Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 768 · 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 concrete slab weighing 1000 N rests evenly on 2 identical pillars. What compression force does each pillar carry, in newtons?
2. 2.⚖️ A seesaw balances. Arjun (? N) sits 4 m from the pivot on one side; Zoya (720 N) sits 4 m from the pivot on the other side. What is the missing weight in newtons?
3. 3.Which need does a telephone meet? (a) see very tiny things (b) talk to someone far away (c) carry many people far (d) make power from sunlight
4. 4.🏚️ Does having a wide base make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
5. 5.🔍 Which is the odd one out? (a) brass (b) aluminium (c) graphite (d) dry wood
6. 6.🏋️ A 19 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
7. 7.True or false: a fixed pulley halves the effort. (a) False (b) True
8. 8.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: ice 1 N, a wooden plank 5 N, a carpet 9 N, sandpaper 13 N. Which surface gave the most friction? (a) ice (b) a wooden plank (c) sandpaper (d) a carpet
9. 9.🔄 After testing, a design does not work well. What comes next? (a) give up (b) Imagine (c) Improve (d) Ask
10. 10.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) change lots at once (d) repeat each test
11. 11.🤝 In a design team, who tracks what is used up? (a) materials manager (b) tester (c) team leader (d) builder
12. 12.True or false: to leave tools on the floor is not safe. (a) True (b) False
13. 13.♻️ A project report has 12 pages. How many sheets of paper are needed if it is printed on both sides of each sheet?
14. 14.⚖️ Which class of lever is a pair of scissors? (a) class 2 (b) class 1 (c) class 3
15. 15.Which job does an aerospace engineer do? (a) refines crude oil (b) designs knee implants (c) builds rockets (d) lays out a highway
16. 16.📋 For a model bridge challenge, is “be under 30 cm tall” a constraint or a criterion? (a) a constraint (b) a criterion
17. 17.🪝 A pulley system has 4 rope sections holding up the load. To lift the load by 9 m, how many metres of rope must you pull?
18. 18.🏚️ Three solid model towers are made of the same material. Tower A is 60 cm tall on a 10 cm wide base, tower B is 150 cm tall on a 30 cm base and tower C is 160 cm tall on a 40 cm base. Which is the easiest to tip over? (a) tower A (b) tower C (c) tower B
19. 19.Which of these is a screw? (a) a screw jack (b) a bottle opener (c) a door stopper (d) a round doorknob
20. 20.🪢 A stage stands on 5 identical legs and each leg is squeezed with 250 N. What is the total load on the stage, in newtons?
21. 21.🌉 Which bridge type: “a curve under the deck”? (a) beam bridge (b) suspension bridge (c) arch bridge
22. 22.🔢 To follow the engineering design process, what comes right after “Ask”? (a) Test (b) Imagine (c) Plan (d) Improve
23. 23.📋 Criterion: the model bridge must hold at least 400 g. In the test it held 250 g. Does it meet the criterion? (a) No (b) Yes
24. 24.True or false: a chemical engineer designs a metro tunnel. (a) True (b) False
25. 25.🌉 In a stone arch bridge, the stones are in … (a) no force (b) tension (c) compression (d) friction
26. 26.True or false: using flexible joints makes a building less safe in earthquakes. (a) False (b) True
27. 27.Which of these uses an arch? (a) a slab over a canal (b) an electric pylon (c) a plank over a drain (d) an old stone bridge
28. 28.🪢 Tension or compression: a bridge pier? (a) tension (b) compression
29. 29.True or false: a flagpole rope wheel is a wheel and axle. (a) False (b) True
30. 30.Which of these is caused by friction? (a) a thrown ball comes down (b) a magnet picks up pins (c) a rolling ball slows (d) a river flows downhill
31. 31.🛞 More or less friction: powder on a carrom board? (a) more friction (b) less friction
32. 32.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to avoid testing (c) to sell them at once (d) to test ideas cheaply
33. 33.🤝 A team plans for 30 minutes, builds for 50 minutes and then tests for 15 minutes, one after another. How many minutes is that in all?
34. 34.🪝 Fixed or movable pulley: which one halves the effort? (a) a fixed pulley (b) a movable pulley
35. 35.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a carpet 11 N, ice 2 N, a glass sheet 3 N, a wooden plank 7 N. Which surface gave the least friction? (a) a glass sheet (b) a wooden plank (c) ice (d) a carpet
36. 36.🏚️ Three solid model towers are made of the same material. Tower A is 120 cm tall on a 40 cm wide base, tower B is 50 cm tall on a 10 cm base and tower C is 210 cm tall on a 30 cm base. Which is the easiest to tip over? (a) tower A (b) tower C (c) tower B
37. 37.What does the builder do? (a) puts the model together (b) keeps the team on track (c) shares out the jobs (d) tracks what is used up
38. 38.What does the team leader do? (a) puts the model together (b) runs the tests (c) cuts and joins parts (d) shares out the jobs
39. 39.True or false: a temple column is in tension (pulled). (a) True (b) False
40. 40.🛠️ What does an engineer mainly do? (a) sells tickets (b) grows crops (c) only paints pictures (d) designs useful solutions

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