Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 507 · 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.🏋️ Pushing a crate 6 m took 180 J of work. What force was used, in newtons?
2. 2.True or false: “use at most 20 straws” is a constraint (a limit). (a) False (b) True
3. 3.🏋️ Mechanical advantage (MA) = … (a) load + effort (b) load ÷ effort (c) load × effort (d) effort ÷ load
4. 4.♻️ A sustainable design … (a) lasts one day (b) uses the most plastic (c) protects the future (d) wastes water
5. 5.True or false: a grippy rubber sole gives less friction. (a) True (b) False
6. 6.🔍 Which is the odd one out? (a) plastic (b) graphite (c) aluminium (d) copper
7. 7.🪝 A wheel and axle is a big wheel fixed to … (a) a sharp wedge (b) a loose rope (c) a smaller rod (axle) (d) a flat ramp
8. 8.🪢 Tension or compression: a stone in an arch? (a) compression (b) tension
9. 9.🛞 Is friction helpful or a problem here: gripping a cricket bat? (a) a problem (b) helpful
10. 10.📐 A beam is 930 cm long. How long is it in metres? =
11. 11.Which job does a civil engineer do? (a) designs a flyover (b) designs factory machines (c) designs electric motors (d) designs artificial limbs
12. 12.🏋️ An 11 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
13. 13.🏚️ Why are flexible joints good in an earthquake? (a) they look nice (b) they stop shaking (c) they are cheap (d) they bend, not break
14. 14.🔢 To follow the engineering design process, which comes first: “Improve” or “Ask”? (a) Improve (b) Ask
15. 15.💪 In a tug of war, one team pulls left with 20 N and the other pulls right with 5 N. What is the size of the net force, in newtons?
16. 16.What does the tester do? (a) collects the supplies (b) shares out the jobs (c) checks the goals are met (d) puts the model together
17. 17.📋 For a model bridge challenge, is “lift a cup of water” a constraint or a criterion? (a) a criterion (b) a constraint
18. 18.🪢 A sign weighing 360 N hangs from 4 identical vertical ropes that share the load equally. What is the tension in each rope, in newtons?
19. 19.⚖️ On a seesaw, a heavier child should sit … (a) farther from the pivot (b) closer to the pivot (c) anywhere (d) on the pivot
20. 20.🪝 A bucket weighing 160 N is lifted with a single fixed pulley at the top of a well. What effort is needed, in newtons? (ideal pulley, no friction)
21. 21.🔍 Which is the odd one out? (a) glass (b) aluminium (c) graphite (d) steel
22. 22.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: ice 4 N, a glass sheet 7 N, a carpet 10 N, sandpaper 11 N. Which surface gave the most friction? (a) a glass sheet (b) ice (c) a carpet (d) sandpaper
23. 23.True or false: to hide a mistake is good teamwork. (a) False (b) True
24. 24.📐 On a plan, 1 cm stands for 20 m. A wall is 8 cm long on the plan. How long is the real wall, in metres?
25. 25.🏋️ Can a simple machine reduce the work done? (a) only on Mondays (b) yes, by half (c) no, work stays the same (d) yes, always
26. 26.🪝 A pulley system lifts a 390 N load with an effort of 130 N. What is its mechanical advantage (MA)?
27. 27.🧱 Which material is best for the bars inside concrete? (a) plastic (b) steel (c) rubber (d) glass
28. 28.💪 Is kicking a football a push or a pull? (a) a push (b) a pull
29. 29.🔍 Which is the odd one out? (a) brass (b) aluminium (c) graphite (d) rubber
30. 30.🧑‍🔧 Which branch of engineering works on aeroplanes and rockets? (a) computer (b) chemical (c) civil (d) aerospace
31. 31.📋 Your team’s budget is ₹38. You must buy one roll of tape for ₹10. Straws cost ₹2 each. What is the greatest number of straws you can buy?
32. 32.True or false: a mechanical engineer designs car engines. (a) False (b) True
33. 33.💪 Which force is at work: rubbing hands warms them? (a) friction (b) muscular force (c) gravity (d) magnetic force
34. 34.🌉 In a stone arch bridge, the stones are in … (a) tension (b) friction (c) no force (d) compression
35. 35.What does the recorder do? (a) checks the goals are met (b) writes down results (c) tracks what is used up (d) cuts and joins parts
36. 36.🧱 Which material is best for a window pane? (a) steel (b) wood (c) glass (d) brick
37. 37.⚙️ Most simple machines make work easier by letting us … (a) stop all friction (b) use a smaller force (c) switch off gravity (d) make new energy
38. 38.🏋️ A force of 490 N pushes a cart 9 m along the floor. How much work is done, in joules?
39. 39.True or false: an electrical engineer designs power lines. (a) True (b) False
40. 40.True or false: to pick the build order is the Plan step. (a) False (b) True

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