Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 917 · 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.🏋️ A 2 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
2. 2.🪝 A pulley system lifts a 920 N load with an effort of 230 N. What is its mechanical advantage (MA)?
3. 3.📋 For a model bridge challenge, is “stand in a fan breeze” a constraint or a criterion? (a) a criterion (b) a constraint
4. 4.True or false: to laugh at ideas is good teamwork. (a) False (b) True
5. 5.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a wooden plank 5 N, a carpet 7 N, sandpaper 11 N, a glass sheet 1 N. Which surface gave the most friction? (a) a wooden plank (b) sandpaper (c) a carpet (d) a glass sheet
6. 6.What does the team leader do? (a) keeps the team on track (b) writes down results (c) cuts and joins parts (d) collects the supplies
7. 7.🛠️ A scientist asks “why does it happen?”. An engineer mostly asks … (a) who won the match? (b) why is the sky blue? (c) what is for lunch? (d) how can we build it?
8. 8.🛠️ Which of these is a problem an engineer could solve? (a) a lost cricket match (b) a sad song (c) a boring story (d) a road that floods
9. 9.🔺 A flat frame has 11 straight sides joined by loose pins at the corners. What is the least number of corner-to-corner braces needed to make it rigid?
10. 10.True or false: a volcano is made by engineers. (a) True (b) False
11. 11.🔍 Which is the odd one out? (a) carry scissors closed (b) cut away from your body (c) cut towards your hand (d) wear safety goggles
12. 12.♻️ Is diesel a renewable or a non-renewable energy source? (a) renewable (b) non-renewable
13. 13.🤝 How do engineers share a design with others? (a) no drawings at all (b) clear labelled sketches (c) only talking fast (d) secret notes
14. 14.True or false: a chemical engineer refines crude oil. (a) False (b) True
15. 15.🏚️ What do engineers use to test models of buildings for earthquakes? (a) a microscope (b) a telescope (c) a shake table (d) a fridge
16. 16.⚖️ Along a straight bar, measured from the left end, the effort is at 10 cm, the fulcrum at 50 cm and the load at 80 cm. Which class of lever is it? (a) class 2 (b) class 3 (c) class 1
17. 17.🏋️ Work is done when a force moves something … (a) very slowly (b) only upwards (c) without moving it (d) through a distance
18. 18.🏚️ Three solid model towers are made of the same material. Tower A is 40 cm tall on a 10 cm wide base, tower B is 60 cm tall on a 20 cm base and tower C is 240 cm tall on a 40 cm base. Which is the easiest to tip over? (a) tower C (b) tower B (c) tower A
19. 19.⚖️ A seesaw balances. Ravi (510 N) sits 2 m from the pivot on one side; Arjun (340 N) sits ? m from the pivot on the other side. What is the missing distance in metres?
20. 20.True or false: a table leg is in tension (pulled). (a) False (b) True
21. 21.True or false: a swing chain is in compression (pushed). (a) True (b) False
22. 22.📋 Your team’s budget is ₹26. You must buy one roll of tape for ₹15. Straws cost ₹1 each. What is the greatest number of straws you can buy?
23. 23.📐 On a plan, 1 cm stands for 10 m. A wall is 5 cm long on the plan. How long is the real wall, in metres?
24. 24.⚖️ A seesaw balances. Asha (? N) sits 3 m from the pivot on one side; Kabir (540 N) sits 2 m from the pivot on the other side. What is the missing weight in newtons?
25. 25.🤝 A team plans for 20 minutes, builds for 45 minutes and then tests for 20 minutes, one after another. How many minutes is that in all?
26. 26.True or false: to listen to every idea is good teamwork. (a) True (b) False
27. 27.🏋️ Pushing a crate 10 m took 800 J of work. What force was used, in newtons?
28. 28.True or false: a wet tiled floor gives less friction. (a) False (b) True
29. 29.Which of these uses a dome? (a) an electric pylon (b) a planetarium roof (c) a lintel over a door (d) a truss bridge side
30. 30.🛠️ People need to go through a mountain. Which invention helps? (a) a fridge (b) a tunnel (c) a water filter (d) a bridge
31. 31.True or false: a chisel is a screw. (a) True (b) False
32. 32.True or false: “a log across a stream” is a suspension bridge. (a) True (b) False
33. 33.🔢 To follow the engineering design process, what comes right after “Plan”? (a) Test (b) Ask (c) Imagine (d) Create
34. 34.🌉 Which bridge type: “good for short gaps”? (a) arch bridge (b) suspension bridge (c) beam bridge
35. 35.True or false: plucking a mango is a push. (a) False (b) True
36. 36.🏚️ 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 120 cm tall on a 30 cm base and tower C is 60 cm tall on a 10 cm base. Which is the hardest to tip over? (a) tower A (b) tower C (c) tower B
37. 37.💪 Is pulling a cart a push or a pull? (a) a pull (b) a push
38. 38.📐 On a plan, 1 cm stands for 5 m. A real bridge is 45 m long. How long is it on the plan, in centimetres?
39. 39.🔧 Which tool would you use to cut a wooden plank? (a) sandpaper (b) a saw (c) a spirit level (d) a screwdriver
40. 40.💪 Two equal forces push on a box from opposite sides. They are … (a) gravity (b) doubled (c) balanced (d) unbalanced

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