Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 864 · 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 model car is drawn so that 1 cm stands for 20 cm. The car is 15 cm long in the drawing. How long is the real car, in centimetres?
2. 2.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
3. 3.🔍 Which is the odd one out? (a) finish in 40 minutes (b) be under 30 cm tall (c) use at most 20 straws (d) hold up 500 g
4. 4.🔍 Which is the odd one out? (a) a crane hook block (b) a crowbar (c) a seesaw (d) a nutcracker
5. 5.🤝 Is it good or poor teamwork to agree before changing? (a) good teamwork (b) poor teamwork
6. 6.Which of these needs a heat insulator? (a) an umbrella cover (b) a skipping rope (c) a boat hull (d) an oven glove
7. 7.🪢 A beam rests on two supports and is pressed down in the middle. Its bottom edge is … (a) squeezed (compression) (b) not affected (c) twisted (d) stretched (tension)
8. 8.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 320 g and design C held 220 g. Which design was the strongest? (a) design A (b) design C (c) design B
9. 9.🔍 Which is the odd one out? (a) dry wood (b) cotton cloth (c) plastic (d) graphite
10. 10.🔍 Which is the odd one out? (a) repeat each test (b) test it only once (c) use a new load each time (d) skip writing results
11. 11.🤝 In a design team, who shares out the jobs? (a) recorder (b) builder (c) tester (d) team leader
12. 12.🔄 In which step do engineers draw a labelled diagram? (a) Test (b) Improve (c) Ask (d) Plan
13. 13.🛠️ People need to carry many people far. Which invention helps? (a) a train (b) a tunnel (c) a microscope (d) a bridge
14. 14.🔢 To follow the engineering design process, which comes first: “Ask” or “Test”? (a) Test (b) Ask
15. 15.Which of these happens in the Improve step? (a) redesign after testing (b) list the materials (c) make a prototype (d) draw a labelled diagram
16. 16.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) choose and draw one (b) load it with coins (c) build it with straws (d) strengthen the weak part
17. 17.⚖️ Along a straight bar, measured from the left end, the effort is at 30 cm, the fulcrum at 0 cm and the load at 50 cm. Which class of lever is it? (a) class 1 (b) class 3 (c) class 2
18. 18.⚖️ A lever bar balances. The load is 160 N at ? cm from the fulcrum. The effort is 80 N at 20 cm from the fulcrum on the other side. What is the missing distance in centimetres?
19. 19.📐 A beam is 930 cm long. How long is it in metres? =
20. 20.True or false: a swing chain is in compression (pushed). (a) True (b) False
21. 21.📋 A constraint is … (a) a kind of glue (b) a final test (c) a limit you must keep to (d) a goal for success
22. 22.True or false: sunlight is a non-renewable energy source. (a) False (b) True
23. 23.📋 Criterion: the model bridge must hold at least 1000 g. In the test it held 1100 g. Does it meet the criterion? (a) Yes (b) No
24. 24.True or false: to carry scissors closed is safe. (a) False (b) True
25. 25.True or false: a telephone helps people make water safe to drink. (a) True (b) False
26. 26.True or false: a well-bucket rope wheel is a lever. (a) True (b) False
27. 27.🪝 A pulley system has 2 rope sections holding up the load. To lift the load by 5 m, how many metres of rope must you pull?
28. 28.⚖️ A seesaw balances. Arjun (? N) sits 1 m from the pivot on one side; Ravi (200 N) sits 3 m from the pivot on the other side. What is the missing weight in newtons?
29. 29.🌉 Which bridge type can cross the widest gap in one span? (a) arch bridge (b) beam bridge (c) suspension bridge (d) log bridge
30. 30.🔍 Which is the odd one out? (a) a tyre with deep treads (b) a wheel on ball bearings (c) oil on a squeaky hinge (d) a smooth steel slide
31. 31.🔺 A beam bends under a load. Its top side is … (a) not affected (b) floating (c) squeezed (compression) (d) stretched (tension)
32. 32.True or false: to make a prototype is the Ask step. (a) False (b) True
33. 33.🔺 One side of a straw bridge is a row of 13 triangles standing point-up and point-down in turn, each sharing a side with the next. How many straws does it use?
34. 34.🏋️ Work is done when a force moves something … (a) without moving it (b) only upwards (c) through a distance (d) very slowly
35. 35.⚖️ On a seesaw, a heavier child should sit … (a) anywhere (b) closer to the pivot (c) on the pivot (d) farther from the pivot
36. 36.🔺 A frame shaped like a square is made of straws joined by loose pins, with 1 corner-to-corner brace. Is it rigid or wobbly? (a) rigid (b) wobbly
37. 37.Which of these is a suspension bridge? (a) deck hangs from cables (b) a log across a stream (c) pushes out on its ends (d) a flat deck on piers
38. 38.🤝 In a design team, who collects the supplies? (a) builder (b) team leader (c) materials manager (d) recorder
39. 39.🤝 In a design team, who writes down results? (a) tester (b) team leader (c) builder (d) recorder
40. 40.🪝 A well winch has a handle (wheel) of radius 25 cm turning an axle of radius 5 cm. What is its mechanical advantage (MA)?

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