: “deck hangs from cables” is a suspension bridge. (a) False (b) True
30. 30.📋 For a model bridge challenge, is “use only paper and tape” a constraint or a criterion? (a) a criterion (b) a constraint
31. 31.True or false: a microscope helps people store water for summer. (a) True (b) False
32. 32.True or false: to drive in a nail, use a hand drill. (a) True (b) False
33. 33.🔺 One side of a straw bridge is a row of 6 triangles standing point-up and point-down in turn, each sharing a side with the next. How many straws does it use?
34. 34.📋 Your team’s budget is ₹84. You must buy one roll of tape for ₹15. Straws cost ₹4 each. What is the greatest number of straws you can buy?
35. 35.True or false: an electric pylon uses a beam. (a) False (b) True
36. 36.⚖️ A seesaw balances. Asha (? N) sits 2 m from the pivot on one side; Ravi (240 N) sits 1 m from the pivot on the other side. What is the missing weight in newtons?
37. 37.True or false: using flexible joints makes a building less safe in earthquakes. (a) True (b) False
38. 38.🛞 More or less friction: powder on a carrom board? (a) less friction (b) more friction
39. 39.🪢 A concrete slab weighing 2100 N rests evenly on 7 identical pillars. What compression force does each pillar carry, in newtons?
40. 40.🪝 A well winch has a handle (wheel) of radius 6 cm turning an axle of radius 3 cm. What is its mechanical advantage (MA)?

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