Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 79 · 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.True or false: a bridge helps people keep food fresh longer. (a) True (b) False
2. 2.⚖️ A seesaw balances. Ravi (? N) sits 1 m from the pivot on one side; Kabir (200 N) sits 3 m from the pivot on the other side. What is the missing weight in newtons?
3. 3.🔍 Which is the odd one out? (a) leave tools on the floor (b) touch a hot glue tip (c) carry scissors closed (d) play near a moving drill
4. 4.⚖️ Along a straight bar, measured from the left end, the effort is at 20 cm, the fulcrum at 50 cm and the load at 60 cm. Which class of lever is it? (a) class 2 (b) class 3 (c) class 1
5. 5.🧑‍🔧 Which branch of engineering uses engineering to help doctors? (a) aerospace (b) biomedical (c) electrical (d) civil
6. 6.🏋️ A longer ramp to the same height needs … (a) more effort (b) no effort (c) the same effort (d) less effort
7. 7.True or false: to smooth a rough edge, use a tape measure. (a) True (b) False
8. 8.📋 Criterion: the model bridge must hold at least 300 g. In the test it held 350 g. Does it meet the criterion? (a) Yes (b) No
9. 9.⚖️ Along a straight bar, measured from the left end, the effort is at 20 cm, the fulcrum at 60 cm and the load at 80 cm. Which class of lever is it? (a) class 2 (b) class 1 (c) class 3
10. 10.🧑‍🔧 Which branch of engineering designs buildings, roads and bridges? (a) civil (b) biomedical (c) computer (d) chemical
11. 11.True or false: a movable pulley rises with the load. (a) False (b) True
12. 12.Which of these is in compression (pushed)? (a) a suspension cable (b) a swing chain (c) a pillar under a roof (d) a tent guy rope
13. 13.🌉 A beam bridge 80 m long is split by piers into 8 equal spans. How long is each span, in metres?
14. 14.🛠️ People need to carry many people far. Which invention helps? (a) a dam (b) a water filter (c) a train (d) a lift
15. 15.True or false: drawing up a well bucket is a pull. (a) True (b) False
16. 16.⚖️ A seesaw balances. Asha (200 N) sits 4 m from the pivot on one side; Zoya (? N) sits 1 m from the pivot on the other side. What is the missing weight in newtons?
17. 17.🏚️ What do engineers use to test models of buildings for earthquakes? (a) a shake table (b) a telescope (c) a microscope (d) a fridge
18. 18.⚖️ A seesaw balances. Arjun (400 N) sits 3 m from the pivot on one side; Ravi (300 N) sits ? m from the pivot on the other side. What is the missing distance in metres?
19. 19.True or false: “the longest spans of all” is a beam bridge. (a) False (b) True
20. 20.🛞 Is friction helpful or a problem here: a door hinge squeaking? (a) a problem (b) helpful
21. 21.📐 On a plan, 1 cm stands for 10 m. A wall is 17 cm long on the plan. How long is the real wall, in metres?
22. 22.🔄 Which design-process step is it to build the model? (a) Plan (b) Create (c) Imagine (d) Test
23. 23.🧑‍🔧 Which branch of engineering designs machines with moving parts? (a) biomedical (b) chemical (c) civil (d) mechanical
24. 24.⚖️ A seesaw balances. Ravi (190 N) sits 4 m from the pivot on one side; Zoya (? N) sits 1 m from the pivot on the other side. What is the missing weight in newtons?
25. 25.⚙️ Which simple machine is a water tap handle? (a) lever (b) pulley (c) wheel and axle (d) wedge
26. 26.🪢 Tension or compression: a table leg? (a) tension (b) compression
27. 27.True or false: a tunnel helps people go through a mountain. (a) False (b) True
28. 28.📋 For a model bridge challenge, is “be under 30 cm tall” a constraint or a criterion? (a) a criterion (b) a constraint
29. 29.📋 A design meets every criterion but costs more than the budget. Is it acceptable? (a) yes, always (b) no, it breaks a limit (c) only if it is red (d) yes, it works
30. 30.True or false: a claw hammer on a nail is a wedge. (a) True (b) False
31. 31.Which of these is reduce (use less)? (a) reuse gift paper (b) use a jar as a pen stand (c) buy less packaging (d) pulp old paper
32. 32.True or false: a fixed pulley hangs on the rope loop. (a) False (b) True
33. 33.Which of these uses triangles? (a) an old stone bridge (b) a plank over a drain (c) a round palace roof (d) a roof truss
34. 34.🏋️ In which unit is work measured? (a) metre (m) (b) newton (N) (c) watt hour (d) joule (J)
35. 35.True or false: to use the same load is poor testing. (a) True (b) False
36. 36.🔍 Which is the odd one out? (a) stand in a fan breeze (b) keep ice for 1 hour (c) float for 1 minute (d) be under 30 cm tall
37. 37.🦺 How should you carry scissors? (a) points down, closed (b) while running (c) by the blades (d) points up, open
38. 38.🔢 To follow the engineering design process, which comes first: “Improve” or “Imagine”? (a) Imagine (b) Improve
39. 39.🔍 Which is the odd one out? (a) a crane lifting cable (b) a tall bridge tower (c) a brick at a wall base (d) a bridge pier
40. 40.💪 Two children push a box to the right, one with 80 N and the other with 25 N. What is the net (total) force on the box, in newtons?

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