Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 779 · 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 class of lever is a seesaw? (a) class 3 (b) class 2 (c) class 1
2. 2.🤝 In a design team, who cuts and joins parts? (a) team leader (b) materials manager (c) builder (d) recorder
3. 3.🌉 Which bridge type can cross the widest gap in one span? (a) beam bridge (b) arch bridge (c) suspension bridge (d) log bridge
4. 4.⚖️ To lift a heavy rock with a crowbar more easily, push … (a) far from the fulcrum (b) on the rock (c) on the fulcrum (d) near the fulcrum
5. 5.📋 A constraint is … (a) a final test (b) a kind of glue (c) a limit you must keep to (d) a goal for success
6. 6.Which of these needs a transparent material? (a) a spectacle lens (b) a tea flask lining (c) a raincoat (d) a switch contact
7. 7.🪝 Fixed or movable pulley: which one stays in one place? (a) a fixed pulley (b) a movable pulley
8. 8.🪢 Compression is a force that … (a) cools things (b) pulls or stretches (c) pushes or squeezes (d) makes light
9. 9.What does the tester do? (a) cuts and joins parts (b) tracks what is used up (c) shares out the jobs (d) runs the tests
10. 10.📐 How many metres are in 1 kilometre? (a) 1000 (b) 10 (c) 10000 (d) 100
11. 11.What does the team leader do? (a) shares out the jobs (b) keeps the design notes (c) puts the model together (d) writes down results
12. 12.True or false: to give kind feedback is good teamwork. (a) False (b) True
13. 13.Which of these is in tension (pulled)? (a) a pillar under a roof (b) a bridge pier (c) a tow rope on a car (d) a temple column
14. 14.📋 Your team’s budget is ₹28. You must buy one roll of tape for ₹10. Straws cost ₹2 each. What is the greatest number of straws you can buy?
15. 15.📋 Constraint: the tower must be no taller than 40 cm. The team’s tower is 46 cm tall. Is it within the constraint? (a) No (b) Yes
16. 16.⚖️ In a class 3 lever, what is in the middle? (a) the pulley (b) the load (c) the fulcrum (d) the effort
17. 17.🔺 Which strong shape does a slab over a canal use? (a) arch (b) dome (c) triangle (d) beam
18. 18.🏋️ A 16 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
19. 19.True or false: to make a hole in wood, use a tape measure. (a) True (b) False
20. 20.💪 A bag has a mass of 35 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
21. 21.Which of these uses a dome? (a) a fort gateway (b) a plank over a drain (c) a round palace roof (d) a slab over a canal
22. 22.📋 For a model bridge challenge, is “hold up 500 g” a constraint or a criterion? (a) a criterion (b) a constraint
23. 23.🔢 To follow the engineering design process, which comes first: “Improve” or “Test”? (a) Test (b) Improve
24. 24.Which of these is a suspension bridge? (a) the longest spans of all (b) stones squeezed together (c) a flat deck on piers (d) a curve under the deck
25. 25.🛞 More or less friction: a rough doormat? (a) more friction (b) less friction
26. 26.🏚️ Why are flexible joints good in an earthquake? (a) they look nice (b) they are cheap (c) they stop shaking (d) they bend, not break
27. 27.🏚️ Three solid model towers are made of the same material. Tower A is 240 cm tall on a 40 cm wide base, tower B is 200 cm tall on a 40 cm base and tower C is 90 cm tall on a 30 cm base. Which is the hardest to tip over? (a) tower B (b) tower C (c) tower A
28. 28.🪝 More rope sections holding a load means … (a) more effort needed (b) less effort needed (c) no change (d) the load floats
29. 29.🧪 A paper bridge was tested three times. It held 430 g, 320 g and 270 g. What is the mean (average) load it held, in grams?
30. 30.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a carpet 7 N, ice 2 N, a glass sheet 3 N, a wooden plank 6 N. How many newtons more were needed on a carpet than on ice?
31. 31.🔍 Which is the odd one out? (a) a wheel on ball bearings (b) chalk on a gym bar (c) powder on a carrom board (d) oil on a squeaky hinge
32. 32.⚖️ A lever bar balances. The load is 90 N at 20 cm from the fulcrum. The effort is ? N at 90 cm from the fulcrum on the other side. What is the missing force in newtons?
33. 33.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
34. 34.⚙️ Which simple machine is a chisel? (a) wedge (b) lever (c) screw (d) pulley
35. 35.🪝 A pulley system lifts a 480 N load with an effort of 160 N. What is its mechanical advantage (MA)?
36. 36.🔢 To follow the engineering design process, which comes first: “Improve” or “Imagine”? (a) Improve (b) Imagine
37. 37.Which of these is made by engineers? (a) a waterfall (b) a ceiling fan (c) a seashell (d) a river
38. 38.🧑‍🔧 Which kind of engineer designs factory machines? (a) aerospace (b) mechanical (c) electrical (d) chemical
39. 39.⚖️ Along a straight bar, measured from the left end, the effort is at 30 cm, the fulcrum at 10 cm and the load at 70 cm. Which class of lever is it? (a) class 1 (b) class 3 (c) class 2
40. 40.🌉 In a stone arch bridge, the stones are in … (a) no force (b) tension (c) friction (d) compression

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