Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 361 · 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 tracks what is used up? (a) tester (b) recorder (c) team leader (d) materials manager
2. 2.⚖️ A lever bar balances. The load is ? N at 20 cm from the fulcrum. The effort is 20 N at 80 cm from the fulcrum on the other side. What is the missing force in newtons?
3. 3.💪 Is a tug of war a push or a pull? (a) a push (b) a pull
4. 4.Which job does a civil engineer do? (a) designs a flyover (b) designs bicycle gears (c) builds hospital scanners (d) designs a gearbox
5. 5.📐 A model car is drawn so that 1 cm stands for 20 cm. The car is 4 cm long in the drawing. How long is the real car, in centimetres?
6. 6.🛞 Is friction helpful or a problem here: machine parts heating up? (a) a problem (b) helpful
7. 7.🌉 A beam bridge 60 m long is split by piers into 2 equal spans. How long is each span, in metres?
8. 8.⚖️ Turning effect = force × … (a) mass of fulcrum (b) distance from fulcrum (c) colour of bar (d) time taken
9. 9.🌉 Which bridge type: “a log across a stream”? (a) beam bridge (b) suspension bridge (c) arch bridge
10. 10.🛠️ Which of these is a problem an engineer could solve? (a) a lost cricket match (b) a road that floods (c) a sad song (d) a boring story
11. 11.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 240 g and design C held 290 g. Which design was the strongest? (a) design C (b) design A (c) design B
12. 12.🔺 Which strong shape does a shelf on two brackets use? (a) triangle (b) arch (c) dome (d) beam
13. 13.📋 Criterion: the model bridge must hold at least 200 g. In the test it held 300 g. Does it meet the criterion? (a) No (b) Yes
14. 14.🏋️ A force of 40 N pushes a cart 10 m along the floor. How much work is done, in joules?
15. 15.🤝 In a design team, who shares out the jobs? (a) materials manager (b) recorder (c) tester (d) team leader
16. 16.📐 A beam is 280 cm long. How long is it in metres? =
17. 17.⚙️ Which simple machine is a water tap handle? (a) screw (b) inclined plane (c) lever (d) wheel and axle
18. 18.🏋️ In which unit is work measured? (a) watt hour (b) newton (N) (c) joule (J) (d) metre (m)
19. 19.♻️ Which is the BEST order to think about waste? (a) recycle, reuse, reduce (b) reuse, recycle, reduce (c) burn, bury, forget (d) reduce, reuse, recycle
20. 20.🏋️ An 8 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
21. 21.🧑‍🔧 Which kind of engineer plans a power grid? (a) electrical (b) aerospace (c) computer (d) civil
22. 22.📐 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?
23. 23.Which of these happens in the Create step? (a) make it better, retest (b) try it out (c) make a prototype (d) measure its performance
24. 24.🌉 In a stone arch bridge, the stones are in … (a) tension (b) no force (c) compression (d) friction
25. 25.🏋️ A machine lifts a load of 950 N when you push with 190 N. What is its mechanical advantage (MA)?
26. 26.🏋️ A machine lifts a load of 240 N when you push with 80 N. What is its mechanical advantage (MA)?
27. 27.🌉 Which bridge type: “good for short gaps”? (a) beam bridge (b) arch bridge (c) suspension bridge
28. 28.🏋️ A machine lifts a load of 700 N when you push with 140 N. What is its mechanical advantage (MA)?
29. 29.🔺 One side of a straw bridge is a row of 4 triangles standing point-up and point-down in turn, each sharing a side with the next. How many straws does it use?
30. 30.🔺 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?
31. 31.📋 Criteria are … (a) the limits on money (b) the tools you use (c) the team names (d) goals a design must meet
32. 32.Which of these is caused by muscular force? (a) a magnet picks up pins (b) lifting a school bag (c) shoes grip the floor (d) rubbing hands warms them
33. 33.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: ice 2 N, a glass sheet 6 N, a carpet 8 N, sandpaper 10 N. How many newtons more were needed on sandpaper than on ice?
34. 34.♻️ Reduce, reuse or recycle: reuse gift paper? (a) reduce (b) recycle (c) reuse
35. 35.🔄 Which design-process step is it to make a prototype? (a) Imagine (b) Test (c) Ask (d) Create
36. 36.🪝 Fixed or movable pulley: which one is on a flagpole top? (a) a movable pulley (b) a fixed pulley
37. 37.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
38. 38.🪢 A concrete slab weighing 1200 N rests evenly on 3 identical pillars. What compression force does each pillar carry, in newtons?
39. 39.True or false: an aerospace engineer builds a website. (a) True (b) False
40. 40.🔺 Which shape keeps its shape best when its corners are pinned? (a) triangle (b) square (c) hexagon (d) rectangle

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