Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 198 · 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 of these is found in nature? (a) a bicycle (b) a mountain (c) a lift (d) a bridge
2. 2.True or false: adding steel to concrete makes a building safer in earthquakes. (a) False (b) True
3. 3.⚖️ A seesaw balances. Meena (? N) sits 4 m from the pivot on one side; Ravi (400 N) sits 3 m from the pivot on the other side. What is the missing weight in newtons?
4. 4.Which need does a water filter meet? (a) reach a top floor fast (b) keep food fresh longer (c) make water safe to drink (d) store water for summer
5. 5.📐 On a plan, 1 cm stands for 5 m. A wall is 19 cm long on the plan. How long is the real wall, in metres?
6. 6.Which job does a mechanical engineer do? (a) builds a website (b) plans a power grid (c) designs factory machines (d) designs electric motors
7. 7.⚖️ 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?
8. 8.🔧 Which tool would you use to drive in a nail? (a) a hammer (b) a screwdriver (c) a saw (d) a hand drill
9. 9.📋 For a model bridge challenge, is “use only paper and tape” a constraint or a criterion? (a) a constraint (b) a criterion
10. 10.📐 On a plan, 1 cm stands for 2 m. A wall is 10 cm long on the plan. How long is the real wall, in metres?
11. 11.🧑‍🔧 Which kind of engineer designs car engines? (a) mechanical (b) biomedical (c) civil (d) electrical
12. 12.Which of these is an arch bridge? (a) deck hangs from cables (b) good for short gaps (c) the longest spans of all (d) stones squeezed together
13. 13.🔺 Which strong shape does an old stone bridge use? (a) triangle (b) arch (c) dome (d) beam
14. 14.⚖️ A seesaw balances. Meena (570 N) sits 4 m from the pivot on one side; Asha (760 N) sits ? m from the pivot on the other side. What is the missing distance in metres?
15. 15.Which of these is reduce (use less)? (a) melt glass into new jars (b) fix a dripping tap (c) plant in old tyres (d) give old books away
16. 16.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a glass sheet 4 N, a wooden plank 8 N, sandpaper 9 N, ice 2 N. How many newtons more were needed on sandpaper than on ice?
17. 17.🪝 Fixed or movable pulley: which one only changes direction? (a) a movable pulley (b) a fixed pulley
18. 18.🔍 Which is the odd one out? (a) a mobile phone (b) a water filter (c) a dam (d) a rainbow
19. 19.📋 A constraint is … (a) a kind of glue (b) a limit you must keep to (c) a goal for success (d) a final test
20. 20.🌉 Which bridge type: “good for short gaps”? (a) suspension bridge (b) arch bridge (c) beam bridge
21. 21.🌉 A beam bridge is 315 m long. Piers split it into equal spans of 45 m. How many spans are there?
22. 22.⚖️ A lever bar balances. The load is ? N at 30 cm from the fulcrum. The effort is 150 N at 50 cm from the fulcrum on the other side. What is the missing force in newtons?
23. 23.🔺 Which strong shape does a shelf on two brackets use? (a) dome (b) beam (c) arch (d) triangle
24. 24.💪 Is hitting a cricket ball a push or a pull? (a) a push (b) a pull
25. 25.⚙️ Which simple machine is a knife edge? (a) pulley (b) lever (c) wheel and axle (d) wedge
26. 26.🔍 Which is the odd one out? (a) a tow rope on a car (b) a brick at a wall base (c) a temple column (d) a tall bridge tower
27. 27.🔺 A flat frame has 4 straight sides joined by loose pins at the corners. What is the least number of corner-to-corner braces needed to make it rigid?
28. 28.🔍 Which is the odd one out? (a) a suspension cable (b) a temple column (c) a tall bridge tower (d) a table leg
29. 29.📐 On a plan, 1 cm stands for 20 m. A real bridge is 380 m long. How long is it on the plan, in centimetres?
30. 30.🧱 Which property matters most for a cooking pot handle? (a) flexible (b) waterproof (c) transparent (d) heat insulator
31. 31.What does the tester do? (a) checks the goals are met (b) cuts and joins parts (c) puts the model together (d) keeps the team on track
32. 32.🌉 Which bridge type: “the simplest bridge”? (a) suspension bridge (b) beam bridge (c) arch bridge
33. 33.⚖️ A seesaw balances. Ravi (? N) sits 2 m from the pivot on one side; Meena (200 N) sits 4 m from the pivot on the other side. What is the missing weight in newtons?
34. 34.♻️ Which is the BEST order to think about waste? (a) reuse, recycle, reduce (b) recycle, reuse, reduce (c) reduce, reuse, recycle (d) burn, bury, forget
35. 35.🛞 Is friction helpful or a problem here: dragging a heavy box? (a) helpful (b) a problem
36. 36.🪝 A pulley system lifts a 500 N load with an effort of 250 N. What is its mechanical advantage (MA)?
37. 37.💪 Is pushing a swing a push or a pull? (a) a push (b) a pull
38. 38.True or false: a wet tiled floor gives less friction. (a) True (b) False
39. 39.Which of these is reduce (use less)? (a) melt cans into new cans (b) turn plastic into tiles (c) carry a cloth bag (d) give old books away
40. 40.🏋️ Mechanical advantage (MA) = … (a) load ÷ effort (b) load × effort (c) load + effort (d) effort ÷ load

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