Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 388 · 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: “be under 30 cm tall” is a constraint (a limit). (a) True (b) False
2. 2.Which of these is a wheel and axle? (a) a nut and bolt (b) a crowbar (c) a bottle opener (d) a steering wheel
3. 3.⚖️ In a class 1 lever, what is in the middle? (a) the fulcrum (b) nothing (c) the effort (d) the load
4. 4.True or false: raising heavy tanks high makes a building safer in earthquakes. (a) False (b) True
5. 5.⚖️ A seesaw balances. Zoya (? N) sits 1 m from the pivot on one side; Arjun (150 N) sits 4 m from the pivot on the other side. What is the missing weight in newtons?
6. 6.📋 For a model bridge challenge, is “carry 10 coins” a constraint or a criterion? (a) a constraint (b) a criterion
7. 7.💪 A bag has a mass of 11 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
8. 8.⚖️ Along a straight bar, measured from the left end, the effort is at 20 cm, the fulcrum at 70 cm and the load at 60 cm. Which class of lever is it? (a) class 3 (b) class 1 (c) class 2
9. 9.True or false: a pillar under a roof is in compression (pushed). (a) True (b) False
10. 10.⚙️ A screw is really … (a) a bent lever (b) a kind of wheel (c) a ramp wrapped round (d) a tiny pulley
11. 11.Which of these happens in the Improve step? (a) fix the weak part (b) make a prototype (c) measure its performance (d) pick the build order
12. 12.🔍 Which is the odd one out? (a) a swing chain (b) a squeezed spring (c) a bridge pier (d) a pillar under a roof
13. 13.📐 On a plan, 1 cm stands for 2 m. A wall is 8 cm long on the plan. How long is the real wall, in metres?
14. 14.True or false: a crane lifting cable is in compression (pushed). (a) True (b) False
15. 15.⚖️ A seesaw balances. Arjun (570 N) sits ? m from the pivot on one side; Ravi (760 N) sits 3 m from the pivot on the other side. What is the missing distance in metres?
16. 16.True or false: to listen to every idea is good teamwork. (a) False (b) True
17. 17.⚖️ A seesaw balances. Zoya (520 N) sits ? m from the pivot on one side; Meena (520 N) sits 4 m from the pivot on the other side. What is the missing distance in metres?
18. 18.🏚️ Three solid model towers are made of the same material. Tower A is 80 cm tall on a 20 cm wide base, tower B is 80 cm tall on a 40 cm base and tower C is 200 cm tall on a 40 cm base. Which is the hardest to tip over? (a) tower B (b) tower A (c) tower C
19. 19.🔢 To follow the engineering design process, which is the FIRST step? (a) Test (b) Create (c) Ask (d) Imagine
20. 20.🔧 Which tool would you use to tighten a nut? (a) a saw (b) a hammer (c) a protractor (d) a spanner
21. 21.🪝 A winch has a wheel of radius 10 cm and an axle of radius 5 cm. What effort on the wheel lifts a 40 N bucket on the axle, in newtons? (ideal)
22. 22.📐 A model car is drawn so that 1 cm stands for 20 cm. The car is 9 cm long in the drawing. How long is the real car, in centimetres?
23. 23.True or false: “the longest spans of all” is a suspension bridge. (a) True (b) False
24. 24.🛠️ A scientist asks “why does it happen?”. An engineer mostly asks … (a) what is for lunch? (b) how can we build it? (c) why is the sky blue? (d) who won the match?
25. 25.🌉 Which bridge type can cross the widest gap in one span? (a) log bridge (b) beam bridge (c) suspension bridge (d) arch bridge
26. 26.⚖️ Along a straight bar, measured from the left end, the effort is at 50 cm, the fulcrum at 20 cm and the load at 90 cm. Which class of lever is it? (a) class 3 (b) class 2 (c) class 1
27. 27.Which of these is caused by muscular force? (a) a magnet picks up pins (b) lifting a school bag (c) a thrown ball comes down (d) rubbing hands warms them
28. 28.True or false: a biomedical engineer designs knee implants. (a) False (b) True
29. 29.True or false: an aerospace engineer designs knee implants. (a) True (b) False
30. 30.🤝 In a design team, who checks the goals are met? (a) tester (b) team leader (c) materials manager (d) recorder
31. 31.🛞 Is friction helpful or a problem here: shoe soles wearing out? (a) a problem (b) helpful
32. 32.🪝 A pulley system lifts a 150 N load with an effort of 50 N. What is its mechanical advantage (MA)?
33. 33.🔺 How do engineers stop a square frame from wobbling? (a) make it bigger (b) take off a side (c) paint it (d) add a diagonal brace
34. 34.⚖️ Which class of lever is a pair of tweezers? (a) class 1 (b) class 2 (c) class 3
35. 35.🔄 Which design-process step is it to try it out? (a) Ask (b) Test (c) Plan (d) Imagine
36. 36.True or false: a computer engineer builds a website. (a) False (b) True
37. 37.True or false: an aerospace engineer designs aeroplane wings. (a) True (b) False
38. 38.True or false: a planetarium roof uses a dome. (a) False (b) True
39. 39.True or false: to try it out is the Ask step. (a) True (b) False
40. 40.Which of these is a lever? (a) a nut and bolt (b) a window blind cord (c) a flagpole rope wheel (d) a seesaw

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