Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 461 · 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 (? N) sits 2 m from the pivot on one side; Meena (280 N) sits 3 m from the pivot on the other side. What is the missing weight in newtons?
2. 2.True or false: a civil engineer designs car engines. (a) True (b) False
3. 3.True or false: “the simplest bridge” is an arch bridge. (a) False (b) True
4. 4.🏋️ A force of 270 N did 810 J of work. How many metres did the object move?
5. 5.🔍 Which is the odd one out? (a) use at most 20 straws (b) use only paper and tape (c) be under 30 cm tall (d) float for 1 minute
6. 6.🔄 Is the engineering design process done only once? (a) only for big jobs (b) no, it repeats (c) yes, only once (d) only on Sundays
7. 7.⚖️ A lever bar balances. The load is 240 N at 20 cm from the fulcrum. The effort is 120 N at ? cm from the fulcrum on the other side. What is the missing distance in centimetres?
8. 8.True or false: “deck hangs from cables” is a suspension bridge. (a) False (b) True
9. 9.True or false: an aerospace engineer builds rockets. (a) False (b) True
10. 10.♻️ Reduce, reuse or recycle: fix a dripping tap? (a) reduce (b) recycle (c) reuse
11. 11.🪢 A sign weighing 250 N hangs from 5 identical vertical ropes that share the load equally. What is the tension in each rope, in newtons?
12. 12.⚖️ A seesaw balances. Ravi (? N) sits 3 m from the pivot on one side; Arjun (600 N) sits 4 m from the pivot on the other side. What is the missing weight in newtons?
13. 13.True or false: to carry scissors closed is safe. (a) True (b) False
14. 14.♻️ Reduce, reuse or recycle: buy less packaging? (a) recycle (b) reduce (c) reuse
15. 15.🤝 In a design team, who tracks what is used up? (a) recorder (b) team leader (c) builder (d) materials manager
16. 16.🪢 Which material is good in tension but useless in compression? (a) a stone (b) a concrete block (c) a brick (d) a rope
17. 17.⚖️ A seesaw balances. Zoya (? N) sits 4 m from the pivot on one side; Arjun (800 N) sits 1 m from the pivot on the other side. What is the missing weight in newtons?
18. 18.🦺 What protects your eyes when sawing or drilling? (a) a cap (b) safety goggles (c) nothing (d) sunglasses
19. 19.🛞 More or less friction: a smooth steel slide? (a) more friction (b) less friction
20. 20.True or false: to blame others for faults is good teamwork. (a) True (b) False
21. 21.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a glass sheet 2 N, a wooden plank 5 N, a carpet 6 N, sandpaper 8 N. Which surface gave the most friction? (a) a glass sheet (b) a carpet (c) a wooden plank (d) sandpaper
22. 22.True or false: a civil engineer lays out a highway. (a) False (b) True
23. 23.🪝 Fixed or movable pulley: which one rises with the load? (a) a movable pulley (b) a fixed pulley
24. 24.True or false: a round palace roof uses triangles. (a) True (b) False
25. 25.🌉 A beam bridge is 200 m long. Piers split it into equal spans of 20 m. How many spans are there?
26. 26.True or false: “a log across a stream” is a suspension bridge. (a) True (b) False
27. 27.🔧 Which tool would you use to measure a long length? (a) a tape measure (b) pliers (c) a saw (d) a protractor
28. 28.True or false: to build the model is the Improve step. (a) True (b) False
29. 29.🪢 A concrete slab weighing 13600 N rests evenly on 8 identical pillars. What compression force does each pillar carry, in newtons?
30. 30.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) read the challenge rules (b) sketch three ideas (c) strengthen the weak part (d) build it with straws
31. 31.⚙️ How many simple machines are there in the usual list? (a) 6 (b) 12 (c) 10 (d) 3
32. 32.🧱 Is steel an electrical conductor or an insulator? (a) an insulator (b) a conductor
33. 33.⚖️ Which class of lever is a pair of pliers? (a) class 1 (b) class 3 (c) class 2
34. 34.True or false: a raincoat needs a waterproof material. (a) True (b) False
35. 35.📐 On a plan, 1 cm stands for 10 m. A wall is 4 cm long on the plan. How long is the real wall, in metres?
36. 36.True or false: a computer engineer keeps data safe online. (a) False (b) True
37. 37.True or false: a temple column is in tension (pulled). (a) False (b) True
38. 38.Which of these is reuse (use again)? (a) melt cans into new cans (b) turn plastic into tiles (c) print on both sides (d) give old books away
39. 39.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
40. 40.🔺 Which strong shape does a curved stone doorway use? (a) dome (b) arch (c) triangle (d) beam

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