Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 614 · 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 seesaw balances. Asha (130 N) sits 1 m from the pivot on one side; Kabir (? N) sits 1 m from the pivot on the other side. What is the missing weight in newtons?
2. 2.True or false: raising heavy tanks high makes a building less safe in earthquakes. (a) True (b) False
3. 3.🏋️ Can a simple machine reduce the work done? (a) no, work stays the same (b) yes, by half (c) only on Mondays (d) yes, always
4. 4.True or false: having a wide base makes a building less safe in earthquakes. (a) False (b) True
5. 5.🤝 A team plans for 10 minutes, builds for 40 minutes and then tests for 5 minutes, one after another. How many minutes is that in all?
6. 6.⚙️ Which simple machine is a knife edge? (a) wedge (b) inclined plane (c) lever (d) wheel and axle
7. 7.🔺 Which strong shape does a shelf on two brackets use? (a) arch (b) beam (c) dome (d) triangle
8. 8.True or false: a mechanical engineer designs a paint factory. (a) False (b) True
9. 9.Which of these needs a flexible material? (a) a yoga mat (b) a plug pin (c) a magnifier lens (d) a raincoat
10. 10.🛠️ What does an engineer do before building anything? (a) buys every material (b) paints the model (c) builds at once (d) understands the problem
11. 11.🔍 Which is the odd one out? (a) a railway track (b) a river (c) a banyan tree (d) a coral reef
12. 12.📐 On a plan, 1 cm stands for 2 m. A real bridge is 38 m long. How long is it on the plan, in centimetres?
13. 13.🔄 Which design-process step is it to draw a labelled diagram? (a) Improve (b) Create (c) Plan (d) Test
14. 14.🔍 Which is the odd one out? (a) graphite (b) copper (c) glass (d) steel
15. 15.🪝 More rope sections holding a load means … (a) more effort needed (b) no change (c) the load floats (d) less effort needed
16. 16.🔍 Which is the odd one out? (a) a mobile phone (b) a cloud (c) a water filter (d) a satellite
17. 17.Which of these is a screw? (a) a flagpole rope wheel (b) a door stopper (c) a window blind cord (d) a wood screw
18. 18.True or false: a cloud is made by engineers. (a) True (b) False
19. 19.Which need does a solar panel meet? (a) make power from sunlight (b) store water for summer (c) keep food fresh longer (d) reach a top floor fast
20. 20.🧑‍🔧 Which branch of engineering designs buildings, roads and bridges? (a) computer (b) biomedical (c) civil (d) chemical
21. 21.True or false: a beam balance is a class 3 lever (effort in the middle). (a) False (b) True
22. 22.🪝 A pulley system has 2 rope sections holding up the load. To lift the load by 6 m, how many metres of rope must you pull?
23. 23.💪 Is pulling up your socks a push or a pull? (a) a push (b) a pull
24. 24.🏚️ Where should heavy water tanks go in a quake zone? (a) hanging outside (b) on the very top (c) on a thin pole (d) low down
25. 25.True or false: to tie back long hair is safe. (a) False (b) True
26. 26.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
27. 27.🧪 In a fair test, how many things do you change at a time? (a) two (b) one (c) all of them (d) none
28. 28.📐 A model car is drawn so that 1 cm stands for 20 cm. The car is 6 cm long in the drawing. How long is the real car, in centimetres?
29. 29.🧱 Which material is best for the core of an electric wire? (a) wood (b) copper (c) glass (d) rubber
30. 30.🔍 Which is the odd one out? (a) a wheel on ball bearings (b) a box pushed on carpet (c) oil on a squeaky hinge (d) powder on a carrom board
31. 31.True or false: a tyre with deep treads gives more friction. (a) False (b) True
32. 32.⚖️ A seesaw balances. Meena (390 N) sits 4 m from the pivot on one side; Kabir (? N) sits 3 m from the pivot on the other side. What is the missing weight in newtons?
33. 33.💪 Two children push a box to the right, one with 35 N and the other with 100 N. What is the net (total) force on the box, in newtons?
34. 34.Which of these is in tension (pulled)? (a) a tall bridge tower (b) a table leg (c) a temple column (d) a tent guy rope
35. 35.Which of these is an inclined plane? (a) a bottle opener (b) a seesaw (c) a road up a hill (d) a knife edge
36. 36.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a wooden plank 7 N, a carpet 10 N, ice 3 N, a glass sheet 4 N. Which surface gave the least friction? (a) a wooden plank (b) ice (c) a carpet (d) a glass sheet
37. 37.🔺 Which strong shape does an electric pylon use? (a) arch (b) triangle (c) dome (d) beam
38. 38.⚖️ Along a straight bar, measured from the left end, the effort is at 40 cm, the fulcrum at 10 cm and the load at 50 cm. Which class of lever is it? (a) class 2 (b) class 3 (c) class 1
39. 39.True or false: “a flat deck on piers” is a suspension bridge. (a) True (b) False
40. 40.🤝 Is it good or poor teamwork to own up to a mistake? (a) poor teamwork (b) good teamwork

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