Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 446 · 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 lever bar balances. The load is 280 N at 50 cm from the fulcrum. The effort is 200 N at ? cm from the fulcrum on the other side. What is the missing distance in centimetres?
2. 2.🦺 In the workshop, is it safe to cut towards your hand? (a) safe (b) not safe
3. 3.🏚️ Three solid model towers are made of the same material. Tower A is 80 cm tall on a 40 cm wide base, tower B is 40 cm tall on a 40 cm base and tower C is 120 cm tall on a 30 cm base. Which is the hardest to tip over? (a) tower C (b) tower B (c) tower A
4. 4.Which of these is in tension (pulled)? (a) a pillar under a roof (b) a squeezed spring (c) a table leg (d) a suspension cable
5. 5.🪝 A load of 600 N hangs from a pulley system in which 4 rope sections hold up the load. What effort is needed, in newtons? (ideal pulleys)
6. 6.🪢 A beam rests on two supports and is pressed down in the middle. Its bottom edge is … (a) squeezed (compression) (b) not affected (c) stretched (tension) (d) twisted
7. 7.⚖️ Along a straight bar, measured from the left end, the effort is at 0 cm, the fulcrum at 10 cm and the load at 30 cm. Which class of lever is it? (a) class 2 (b) class 3 (c) class 1
8. 8.True or false: a fixed pulley needs effort = load. (a) False (b) True
9. 9.📐 A beam is 230 cm long. How long is it in metres? =
10. 10.True or false: powder on a carrom board gives more friction. (a) False (b) True
11. 11.🦺 In the workshop, is it safe to carry scissors closed? (a) safe (b) not safe
12. 12.🔺 One side of a straw bridge is a row of 7 triangles standing point-up and point-down in turn, each sharing a side with the next. How many straws does it use?
13. 13.🔍 Which is the odd one out? (a) a window blind cord (b) a road up a hill (c) a truck loading ramp (d) a wheelchair ramp
14. 14.🏋️ Work is done when a force moves something … (a) very slowly (b) only upwards (c) through a distance (d) without moving it
15. 15.True or false: a civil engineer plans a dam. (a) True (b) False
16. 16.♻️ Is diesel a renewable or a non-renewable energy source? (a) non-renewable (b) renewable
17. 17.🔢 To follow the engineering design process, which comes first: “Improve” or “Ask”? (a) Ask (b) Improve
18. 18.Which of these is in tension (pulled)? (a) a tow rope on a car (b) a table leg (c) a pillar under a roof (d) a squeezed spring
19. 19.True or false: to agree before changing is poor teamwork. (a) False (b) True
20. 20.🧪 A paper bridge was tested three times. It held 370 g, 230 g and 270 g. What is the mean (average) load it held, in grams?
21. 21.True or false: a hair band needs a transparent material. (a) False (b) True
22. 22.True or false: to guess, do not measure is good testing. (a) True (b) False
23. 23.Which of these is made by engineers? (a) a rainbow (b) a banyan tree (c) a waterfall (d) a mobile phone
24. 24.🧑‍🔧 Which kind of engineer designs factory machines? (a) chemical (b) biomedical (c) aerospace (d) mechanical
25. 25.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
26. 26.🪝 Fixed or movable pulley: which one stays in one place? (a) a movable pulley (b) a fixed pulley
27. 27.🔢 To follow the engineering design process, which is the FIRST step? (a) Test (b) Create (c) Improve (d) Ask
28. 28.♻️ Reduce, reuse or recycle: fix a dripping tap? (a) recycle (b) reuse (c) reduce
29. 29.🏚️ Why are flexible joints good in an earthquake? (a) they are cheap (b) they look nice (c) they stop shaking (d) they bend, not break
30. 30.♻️ Reduce, reuse or recycle: use a jar as a pen stand? (a) reduce (b) reuse (c) recycle
31. 31.🔍 Which is the odd one out? (a) record every result (b) hide a failed test (c) change only one thing (d) repeat each test
32. 32.🧱 Which property matters most for a cooking pot handle? (a) transparent (b) waterproof (c) flexible (d) heat insulator
33. 33.⚖️ On a seesaw, a heavier child should sit … (a) farther from the pivot (b) closer to the pivot (c) anywhere (d) on the pivot
34. 34.⚖️ A lever balances when … (a) the bar is short (b) the fulcrum moves (c) both weights are equal (d) turning effects match
35. 35.⚖️ Which class of lever is a beam balance? (a) class 1 (b) class 3 (c) class 2
36. 36.Which of these is reduce (use less)? (a) turn plastic into tiles (b) fix a dripping tap (c) melt glass into new jars (d) give old books away
37. 37.True or false: “fit on a school desk” is a criterion (a goal). (a) True (b) False
38. 38.💪 In which unit do we measure force? (a) second (s) (b) newton (N) (c) metre (m) (d) litre (L)
39. 39.🌉 A beam bridge 160 m long is split by piers into 4 equal spans. How long is each span, in metres?
40. 40.🧱 Which property matters most for an umbrella cover? (a) heat insulator (b) waterproof (c) electrical conductor (d) transparent

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