Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 483 · 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 lever bar balances. The load is 160 N at ? cm from the fulcrum. The effort is 320 N at 20 cm from the fulcrum on the other side. What is the missing distance in centimetres?
2. 2.True or false: a movable pulley is on a flagpole top. (a) True (b) False
3. 3.📋 Criterion: the model bridge must hold at least 1000 g. In the test it held 900 g. Does it meet the criterion? (a) Yes (b) No
4. 4.True or false: to think of wild ideas is the Improve step. (a) True (b) False
5. 5.🔺 A frame shaped like a square is made of straws joined by loose pins, with 0 corner-to-corner braces. Is it rigid or wobbly? (a) rigid (b) wobbly
6. 6.⚖️ A lever balances when … (a) both weights are equal (b) the fulcrum moves (c) turning effects match (d) the bar is short
7. 7.🔄 Which design-process step is it to find the limits? (a) Imagine (b) Test (c) Create (d) Ask
8. 8.🔍 Which is the odd one out? (a) a door stopper (b) an axe blade (c) a nut and bolt (d) the tip of a nail
9. 9.True or false: to cut a wooden plank, use a saw. (a) True (b) False
10. 10.📐 A beam is 470 cm long. How long is it in metres? =
11. 11.⚙️ Most simple machines make work easier by letting us … (a) make new energy (b) switch off gravity (c) stop all friction (d) use a smaller force
12. 12.True or false: to put tools back after use is not safe. (a) True (b) False
13. 13.🏋️ A force of 350 N did 1050 J of work. How many metres did the object move?
14. 14.🏋️ A machine lifts a load of 120 N when you push with 30 N. What is its mechanical advantage (MA)?
15. 15.⚖️ Along a straight bar, measured from the left end, the effort is at 60 cm, the fulcrum at 50 cm and the load at 30 cm. Which class of lever is it? (a) class 1 (b) class 3 (c) class 2
16. 16.🔺 A frame shaped like a pentagon is made of straws joined by loose pins, with 2 corner-to-corner braces. Is it rigid or wobbly? (a) rigid (b) wobbly
17. 17.True or false: “cables tied down at ends” is an arch bridge. (a) True (b) False
18. 18.🔺 Which shape keeps its shape best when its corners are pinned? (a) square (b) rectangle (c) triangle (d) hexagon
19. 19.Which of these is a suspension bridge? (a) pushes out on its ends (b) a flat deck on piers (c) a curve under the deck (d) deck hangs from cables
20. 20.🌉 A beam bridge 250 m long is split by piers into 10 equal spans. How long is each span, in metres?
21. 21.🔍 Which is the odd one out? (a) a river (b) a ceiling fan (c) a dam (d) a lift
22. 22.🏋️ A 19 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
23. 23.⚖️ A lever bar balances. The load is ? N at 40 cm from the fulcrum. The effort is 320 N at 50 cm from the fulcrum on the other side. What is the missing force in newtons?
24. 24.♻️ A sustainable design … (a) lasts one day (b) uses the most plastic (c) wastes water (d) protects the future
25. 25.True or false: to tie back long hair is safe. (a) False (b) True
26. 26.📐 How many metres are in 1 kilometre? (a) 10 (b) 100 (c) 10000 (d) 1000
27. 27.🔍 Which is the odd one out? (a) lift a cup of water (b) stand in a fan breeze (c) roll at least 2 metres (d) spend at most ₹100
28. 28.🤝 In a design team, who tracks what is used up? (a) materials manager (b) builder (c) tester (d) team leader
29. 29.🔢 To follow the engineering design process, which comes first: “Plan” or “Test”? (a) Plan (b) Test
30. 30.📋 Criteria are … (a) the team names (b) the tools you use (c) goals a design must meet (d) the limits on money
31. 31.🔧 Which tool would you use to tighten a nut? (a) a screwdriver (b) a saw (c) a protractor (d) a spanner
32. 32.📐 On a plan, 1 cm stands for 20 m. A real bridge is 220 m long. How long is it on the plan, in centimetres?
33. 33.🏋️ A machine lifts a load of 1140 N when you push with 190 N. What is its mechanical advantage (MA)?
34. 34.🔍 Which is the odd one out? (a) adding steel to concrete (b) stacking loose bricks (c) using flexible joints (d) using a light roof
35. 35.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
36. 36.True or false: a water tank needs a waterproof material. (a) True (b) False
37. 37.Which of these makes a building less safe in earthquakes? (a) adding cross bracing (b) using flexible joints (c) making brittle joints (d) keeping a simple shape
38. 38.⚖️ To lift a heavy rock with a crowbar more easily, push … (a) near the fulcrum (b) far from the fulcrum (c) on the rock (d) on the fulcrum
39. 39.🔍 Which is the odd one out? (a) a lift (b) a water filter (c) a rainbow (d) a satellite
40. 40.True or false: a tow rope on a car is in compression (pushed). (a) False (b) True

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