Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 716 · 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.🤝 In a design team, who keeps the team on track? (a) team leader (b) tester (c) builder (d) materials manager
2. 2.🏚️ Does fitting rubber base pads make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
3. 3.🌉 Which bridge type: “the simplest bridge”? (a) arch bridge (b) beam bridge (c) suspension bridge
4. 4.🔍 Which is the odd one out? (a) using a light roof (b) adding cross bracing (c) having a wide base (d) stacking loose bricks
5. 5.⚖️ A seesaw balances. Kabir (390 N) sits 4 m from the pivot on one side; Ravi (? N) sits 3 m from the pivot on the other side. What is the missing weight in newtons?
6. 6.💪 Is a tug of war a push or a pull? (a) a push (b) a pull
7. 7.🧪 A paper bridge was tested three times. It held 280 g, 130 g and 280 g. What is the mean (average) load it held, in grams?
8. 8.🏋️ In which unit is work measured? (a) watt hour (b) newton (N) (c) metre (m) (d) joule (J)
9. 9.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “load it with coins”? (a) sketch three ideas (b) load it with coins
10. 10.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) choose and draw one (b) sketch three ideas (c) load it with coins (d) build it with straws
11. 11.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
12. 12.⚖️ Along a straight bar, measured from the left end, the effort is at 30 cm, the fulcrum at 50 cm and the load at 70 cm. Which class of lever is it? (a) class 1 (b) class 2 (c) class 3
13. 13.🔍 Which is the odd one out? (a) clamp wood before sawing (b) let adults use hot glue (c) put tools back after use (d) leave tools on the floor
14. 14.🏋️ A smooth ramp is 4 m long and rises 2 m. What effort pushes a 1600 N box up it, in newtons? (ideal ramp, no friction)
15. 15.📐 On a plan, 1 cm stands for 20 m. A wall is 7 cm long on the plan. How long is the real wall, in metres?
16. 16.Which of these makes a building safer in earthquakes? (a) stacking loose bricks (b) adding steel to concrete (c) building tall and narrow (d) leaving out steel bars
17. 17.🧑‍🔧 Which branch of engineering works on aeroplanes and rockets? (a) aerospace (b) computer (c) civil (d) chemical
18. 18.🪝 A well winch has a handle (wheel) of radius 40 cm turning an axle of radius 5 cm. What is its mechanical advantage (MA)?
19. 19.Which of these uses triangles? (a) a planetarium roof (b) a slab over a canal (c) an igloo (d) an electric pylon
20. 20.Which of these is reuse (use again)? (a) buy less packaging (b) give old books away (c) turn plastic into tiles (d) carry a cloth bag
21. 21.🛠️ What does an engineer mainly do? (a) grows crops (b) sells tickets (c) only paints pictures (d) designs useful solutions
22. 22.🔢 To follow the engineering design process, which is the LAST step? (a) Ask (b) Plan (c) Create (d) Improve
23. 23.🪢 Compression is a force that … (a) pulls or stretches (b) makes light (c) pushes or squeezes (d) cools things
24. 24.True or false: to turn a screw, use a hammer. (a) True (b) False
25. 25.🧑‍🔧 Which branch of engineering designs buildings, roads and bridges? (a) computer (b) civil (c) biomedical (d) chemical
26. 26.True or false: to ignore the team plan is poor teamwork. (a) True (b) False
27. 27.💪 Two children push a box to the right, one with 15 N and the other with 20 N. What is the net (total) force on the box, in newtons?
28. 28.🦺 How should you carry scissors? (a) points down, closed (b) by the blades (c) while running (d) points up, open
29. 29.⚖️ Along a straight bar, measured from the left end, the effort is at 30 cm, the fulcrum at 40 cm and the load at 20 cm. Which class of lever is it? (a) class 1 (b) class 2 (c) class 3
30. 30.True or false: “good for short gaps” is a beam bridge. (a) False (b) True
31. 31.♻️ Reduce, reuse or recycle: use a jar as a pen stand? (a) reuse (b) reduce (c) recycle
32. 32.Which of these is found in nature? (a) a volcano (b) a mobile phone (c) a railway track (d) a bridge
33. 33.⚖️ A lever balances when … (a) both weights are equal (b) turning effects match (c) the bar is short (d) the fulcrum moves
34. 34.🔺 A beam bends under a load. Its top side is … (a) stretched (tension) (b) floating (c) squeezed (compression) (d) not affected
35. 35.📐 On a plan, 1 cm stands for 10 m. A wall is 3 cm long on the plan. How long is the real wall, in metres?
36. 36.🔺 One side of a straw bridge is a row of 2 triangles standing point-up and point-down in turn, each sharing a side with the next. How many straws does it use?
37. 37.🔄 Which design-process step is it to make a prototype? (a) Create (b) Imagine (c) Plan (d) Test
38. 38.🌉 In a stone arch bridge, the stones are in … (a) no force (b) friction (c) tension (d) compression
39. 39.🌉 A beam bridge 400 m long is split by piers into 8 equal spans. How long is each span, in metres?
40. 40.🛠️ People need to go through a mountain. Which invention helps? (a) a tunnel (b) a dam (c) a bridge (d) a telephone

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