Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 387 · 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.True or false: “be under 30 cm tall” is a criterion (a goal). (a) True (b) False
2. 2.🏋️ A smooth ramp is 18 m long and rises 3 m. What effort pushes a 900 N box up it, in newtons? (ideal ramp, no friction)
3. 3.♻️ Is flowing river water a renewable or a non-renewable energy source? (a) renewable (b) non-renewable
4. 4.🔺 One side of a straw bridge is a row of 3 triangles standing point-up and point-down in turn, each sharing a side with the next. How many straws does it use?
5. 5.🪝 A bucket weighing 50 N is lifted with a single fixed pulley at the top of a well. What effort is needed, in newtons? (ideal pulley, no friction)
6. 6.📐 On a plan, 1 cm stands for 5 m. A real bridge is 30 m long. How long is it on the plan, in centimetres?
7. 7.True or false: a planetarium roof uses a dome. (a) False (b) True
8. 8.True or false: a tunnel helps people carry many people far. (a) True (b) False
9. 9.📋 Your team’s budget is ₹54. You must buy one roll of tape for ₹20. Straws cost ₹2 each. What is the greatest number of straws you can buy?
10. 10.Which of these happens in the Test step? (a) think of wild ideas (b) find the limits (c) ask who will use it (d) measure its performance
11. 11.True or false: keeping a simple shape makes a building less safe in earthquakes. (a) False (b) True
12. 12.⚖️ A seesaw balances. Arjun (130 N) sits 3 m from the pivot on one side; Asha (390 N) sits ? m from the pivot on the other side. What is the missing distance in metres?
13. 13.🛞 More or less friction: skating on ice? (a) more friction (b) less friction
14. 14.⚖️ A lever balances when … (a) the bar is short (b) both weights are equal (c) turning effects match (d) the fulcrum moves
15. 15.🏋️ A force of 60 N did 420 J of work. How many metres did the object move?
16. 16.🪝 More rope sections holding a load means … (a) less effort needed (b) no change (c) more effort needed (d) the load floats
17. 17.🔍 Which is the odd one out? (a) a rough doormat (b) powder on a carrom board (c) a wet tiled floor (d) a smooth steel slide
18. 18.📋 Criterion: the model bridge must hold at least 300 g. In the test it held 400 g. Does it meet the criterion? (a) No (b) Yes
19. 19.True or false: a shelf on two brackets uses triangles. (a) True (b) False
20. 20.📐 On a plan, 1 cm stands for 20 m. A real bridge is 260 m long. How long is it on the plan, in centimetres?
21. 21.True or false: to tighten a nut, use pliers. (a) True (b) False
22. 22.🔍 Which is the odd one out? (a) iron (b) steel (c) glass (d) copper
23. 23.🪝 A pulley system has 2 rope sections holding up the load. To lift the load by 6 m, how many metres of rope must you pull?
24. 24.True or false: to list the materials is the Plan step. (a) True (b) False
25. 25.🏚️ Why are flexible joints good in an earthquake? (a) they are cheap (b) they look nice (c) they bend, not break (d) they stop shaking
26. 26.🛞 More or less friction: a tyre with deep treads? (a) less friction (b) more friction
27. 27.⚖️ A seesaw balances. Arjun (? N) sits 3 m from the pivot on one side; Kabir (420 N) sits 1 m from the pivot on the other side. What is the missing weight in newtons?
28. 28.🪢 Compression is a force that … (a) pulls or stretches (b) makes light (c) cools things (d) pushes or squeezes
29. 29.🧪 What is a prototype? (a) a sales poster (b) an early test model (c) a broken part (d) the final product
30. 30.⚖️ A seesaw balances. Asha (150 N) sits 2 m from the pivot on one side; Ravi (? N) sits 1 m from the pivot on the other side. What is the missing weight in newtons?
31. 31.🛠️ Is a volcano made by engineers or found in nature? (a) made by engineers (b) found in nature
32. 32.Which of these needs a flexible material? (a) a plug pin (b) a car windscreen (c) a raincoat (d) a yoga mat
33. 33.📐 On a plan, 1 cm stands for 20 m. A wall is 15 cm long on the plan. How long is the real wall, in metres?
34. 34.🛞 More or less friction: sand on a slippery path? (a) less friction (b) more friction
35. 35.Which of these is a wedge? (a) a window blind cord (b) a jar lid (c) a chisel (d) a round doorknob
36. 36.📋 For a model bridge challenge, is “fit on a school desk” a constraint or a criterion? (a) a criterion (b) a constraint
37. 37.Which of these is in tension (pulled)? (a) a stretched rubber band (b) a temple column (c) a tall bridge tower (d) a stone in an arch
38. 38.♻️ Which is the BEST order to think about waste? (a) reuse, recycle, reduce (b) burn, bury, forget (c) recycle, reuse, reduce (d) reduce, reuse, recycle
39. 39.True or false: a pair of tweezers is a class 3 lever (effort in the middle). (a) False (b) True
40. 40.Which of these happens in the Ask step? (a) measure its performance (b) build the model (c) ask who will use it (d) check it against goals

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