Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 105 · 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 bridge type can cross the widest gap in one span? (a) beam bridge (b) suspension bridge (c) log bridge (d) arch bridge
2. 2.True or false: a mechanical engineer designs a flyover. (a) False (b) True
3. 3.🔍 Which is the odd one out? (a) using flexible joints (b) fitting rubber base pads (c) making brittle joints (d) using a light roof
4. 4.🤝 A team plans for 50 minutes, builds for 15 minutes and then tests for 5 minutes, one after another. How many minutes is that in all?
5. 5.⚖️ A seesaw balances. Zoya (480 N) sits ? m from the pivot on one side; Asha (160 N) sits 3 m from the pivot on the other side. What is the missing distance in metres?
6. 6.True or false: to change only one thing is poor testing. (a) True (b) False
7. 7.True or false: a movable pulley makes you pull 2× rope. (a) False (b) True
8. 8.🏋️ Pushing a crate 6 m took 780 J of work. What force was used, in newtons?
9. 9.True or false: a crowbar is a class 2 lever (load in the middle). (a) True (b) False
10. 10.📐 On a plan, 1 cm stands for 20 m. A real bridge is 180 m long. How long is it on the plan, in centimetres?
11. 11.🔢 To follow the engineering design process, what comes right after “Test”? (a) Improve (b) Ask (c) Plan (d) Create
12. 12.⚖️ A lever balances when … (a) the bar is short (b) turning effects match (c) the fulcrum moves (d) both weights are equal
13. 13.♻️ A family used to throw away 10 plastic bags a week. They now carry cloth bags. How many plastic bags do they save in 6 weeks?
14. 14.🦺 In the workshop, is it safe to wear safety goggles? (a) not safe (b) safe
15. 15.Which of these is in compression (pushed)? (a) a stretched rubber band (b) a hanging lamp chain (c) a tug of war rope (d) a temple column
16. 16.🦺 What protects your eyes when sawing or drilling? (a) safety goggles (b) a cap (c) sunglasses (d) nothing
17. 17.🪢 A concrete slab weighing 1200 N rests evenly on 3 identical pillars. What compression force does each pillar carry, in newtons?
18. 18.🤝 A teammate’s idea seems odd. What should you do first? (a) ignore it (b) listen and ask why (c) walk away (d) laugh at it
19. 19.True or false: a beam balance is a class 1 lever (fulcrum in the middle). (a) True (b) False
20. 20.Which of these is caused by friction? (a) a magnet picks up pins (b) a river flows downhill (c) pedalling a cycle (d) a rolling ball slows
21. 21.📋 For a model bridge challenge, is “keep ice for 1 hour” a constraint or a criterion? (a) a criterion (b) a constraint
22. 22.🏚️ What do engineers use to test models of buildings for earthquakes? (a) a telescope (b) a microscope (c) a fridge (d) a shake table
23. 23.⚖️ A seesaw balances. Meena (360 N) sits 3 m from the pivot on one side; Kabir (? N) sits 3 m from the pivot on the other side. What is the missing weight in newtons?
24. 24.⚖️ A lever bar balances. The load is 40 N at 20 cm from the fulcrum. The effort is 40 N at ? cm from the fulcrum on the other side. What is the missing distance in centimetres?
25. 25.🪢 A concrete slab weighing 5600 N rests evenly on 8 identical pillars. What compression force does each pillar carry, in newtons?
26. 26.Which of these is found in nature? (a) a ceiling fan (b) a cloud (c) a lift (d) a mobile phone
27. 27.🏋️ Mechanical advantage (MA) = … (a) effort ÷ load (b) load + effort (c) load × effort (d) load ÷ effort
28. 28.🧑‍🔧 Which kind of engineer designs power lines? (a) electrical (b) biomedical (c) computer (d) civil
29. 29.🧱 Which material is best for the core of an electric wire? (a) wood (b) rubber (c) glass (d) copper
30. 30.⚙️ How many simple machines are there in the usual list? (a) 3 (b) 12 (c) 6 (d) 10
31. 31.🔍 Which is the odd one out? (a) using a heavy roof (b) using a light roof (c) building tall and narrow (d) stacking loose bricks
32. 32.🔺 A flat frame has 12 straight sides joined by loose pins at the corners. What is the least number of corner-to-corner braces needed to make it rigid?
33. 33.What does the recorder do? (a) runs the tests (b) tracks what is used up (c) writes down results (d) shares out the jobs
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 380 g, design B held 280 g and design C held 330 g. Which design was the weakest? (a) design B (b) design C (c) design A
35. 35.⚖️ Turning effect = force × … (a) mass of fulcrum (b) time taken (c) distance from fulcrum (d) colour of bar
36. 36.Which of these needs a transparent material? (a) a hair band (b) a window pane (c) a plug pin (d) a skipping rope
37. 37.True or false: a spectacle lens needs a flexible material. (a) True (b) False
38. 38.True or false: to find the limits is the Ask step. (a) False (b) True
39. 39.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
40. 40.🏋️ A force of 40 N pushes a cart 1 m along the floor. How much work is done, in joules?

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