Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 309 · 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.🏋️ An 18 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
2. 2.True or false: “keep ice for 1 hour” is a constraint (a limit). (a) True (b) False
3. 3.Which need does a lift meet? (a) cross a wide river (b) go through a mountain (c) reach a top floor fast (d) store water for summer
4. 4.🏋️ A machine lifts a load of 240 N when you push with 120 N. What is its mechanical advantage (MA)?
5. 5.🌉 A beam bridge is 250 m long. Piers split it into equal spans of 25 m. How many spans are there?
6. 6.Which of these is made by engineers? (a) a banyan tree (b) a railway track (c) a coral reef (d) a rainbow
7. 7.⚖️ Along a straight bar, measured from the left end, the effort is at 0 cm, the fulcrum at 20 cm and the load at 10 cm. Which class of lever is it? (a) class 3 (b) class 2 (c) class 1
8. 8.Which of these is recycle (make new things)? (a) melt glass into new jars (b) buy less packaging (c) carry a cloth bag (d) print on both sides
9. 9.⚖️ A lever bar balances. The load is 160 N at ? cm from the fulcrum. The effort is 80 N at 20 cm from the fulcrum on the other side. What is the missing distance in centimetres?
10. 10.🌉 Which bridge type: “deck hangs from cables”? (a) suspension bridge (b) arch bridge (c) beam bridge
11. 11.🔢 To follow the engineering design process, what comes right after “Test”? (a) Imagine (b) Improve (c) Create (d) Ask
12. 12.⚙️ A screw is really … (a) a ramp wrapped round (b) a kind of wheel (c) a tiny pulley (d) a bent lever
13. 13.⚖️ A seesaw balances. Asha (240 N) sits ? m from the pivot on one side; Ravi (480 N) sits 2 m from the pivot on the other side. What is the missing distance in metres?
14. 14.Which of these is reuse (use again)? (a) buy less packaging (b) print on both sides (c) plant in old tyres (d) switch off unused lights
15. 15.Which of these uses a beam? (a) a plank over a drain (b) an igloo (c) an old stone bridge (d) a planetarium roof
16. 16.True or false: “deck hangs from cables” is a suspension bridge. (a) False (b) True
17. 17.⚖️ Turning effect = force × … (a) mass of fulcrum (b) colour of bar (c) distance from fulcrum (d) time taken
18. 18.True or false: to test it only once is good testing. (a) False (b) True
19. 19.📐 On a plan, 1 cm stands for 5 m. A wall is 20 cm long on the plan. How long is the real wall, in metres?
20. 20.♻️ A family used to throw away 3 plastic bags a week. They now carry cloth bags. How many plastic bags do they save in 8 weeks?
21. 21.🛠️ Is a seashell made by engineers or found in nature? (a) made by engineers (b) found in nature
22. 22.🏚️ Three solid model towers are made of the same material. Tower A is 50 cm tall on a 10 cm wide base, tower B is 90 cm tall on a 30 cm base and tower C is 60 cm tall on a 30 cm base. Which is the easiest to tip over? (a) tower A (b) tower B (c) tower C
23. 23.True or false: “float for 1 minute” is a criterion (a goal). (a) False (b) True
24. 24.⚙️ Which simple machine is a road up a hill? (a) wedge (b) inclined plane (c) screw (d) wheel and axle
25. 25.🏋️ A force of 120 N pushes a cart 2 m along the floor. How much work is done, in joules?
26. 26.🦺 Who should use hot glue guns and power tools in a kids’ project? (a) a stranger (b) any child alone (c) an adult (d) the youngest child
27. 27.🧑‍🔧 Which branch of engineering uses engineering to help doctors? (a) biomedical (b) aerospace (c) electrical (d) civil
28. 28.🤝 A teammate’s idea seems odd. What should you do first? (a) laugh at it (b) listen and ask why (c) ignore it (d) walk away
29. 29.🛞 More or less friction: a smooth steel slide? (a) less friction (b) more friction
30. 30.🌉 A beam bridge 120 m long rests on the two river banks and on piers in between, making equal spans of 20 m. How many piers are there?
31. 31.🔢 To follow the engineering design process, which comes first: “Improve” or “Test”? (a) Test (b) Improve
32. 32.🔍 Which is the odd one out? (a) a seashell (b) a waterfall (c) a volcano (d) a satellite
33. 33.⚖️ Which class of lever is a lemon squeezer? (a) class 2 (b) class 3 (c) class 1
34. 34.Which of these needs a flexible material? (a) a roof sheet (b) an umbrella cover (c) a magnifier lens (d) a skipping rope
35. 35.🪝 More rope sections holding a load means … (a) less effort needed (b) the load floats (c) more effort needed (d) no change
36. 36.🔍 Which is the odd one out? (a) roll at least 2 metres (b) fit on a school desk (c) spend at most ₹100 (d) be under 30 cm tall
37. 37.⚖️ A seesaw balances. Ravi (200 N) sits 2 m from the pivot on one side; Kabir (? N) sits 2 m from the pivot on the other side. What is the missing weight in newtons?
38. 38.⚖️ Going along a lever from one end to the other, the order is: fulcrum, load, effort. Which class of lever is it? (a) class 2 (b) class 1 (c) class 3
39. 39.True or false: using flexible joints makes a building safer in earthquakes. (a) True (b) False
40. 40.Which of these is in tension (pulled)? (a) a pillar under a roof (b) a brick at a wall base (c) a swing chain (d) a stone in an arch

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