Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 883 · 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.📐 On a plan, 1 cm stands for 10 m. A wall is 17 cm long on the plan. How long is the real wall, in metres?
2. 2.⚖️ To lift a heavy rock with a crowbar more easily, push … (a) on the fulcrum (b) on the rock (c) near the fulcrum (d) far from the fulcrum
3. 3.⚖️ Along a straight bar, measured from the left end, the effort is at 30 cm, the fulcrum at 40 cm and the load at 70 cm. Which class of lever is it? (a) class 3 (b) class 1 (c) class 2
4. 4.🔺 Which shape keeps its shape best when its corners are pinned? (a) rectangle (b) triangle (c) square (d) hexagon
5. 5.True or false: “hold up 500 g” is a criterion (a goal). (a) False (b) True
6. 6.⚖️ A lever balances when … (a) turning effects match (b) the fulcrum moves (c) the bar is short (d) both weights are equal
7. 7.Which job does an electrical engineer do? (a) designs power lines (b) designs a gearbox (c) builds hospital scanners (d) designs a paint factory
8. 8.True or false: a dam helps people store water for summer. (a) False (b) True
9. 9.Which of these is in tension (pulled)? (a) a brick at a wall base (b) a tall bridge tower (c) a suspension cable (d) a squeezed spring
10. 10.🔺 A frame shaped like a triangle is made of straws joined by loose pins, with 0 corner-to-corner braces. Is it rigid or wobbly? (a) wobbly (b) rigid
11. 11.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
12. 12.🛞 Is friction helpful or a problem here: tyres wearing down? (a) helpful (b) a problem
13. 13.🛠️ Engineers use maths and which other subject the most? (a) music (b) dance (c) science (d) cooking
14. 14.🤝 Is it good or poor teamwork to give kind feedback? (a) poor teamwork (b) good teamwork
15. 15.True or false: powder on a carrom board gives less friction. (a) False (b) True
16. 16.Which of these is in tension (pulled)? (a) a tent guy rope (b) a tall bridge tower (c) a squeezed spring (d) a pillar under a roof
17. 17.🏋️ A machine lifts a load of 180 N when you push with 90 N. What is its mechanical advantage (MA)?
18. 18.🪢 Tension or compression: a tent guy rope? (a) tension (b) compression
19. 19.True or false: to record every result is good testing. (a) False (b) True
20. 20.📐 On a plan, 1 cm stands for 2 m. A real bridge is 26 m long. How long is it on the plan, in centimetres?
21. 21.Which job does a mechanical engineer do? (a) designs a gearbox (b) designs a paint factory (c) designs artificial limbs (d) designs hearing aids
22. 22.🪝 A winch has a wheel of radius 20 cm and an axle of radius 4 cm. What effort on the wheel lifts a 300 N bucket on the axle, in newtons? (ideal)
23. 23.⚖️ In a class 2 lever, what is in the middle? (a) the axle (b) the effort (c) the load (d) the fulcrum
24. 24.📐 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?
25. 25.📐 Why do engineers use scale drawings? (a) to save ink only (b) to make them pretty (c) big things fit on paper (d) to hide sizes
26. 26.🔢 To follow the engineering design process, which is the FIRST step? (a) Plan (b) Ask (c) Test (d) Create
27. 27.🧑‍🔧 Which kind of engineer designs a gearbox? (a) civil (b) biomedical (c) mechanical (d) electrical
28. 28.🛠️ What does an engineer do before building anything? (a) buys every material (b) builds at once (c) paints the model (d) understands the problem
29. 29.🔍 Which is the odd one out? (a) powder on a carrom board (b) a box pushed on carpet (c) a smooth steel slide (d) a wet tiled floor
30. 30.⚙️ Which simple machine is a water tap handle? (a) wedge (b) lever (c) pulley (d) wheel and axle
31. 31.🛠️ People need to keep food fresh longer. Which invention helps? (a) a dam (b) a water filter (c) a fridge (d) a lift
32. 32.True or false: a tyre with deep treads gives less friction. (a) True (b) False
33. 33.📋 Criterion: the model bridge must hold at least 500 g. In the test it held 500 g. Does it meet the criterion? (a) No (b) Yes
34. 34.True or false: a tug of war rope is in tension (pulled). (a) True (b) False
35. 35.⚖️ In a class 1 lever, what is in the middle? (a) nothing (b) the fulcrum (c) the load (d) the effort
36. 36.True or false: to list the materials is the Create step. (a) False (b) True
37. 37.📋 Your team’s budget is ₹130. You must buy one roll of tape for ₹15. Straws cost ₹4 each. What is the greatest number of straws you can buy?
38. 38.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a glass sheet 8 N, a carpet 9 N, sandpaper 10 N, ice 4 N. Which surface gave the least friction? (a) sandpaper (b) a carpet (c) ice (d) a glass sheet
39. 39.🤝 Why do engineers work in teams? (a) to argue more (b) to work alone (c) many skills and ideas (d) to finish nothing
40. 40.🪢 Compression is a force that … (a) makes light (b) cools things (c) pulls or stretches (d) pushes or squeezes

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