Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 325 · 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 2 m. A wall is 4 cm long on the plan. How long is the real wall, in metres?
2. 2.⚖️ A lever balances when … (a) the bar is short (b) both weights are equal (c) turning effects match (d) the fulcrum moves
3. 3.True or false: to measure the same way is good testing. (a) False (b) True
4. 4.Which of these makes a building safer in earthquakes? (a) stacking loose bricks (b) fitting rubber base pads (c) raising heavy tanks high (d) using a heavy roof
5. 5.Which of these is an inclined plane? (a) a window blind cord (b) a round doorknob (c) a road up a hill (d) a bottle cap
6. 6.🪢 Which material is good in tension but useless in compression? (a) a stone (b) a brick (c) a concrete block (d) a rope
7. 7.Which job does a mechanical engineer do? (a) designs car engines (b) plans a power grid (c) builds hospital scanners (d) designs hearing aids
8. 8.⚙️ A screw is really … (a) a tiny pulley (b) a kind of wheel (c) a ramp wrapped round (d) a bent lever
9. 9.🔍 Which is the odd one out? (a) a flagpole rope wheel (b) a well-bucket rope wheel (c) a crane hook block (d) a wood screw
10. 10.True or false: to smooth a rough edge, use sandpaper. (a) False (b) True
11. 11.💪 A box weighs 230 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
12. 12.True or false: “a rope bridge in hills” is an arch bridge. (a) True (b) False
13. 13.🛞 How can we reduce friction in a machine? (a) oil the moving parts (b) press parts harder (c) add sand (d) make parts rough
14. 14.🏚️ Does adding steel to concrete make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
15. 15.⚖️ A lever bar balances. The load is ? N at 20 cm from the fulcrum. The effort is 140 N at 30 cm from the fulcrum on the other side. What is the missing force in newtons?
16. 16.🌉 A beam bridge is 180 m long. Piers split it into equal spans of 45 m. How many spans are there?
17. 17.⚙️ Which simple machine is a round doorknob? (a) inclined plane (b) wheel and axle (c) pulley (d) lever
18. 18.📋 Criterion: the model bridge must hold at least 600 g. In the test it held 650 g. Does it meet the criterion? (a) No (b) Yes
19. 19.True or false: a broom when sweeping is a class 1 lever (fulcrum in the middle). (a) False (b) True
20. 20.True or false: a wet tiled floor gives less friction. (a) True (b) False
21. 21.🧑‍🔧 Which kind of engineer writes app software? (a) biomedical (b) aerospace (c) mechanical (d) computer
22. 22.📋 A design meets every criterion but costs more than the budget. Is it acceptable? (a) only if it is red (b) yes, always (c) yes, it works (d) no, it breaks a limit
23. 23.🛞 More or less friction: skating on ice? (a) less friction (b) more friction
24. 24.🔢 To follow the engineering design process, which comes first: “Plan” or “Ask”? (a) Plan (b) Ask
25. 25.🏋️ A force of 450 N did 450 J of work. How many metres did the object move?
26. 26.🛞 Is friction helpful or a problem here: walking without slipping? (a) helpful (b) a problem
27. 27.True or false: “spend at most ₹100” is a criterion (a goal). (a) True (b) False
28. 28.📋 For a model bridge challenge, is “roll at least 2 metres” a constraint or a criterion? (a) a constraint (b) a criterion
29. 29.Which of these is an arch bridge? (a) a flat deck on piers (b) pushes out on its ends (c) a rope bridge in hills (d) the longest spans of all
30. 30.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
31. 31.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: ice 1 N, a wooden plank 3 N, a carpet 4 N, sandpaper 8 N. Which surface gave the most friction? (a) ice (b) a carpet (c) a wooden plank (d) sandpaper
32. 32.🏚️ Does making brittle joints make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
33. 33.⚖️ What is the pivot point of a lever called? (a) the effort (b) the axle (c) the load (d) the fulcrum
34. 34.True or false: to brainstorm many ideas is the Ask step. (a) True (b) False
35. 35.🔍 Which is the odd one out? (a) a volcano (b) a cloud (c) a water filter (d) a coral reef
36. 36.True or false: to dream up possible fixes is the Imagine step. (a) False (b) True
37. 37.True or false: to cut away from your body is safe. (a) False (b) True
38. 38.🏋️ A 15 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
39. 39.🛞 Rubbing your hands fast makes them … (a) cold (b) warm (c) magnetic (d) wet
40. 40.🔢 To follow the engineering design process, which is the FIRST step? (a) Ask (b) Create (c) Plan (d) Test

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