Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 922 · 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 machine lifts a load of 60 N when you push with 30 N. What is its mechanical advantage (MA)?
2. 2.🧑‍🔧 Which kind of engineer designs a gearbox? (a) mechanical (b) biomedical (c) electrical (d) aerospace
3. 3.Which of these is reuse (use again)? (a) use a jar as a pen stand (b) turn plastic into tiles (c) pulp old paper (d) switch off unused lights
4. 4.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
5. 5.True or false: a mechanical engineer designs a gearbox. (a) False (b) True
6. 6.⚖️ A lever bar balances. The load is ? N at 10 cm from the fulcrum. The effort is 30 N at 70 cm from the fulcrum on the other side. What is the missing force in newtons?
7. 7.True or false: “a log across a stream” is a suspension bridge. (a) True (b) False
8. 8.Which of these is a suspension bridge? (a) the longest spans of all (b) the simplest bridge (c) a log across a stream (d) a flat deck on piers
9. 9.🔍 Which is the odd one out? (a) a screw jack (b) a jar lid (c) a nut and bolt (d) a claw hammer on a nail
10. 10.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
11. 11.📋 Criterion: the model bridge must hold at least 600 g. In the test it held 450 g. Does it meet the criterion? (a) Yes (b) No
12. 12.Which of these is a beam bridge? (a) the longest spans of all (b) tall towers hold cables (c) the simplest bridge (d) a curve under the deck
13. 13.True or false: a roof sheet needs a waterproof material. (a) True (b) False
14. 14.⚖️ Turning effect = force × … (a) distance from fulcrum (b) time taken (c) colour of bar (d) mass of fulcrum
15. 15.💪 Which force is at work: a rolling ball slows? (a) magnetic force (b) muscular force (c) friction (d) gravity
16. 16.📋 For a model bridge challenge, is “spend at most ₹100” a constraint or a criterion? (a) a criterion (b) a constraint
17. 17.True or false: building tall and narrow makes a building less safe in earthquakes. (a) False (b) True
18. 18.🔢 To follow the engineering design process, which comes first: “Create” or “Test”? (a) Test (b) Create
19. 19.📐 On a plan, 1 cm stands for 20 m. A real bridge is 120 m long. How long is it on the plan, in centimetres?
20. 20.True or false: to give kind feedback is good teamwork. (a) False (b) True
21. 21.🏚️ Does using a heavy roof make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
22. 22.Which of these is in tension (pulled)? (a) a stone in an arch (b) a pillar under a roof (c) a tall bridge tower (d) a tug of war rope
23. 23.True or false: diesel is a renewable energy source. (a) True (b) False
24. 24.True or false: a tent guy rope is in compression (pushed). (a) False (b) True
25. 25.⚙️ How many simple machines are there in the usual list? (a) 6 (b) 3 (c) 10 (d) 12
26. 26.True or false: a suspension cable is in compression (pushed). (a) False (b) True
27. 27.♻️ Is coal a renewable or a non-renewable energy source? (a) renewable (b) non-renewable
28. 28.True or false: a stone in an arch is in compression (pushed). (a) True (b) False
29. 29.🦺 Who should use hot glue guns and power tools in a kids’ project? (a) a stranger (b) any child alone (c) the youngest child (d) an adult
30. 30.Which job is a protractor for? (a) measure a long length (b) measure an angle (c) check a shelf is level (d) turn a screw
31. 31.🏚️ Three solid model towers are made of the same material. Tower A is 50 cm tall on a 10 cm wide base, tower B is 20 cm tall on a 20 cm base and tower C is 120 cm tall on a 40 cm base. Which is the easiest to tip over? (a) tower B (b) tower C (c) tower A
32. 32.🪝 Fixed or movable pulley: which one makes you pull 2× rope? (a) a movable pulley (b) a fixed pulley
33. 33.💪 A cart is pulled to the right with 90 N and to the left with 95 N. Which way does the net force act? (a) to the left (b) no net force (c) to the right
34. 34.🔍 Which is the odd one out? (a) a bicycle (b) a bridge (c) a river (d) a satellite
35. 35.🛞 Is friction helpful or a problem here: writing with a pencil? (a) a problem (b) helpful
36. 36.Which job is a hammer for? (a) check a shelf is level (b) cut a wooden plank (c) grip and bend wire (d) drive in a nail
37. 37.🪢 Tension or compression: a brick at a wall base? (a) tension (b) compression
38. 38.⚖️ A lever bar balances. The load is 60 N at 30 cm from the fulcrum. The effort is ? N at 20 cm from the fulcrum on the other side. What is the missing force in newtons?
39. 39.Which of these happens in the Imagine step? (a) make a prototype (b) think of wild ideas (c) redesign after testing (d) try it out
40. 40.True or false: to check a shelf is level, use a spirit level. (a) False (b) True

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