Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 855 · 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.🧑‍🔧 Which kind of engineer plans a space mission? (a) biomedical (b) electrical (c) aerospace (d) mechanical
2. 2.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) use the same load (d) guess, do not measure
3. 3.🤝 A team of 2 shares 4 equal jobs fairly. Each job takes 5 minutes. How many minutes does each person work?
4. 4.📐 How many centimetres are in 1 metre? (a) 60 (b) 1000 (c) 10 (d) 100
5. 5.🏚️ What do engineers use to test models of buildings for earthquakes? (a) a shake table (b) a telescope (c) a fridge (d) a microscope
6. 6.💪 In a tug of war, one team pulls right with 50 N and the other pulls left with 10 N. What is the size of the net force, in newtons?
7. 7.🔍 Which is the odd one out? (a) finish in 40 minutes (b) use at most 20 straws (c) be under 30 cm tall (d) roll at least 2 metres
8. 8.🏚️ Does adding cross bracing make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
9. 9.True or false: a mechanical engineer designs school networks. (a) False (b) True
10. 10.Which of these uses an arch? (a) a crane arm (b) a lintel over a door (c) a curved stone doorway (d) an electric pylon
11. 11.True or false: a wheelbarrow is a class 1 lever (fulcrum in the middle). (a) False (b) True
12. 12.⚙️ Which simple machine is a round doorknob? (a) wheel and axle (b) inclined plane (c) screw (d) lever
13. 13.⚖️ Along a straight bar, measured from the left end, the effort is at 20 cm, the fulcrum at 0 cm and the load at 40 cm. Which class of lever is it? (a) class 1 (b) class 3 (c) class 2
14. 14.⚖️ A lever bar balances. The load is 90 N at 50 cm from the fulcrum. The effort is ? N at 90 cm from the fulcrum on the other side. What is the missing force in newtons?
15. 15.🏋️ A 3 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
16. 16.⚖️ Along a straight bar, measured from the left end, the effort is at 30 cm, the fulcrum at 0 cm and the load at 70 cm. Which class of lever is it? (a) class 3 (b) class 1 (c) class 2
17. 17.♻️ Is ocean wave energy a renewable or a non-renewable energy source? (a) renewable (b) non-renewable
18. 18.True or false: a movable pulley only changes direction. (a) False (b) True
19. 19.🔺 Which shape keeps its shape best when its corners are pinned? (a) hexagon (b) triangle (c) square (d) rectangle
20. 20.⚖️ Which class of lever is a crowbar? (a) class 1 (b) class 2 (c) class 3
21. 21.🔺 One side of a straw bridge is a row of 15 triangles standing point-up and point-down in turn, each sharing a side with the next. How many straws does it use?
22. 22.⚖️ A seesaw balances. Asha (200 N) sits ? m from the pivot on one side; Ravi (200 N) sits 2 m from the pivot on the other side. What is the missing distance in metres?
23. 23.🏋️ A force of 50 N did 100 J of work. How many metres did the object move?
24. 24.Which need does a dam meet? (a) keep food fresh longer (b) make water safe to drink (c) store water for summer (d) carry many people far
25. 25.True or false: to drive in a nail, use pliers. (a) False (b) True
26. 26.🔄 Is the engineering design process done only once? (a) yes, only once (b) only on Sundays (c) no, it repeats (d) only for big jobs
27. 27.💪 Two children push a box to the right, one with 45 N and the other with 5 N. What is the net (total) force on the box, in newtons?
28. 28.📋 Your team’s budget is ₹34. You must buy one roll of tape for ₹10. Straws cost ₹1 each. What is the greatest number of straws you can buy?
29. 29.🔢 To follow the engineering design process, which comes first: “Create” or “Ask”? (a) Create (b) Ask
30. 30.📋 For a model bridge challenge, is “finish in 40 minutes” a constraint or a criterion? (a) a constraint (b) a criterion
31. 31.Which of these is a suspension bridge? (a) a flat deck on piers (b) a curve under the deck (c) a rope bridge in hills (d) pushes out on its ends
32. 32.True or false: an aerospace engineer plans a space mission. (a) False (b) True
33. 33.🏋️ In which unit is work measured? (a) joule (J) (b) watt hour (c) metre (m) (d) newton (N)
34. 34.🦺 In the workshop, is it safe to cut towards your hand? (a) safe (b) not safe
35. 35.True or false: a movable pulley stays in one place. (a) False (b) True
36. 36.🔍 Which is the odd one out? (a) a stretched rubber band (b) a suspension cable (c) a brick at a wall base (d) a tug of war rope
37. 37.🏋️ A 13 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
38. 38.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a carpet 5 N, ice 1 N, a glass sheet 2 N, a wooden plank 3 N. Which surface gave the least friction? (a) a glass sheet (b) a wooden plank (c) ice (d) a carpet
39. 39.🦺 In the workshop, is it safe to clamp wood before sawing? (a) not safe (b) safe
40. 40.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a wooden plank 4 N, a carpet 7 N, sandpaper 8 N, a glass sheet 2 N. How many newtons more were needed on sandpaper than on a glass sheet?

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