Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 911 · 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 bag has a mass of 41 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
2. 2.True or false: to use a cracked tool is not safe. (a) False (b) True
3. 3.💪 Which force pulls everything towards the Earth? (a) wind (b) friction (c) gravity (d) magnetism
4. 4.⚖️ A seesaw balances. Asha (150 N) sits ? m from the pivot on one side; Meena (600 N) sits 1 m from the pivot on the other side. What is the missing distance in metres?
5. 5.🪝 Fixed or movable pulley: which one needs effort = load? (a) a fixed pulley (b) a movable pulley
6. 6.Which of these is an arch bridge? (a) a flat deck on piers (b) deck hangs from cables (c) a log across a stream (d) pushes out on its ends
7. 7.🏋️ A 20 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
8. 8.🪝 Fixed or movable pulley: which one hangs on the rope loop? (a) a movable pulley (b) a fixed pulley
9. 9.True or false: “a curve under the deck” is a suspension bridge. (a) True (b) False
10. 10.📐 How many centimetres are in 1 metre? (a) 60 (b) 100 (c) 10 (d) 1000
11. 11.🛞 Is friction helpful or a problem here: tyres wearing down? (a) helpful (b) a problem
12. 12.🧱 Which material is best for a cooking pot handle? (a) iron (b) copper (c) wood or plastic (d) aluminium
13. 13.⚖️ A lever bar balances. The load is 80 N at ? cm from the fulcrum. The effort is 40 N at 20 cm from the fulcrum on the other side. What is the missing distance in centimetres?
14. 14.True or false: “the simplest bridge” is a suspension bridge. (a) True (b) False
15. 15.📐 On a plan, 1 cm stands for 2 m. A real bridge is 40 m long. How long is it on the plan, in centimetres?
16. 16.🏋️ Pushing a crate 9 m took 270 J of work. What force was used, in newtons?
17. 17.Which of these happens in the Create step? (a) define the problem (b) fix the weak part (c) measure its performance (d) make a prototype
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 300 g and design C held 350 g. Which design was the weakest? (a) design C (b) design A (c) design B
19. 19.True or false: pulling a cart is a push. (a) True (b) False
20. 20.Which job does a chemical engineer do? (a) refines crude oil (b) builds hospital scanners (c) designs aeroplane wings (d) keeps data safe online
21. 21.True or false: hitting a cricket ball is a push. (a) False (b) True
22. 22.🏋️ A machine lifts a load of 360 N when you push with 60 N. What is its mechanical advantage (MA)?
23. 23.⚖️ Along a straight bar, measured from the left end, the effort is at 20 cm, the fulcrum at 100 cm and the load at 60 cm. Which class of lever is it? (a) class 3 (b) class 2 (c) class 1
24. 24.🪝 A pulley system lifts a 200 N load with an effort of 100 N. What is its mechanical advantage (MA)?
25. 25.🌉 Which bridge type: “good for short gaps”? (a) beam bridge (b) suspension bridge (c) arch bridge
26. 26.Which of these needs an electrical conductor? (a) a window pane (b) a tea flask lining (c) a water tank (d) a plug pin
27. 27.⚖️ Along a straight bar, measured from the left end, the effort is at 10 cm, the fulcrum at 70 cm and the load at 30 cm. Which class of lever is it? (a) class 2 (b) class 1 (c) class 3
28. 28.🧱 Is cotton cloth an electrical conductor or an insulator? (a) a conductor (b) an insulator
29. 29.📐 On a plan, 1 cm stands for 5 m. A real bridge is 45 m long. How long is it on the plan, in centimetres?
30. 30.🛠️ Is a volcano made by engineers or found in nature? (a) made by engineers (b) found in nature
31. 31.True or false: “stand in a fan breeze” is a constraint (a limit). (a) True (b) False
32. 32.True or false: a computer engineer plans a space mission. (a) True (b) False
33. 33.True or false: a curved stone doorway uses an arch. (a) True (b) False
34. 34.🌉 Which bridge type: “tall towers hold cables”? (a) beam bridge (b) suspension bridge (c) arch bridge
35. 35.🔄 Which design-process step is it to draw a labelled diagram? (a) Improve (b) Plan (c) Create (d) Ask
36. 36.📐 On a plan, 1 cm stands for 2 m. A real bridge is 14 m long. How long is it on the plan, in centimetres?
37. 37.🏋️ Work is done when a force moves something … (a) without moving it (b) very slowly (c) through a distance (d) only upwards
38. 38.True or false: a nutcracker is a lever. (a) False (b) True
39. 39.💪 Which force is at work: rain falls to the ground? (a) magnetic force (b) friction (c) gravity (d) muscular force
40. 40.🧪 What is a prototype? (a) the final product (b) an early test model (c) a sales poster (d) a broken part

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