Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 155 · 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 can a force NOT do? (a) start it moving (b) change its shape (c) stop it moving (d) change its colour
2. 2.💪 Which force is at work: squeezing a lemon? (a) friction (b) muscular force (c) magnetic force (d) gravity
3. 3.🪢 Tension or compression: a temple column? (a) compression (b) tension
4. 4.⚖️ Along a straight bar, measured from the left end, the effort is at 110 cm, the fulcrum at 70 cm and the load at 30 cm. Which class of lever is it? (a) class 2 (b) class 3 (c) class 1
5. 5.True or false: a fixed pulley is on a flagpole top. (a) True (b) False
6. 6.True or false: a slab over a canal uses an arch. (a) True (b) False
7. 7.📐 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?
8. 8.🛞 Is friction helpful or a problem here: walking without slipping? (a) a problem (b) helpful
9. 9.🏚️ Does using a light roof make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
10. 10.🪝 A bucket weighing 110 N is lifted with a single fixed pulley at the top of a well. What effort is needed, in newtons? (ideal pulley, no friction)
11. 11.True or false: a wet tiled floor gives more friction. (a) True (b) False
12. 12.True or false: to tighten a nut, use a spanner. (a) True (b) False
13. 13.🏋️ An 11 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
14. 14.⚖️ A lever bar balances. The load is 300 N at 10 cm from the fulcrum. The effort is 100 N at ? cm from the fulcrum on the other side. What is the missing distance in centimetres?
15. 15.True or false: to try it out is the Test step. (a) False (b) True
16. 16.What does the team leader do? (a) tracks what is used up (b) checks the goals are met (c) puts the model together (d) keeps the team on track
17. 17.🤝 In a design team, who tracks what is used up? (a) team leader (b) materials manager (c) tester (d) builder
18. 18.True or false: a water filter is found in nature. (a) False (b) True
19. 19.Which of these is a suspension bridge? (a) a log across a stream (b) a curve under the deck (c) deck hangs from cables (d) a flat deck on piers
20. 20.🔄 What is the FIRST step of the engineering design process? (a) Test (b) Improve (c) Create (d) Ask
21. 21.True or false: a tyre with deep treads gives less friction. (a) True (b) False
22. 22.🔺 Why can an arch carry heavy loads? (a) it is very light (b) it works in compression (c) it is hollow (d) it bends easily
23. 23.📐 How many metres are in 1 kilometre? (a) 10 (b) 10000 (c) 1000 (d) 100
24. 24.⚖️ A seesaw balances. Meena (260 N) sits 1 m from the pivot on one side; Arjun (130 N) sits ? m from the pivot on the other side. What is the missing distance in metres?
25. 25.♻️ Reduce, reuse or recycle: pulp old paper? (a) reduce (b) reuse (c) recycle
26. 26.Which of these is recycle (make new things)? (a) pulp old paper (b) buy less packaging (c) fix a dripping tap (d) plant in old tyres
27. 27.🪢 Tension or compression: a tow rope on a car? (a) compression (b) tension
28. 28.True or false: a biomedical engineer designs a flyover. (a) True (b) False
29. 29.📋 For a model bridge challenge, is “be under 30 cm tall” a constraint or a criterion? (a) a criterion (b) a constraint
30. 30.Which job is a protractor for? (a) check a shelf is level (b) measure an angle (c) measure a long length (d) turn a screw
31. 31.True or false: to do all the work alone is poor teamwork. (a) False (b) True
32. 32.🏋️ Mechanical advantage (MA) = … (a) load ÷ effort (b) load × effort (c) load + effort (d) effort ÷ load
33. 33.💪 A bag has a mass of 35 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
34. 34.🪝 A winch has a wheel of radius 30 cm and an axle of radius 5 cm. What effort on the wheel lifts a 540 N bucket on the axle, in newtons? (ideal)
35. 35.🪢 Tension is a force that … (a) heats things (b) turns things (c) pulls or stretches (d) pushes or squeezes
36. 36.⚖️ Which class of lever is a lemon squeezer? (a) class 2 (b) class 3 (c) class 1
37. 37.📋 For a model bridge challenge, is “spend at most ₹100” a constraint or a criterion? (a) a constraint (b) a criterion
38. 38.🌉 Which bridge type: “stones squeezed together”? (a) suspension bridge (b) arch bridge (c) beam bridge
39. 39.True or false: “stand in a fan breeze” is a criterion (a goal). (a) True (b) False
40. 40.🏚️ Three solid model towers are made of the same material. Tower A is 60 cm tall on a 20 cm wide base, tower B is 200 cm tall on a 40 cm base and tower C is 280 cm tall on a 40 cm base. Which is the easiest to tip over? (a) tower C (b) tower B (c) tower A

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