Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 126 · 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 flat frame has 5 straight sides joined by loose pins at the corners. What is the least number of corner-to-corner braces needed to make it rigid?
2. 2.📐 On a plan, 1 cm stands for 5 m. A real bridge is 100 m long. How long is it on the plan, in centimetres?
3. 3.Which of these is reduce (use less)? (a) give old books away (b) print on both sides (c) melt glass into new jars (d) pulp old paper
4. 4.🔍 Which is the odd one out? (a) fitting rubber base pads (b) having a wide base (c) adding steel to concrete (d) building tall and narrow
5. 5.🏋️ A force of 410 N did 4100 J of work. How many metres did the object move?
6. 6.⚖️ A lever bar balances. The load is 630 N at ? cm from the fulcrum. The effort is 180 N at 70 cm from the fulcrum on the other side. What is the missing distance in centimetres?
7. 7.🧪 A paper bridge was tested three times. It held 250 g, 130 g and 310 g. What is the mean (average) load it held, in grams?
8. 8.⚖️ A seesaw balances. Zoya (? N) sits 2 m from the pivot on one side; Meena (200 N) sits 1 m from the pivot on the other side. What is the missing weight in newtons?
9. 9.🏚️ 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 20 cm tall on a 10 cm base and tower C is 80 cm tall on a 20 cm base. Which is the hardest to tip over? (a) tower C (b) tower A (c) tower B
10. 10.🪝 A pulley system has 2 rope sections holding up the load. To lift the load by 8 m, how many metres of rope must you pull?
11. 11.🪝 Fixed or movable pulley: which one only changes direction? (a) a fixed pulley (b) a movable pulley
12. 12.Which of these makes a building safer in earthquakes? (a) building tall and narrow (b) making brittle joints (c) leaving out steel bars (d) adding cross bracing
13. 13.🤝 A team plans for 30 minutes, builds for 30 minutes and then tests for 30 minutes, one after another. How many minutes is that in all?
14. 14.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “build it with straws”? (a) load it with coins (b) build it with straws
15. 15.True or false: a biomedical engineer keeps data safe online. (a) True (b) False
16. 16.🌉 A beam bridge is 400 m long. Piers split it into equal spans of 40 m. How many spans are there?
17. 17.🦺 In the workshop, is it safe to cut away from your body? (a) safe (b) not safe
18. 18.🌉 A beam bridge 120 m long rests on the two river banks and on piers in between, making equal spans of 40 m. How many piers are there?
19. 19.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: ice 2 N, a glass sheet 3 N, a wooden plank 6 N, a carpet 8 N. Which surface gave the most friction? (a) a wooden plank (b) a glass sheet (c) a carpet (d) ice
20. 20.True or false: a tow rope on a car is in compression (pushed). (a) False (b) True
21. 21.⚖️ Along a straight bar, measured from the left end, the effort is at 30 cm, the fulcrum at 60 cm and the load at 90 cm. Which class of lever is it? (a) class 3 (b) class 2 (c) class 1
22. 22.🧱 Which property matters most for a hair band? (a) electrical conductor (b) flexible (c) transparent (d) waterproof
23. 23.True or false: “the longest spans of all” is an arch bridge. (a) True (b) False
24. 24.🤝 Is it good or poor teamwork to listen to every idea? (a) good teamwork (b) poor teamwork
25. 25.🔧 Which tool would you use to check a shelf is level? (a) a tape measure (b) a protractor (c) sandpaper (d) a spirit level
26. 26.Which of these is an arch bridge? (a) stones squeezed together (b) deck hangs from cables (c) a rope bridge in hills (d) a log across a stream
27. 27.What does the tester do? (a) keeps the team on track (b) runs the tests (c) tracks what is used up (d) collects the supplies
28. 28.True or false: having a wide base makes a building less safe in earthquakes. (a) False (b) True
29. 29.♻️ A sustainable design … (a) wastes water (b) lasts one day (c) protects the future (d) uses the most plastic
30. 30.🏚️ Three solid model towers are made of the same material. Tower A is 60 cm tall on a 30 cm wide base, tower B is 120 cm tall on a 40 cm base and tower C is 30 cm tall on a 30 cm base. Which is the easiest to tip over? (a) tower B (b) tower A (c) tower C
31. 31.🌉 Which bridge type: “deck hangs from cables”? (a) arch bridge (b) suspension bridge (c) beam bridge
32. 32.🏋️ In which unit is work measured? (a) watt hour (b) metre (m) (c) newton (N) (d) joule (J)
33. 33.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
34. 34.Which of these uses a beam? (a) an igloo (b) a lintel over a door (c) a fort gateway (d) a curved stone doorway
35. 35.Which of these needs an electrical conductor? (a) a roof sheet (b) a switch contact (c) a yoga mat (d) a boat hull
36. 36.🌉 Which bridge type can cross the widest gap in one span? (a) suspension bridge (b) beam bridge (c) log bridge (d) arch bridge
37. 37.⚖️ Which class of lever is a wheelbarrow? (a) class 1 (b) class 2 (c) class 3
38. 38.🦺 What protects your eyes when sawing or drilling? (a) sunglasses (b) a cap (c) nothing (d) safety goggles
39. 39.🪝 A pulley system has 3 rope sections holding up the load. To lift the load by 4 m, how many metres of rope must you pull?
40. 40.True or false: to check a shelf is level, use a spirit level. (a) False (b) True

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