Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 453 · 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 of these uses triangles? (a) a lintel over a door (b) a slab over a canal (c) a planetarium roof (d) a roof truss
2. 2.📋 Criterion: the model bridge must hold at least 600 g. In the test it held 500 g. Does it meet the criterion? (a) No (b) Yes
3. 3.⚖️ Which class of lever is a pair of scissors? (a) class 3 (b) class 1 (c) class 2
4. 4.♻️ A sustainable design … (a) lasts one day (b) protects the future (c) uses the most plastic (d) wastes water
5. 5.Which job does an aerospace engineer do? (a) makes medicines in bulk (b) plans a dam (c) plans a space mission (d) refines crude oil
6. 6.⚖️ Along a straight bar, measured from the left end, the effort is at 0 cm, the fulcrum at 70 cm and the load at 30 cm. Which class of lever is it? (a) class 3 (b) class 1 (c) class 2
7. 7.🧪 In a fair test, how many things do you change at a time? (a) two (b) one (c) all of them (d) none
8. 8.⚖️ A seesaw balances. Arjun (? N) sits 4 m from the pivot on one side; Asha (600 N) sits 4 m from the pivot on the other side. What is the missing weight in newtons?
9. 9.🔍 Which is the odd one out? (a) a playground slide (b) a road up a hill (c) a wheelchair ramp (d) a flagpole rope wheel
10. 10.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) use the same load (d) change lots at once
11. 11.⚖️ In a class 2 lever, what is in the middle? (a) the axle (b) the effort (c) the fulcrum (d) the load
12. 12.🛠️ What does an engineer mainly do? (a) grows crops (b) designs useful solutions (c) only paints pictures (d) sells tickets
13. 13.True or false: sand on a slippery path gives more friction. (a) True (b) False
14. 14.📐 A model car is drawn so that 1 cm stands for 20 cm. The car is 13 cm long in the drawing. How long is the real car, in centimetres?
15. 15.⚙️ A screw is really … (a) a ramp wrapped round (b) a tiny pulley (c) a kind of wheel (d) a bent lever
16. 16.🏚️ Does keeping a simple shape make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
17. 17.📐 On a plan, 1 cm stands for 20 m. A wall is 13 cm long on the plan. How long is the real wall, in metres?
18. 18.True or false: to redesign after testing is the Improve step. (a) True (b) False
19. 19.📋 Constraint: the tower must be no taller than 60 cm. The team’s tower is 62 cm tall. Is it within the constraint? (a) Yes (b) No
20. 20.🪢 Tension or compression: a suspension cable? (a) compression (b) tension
21. 21.🔍 Which is the odd one out? (a) hold up 500 g (b) float for 1 minute (c) carry 10 coins (d) fit on a school desk
22. 22.🤝 A team of 3 shares 6 equal jobs fairly. Each job takes 7 minutes. How many minutes does each person work?
23. 23.⚖️ Along a straight bar, measured from the left end, the effort is at 60 cm, the fulcrum at 20 cm and the load at 80 cm. Which class of lever is it? (a) class 1 (b) class 2 (c) class 3
24. 24.🧱 Is cotton cloth an electrical conductor or an insulator? (a) a conductor (b) an insulator
25. 25.📋 Criterion: the model bridge must hold at least 1000 g. In the test it held 1000 g. Does it meet the criterion? (a) Yes (b) No
26. 26.Which need does a telephone meet? (a) talk to someone far away (b) cross a wide river (c) go through a mountain (d) see very tiny things
27. 27.🔍 Which is the odd one out? (a) a grippy rubber sole (b) oil on a squeaky hinge (c) a wheel on ball bearings (d) powder on a carrom board
28. 28.True or false: a box pushed on carpet gives more friction. (a) True (b) False
29. 29.🔍 Which is the odd one out? (a) a playground slide (b) a bottle cap (c) a nut and bolt (d) a screw jack
30. 30.🏚️ Does using a light roof make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
31. 31.What does the team leader do? (a) puts the model together (b) writes down results (c) collects the supplies (d) keeps the team on track
32. 32.Which of these needs a waterproof material? (a) a yoga mat (b) a window pane (c) a skipping rope (d) a boat hull
33. 33.🏚️ Why are flexible joints good in an earthquake? (a) they bend, not break (b) they look nice (c) they are cheap (d) they stop shaking
34. 34.Which of these is a beam bridge? (a) deck hangs from cables (b) pushes out on its ends (c) stones squeezed together (d) a flat deck on piers
35. 35.⚖️ A seesaw balances. Zoya (540 N) sits 3 m from the pivot on one side; Ravi (540 N) sits ? m from the pivot on the other side. What is the missing distance in metres?
36. 36.🪝 A pulley system has 4 rope sections holding up the load. To lift the load by 2 m, how many metres of rope must you pull?
37. 37.🪢 A concrete slab weighing 7800 N rests evenly on 6 identical pillars. What compression force does each pillar carry, in newtons?
38. 38.♻️ A school bench is made from 500 recycled plastic bottles. How many benches can be made from 2500 bottles?
39. 39.🔧 Which tool would you use to check a shelf is level? (a) a spirit level (b) a hammer (c) a screwdriver (d) a protractor
40. 40.True or false: to change only one thing is poor testing. (a) False (b) True

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