Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 476 · 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.True or false: a hanging lamp chain is in compression (pushed). (a) False (b) True
2. 2.🛞 How can we reduce friction in a machine? (a) make parts rough (b) add sand (c) oil the moving parts (d) press parts harder
3. 3.⚖️ Going along a lever from one end to the other, the order is: effort, fulcrum, load. Which class of lever is it? (a) class 1 (b) class 3 (c) class 2
4. 4.⚖️ A seesaw balances. Ravi (? N) sits 2 m from the pivot on one side; Kabir (400 N) sits 2 m from the pivot on the other side. What is the missing weight in newtons?
5. 5.♻️ Reduce, reuse or recycle: use a jar as a pen stand? (a) reduce (b) recycle (c) reuse
6. 6.True or false: a mountain is found in nature. (a) True (b) False
7. 7.🔍 Which is the odd one out? (a) a seesaw (b) a nutcracker (c) a wheelchair ramp (d) a claw hammer on a nail
8. 8.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
9. 9.⚖️ A lever balances when … (a) the fulcrum moves (b) both weights are equal (c) turning effects match (d) the bar is short
10. 10.♻️ Reduce, reuse or recycle: melt glass into new jars? (a) reduce (b) recycle (c) reuse
11. 11.🛞 Is friction helpful or a problem here: a door hinge squeaking? (a) helpful (b) a problem
12. 12.🏚️ Does having a wide base make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
13. 13.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) skip writing results (d) measure the same way
14. 14.True or false: “stand in a fan breeze” is a constraint (a limit). (a) True (b) False
15. 15.Which of these is caused by magnetic force? (a) brakes stop a bicycle (b) a thrown ball comes down (c) a fridge magnet sticks (d) rubbing hands warms them
16. 16.🔺 One side of a straw bridge is a row of 5 triangles standing point-up and point-down in turn, each sharing a side with the next. How many straws does it use?
17. 17.True or false: to grip and bend wire, use sandpaper. (a) False (b) True
18. 18.🏋️ A machine lifts a load of 640 N when you push with 160 N. What is its mechanical advantage (MA)?
19. 19.🔄 Which design-process step is it to define the problem? (a) Create (b) Plan (c) Ask (d) Imagine
20. 20.🪝 A load of 320 N hangs from a pulley system in which 4 rope sections hold up the load. What effort is needed, in newtons? (ideal pulleys)
21. 21.🏋️ Pushing a crate 2 m took 760 J of work. What force was used, in newtons?
22. 22.True or false: skating on ice gives less friction. (a) False (b) True
23. 23.🦺 In the workshop, is it safe to touch a hot glue tip? (a) safe (b) not safe
24. 24.📐 A beam is 780 cm long. How long is it in metres? =
25. 25.💪 Which force is at work: brakes stop a bicycle? (a) muscular force (b) gravity (c) magnetic force (d) friction
26. 26.True or false: to change only one thing is good testing. (a) True (b) False
27. 27.🏚️ Why are flexible joints good in an earthquake? (a) they look nice (b) they stop shaking (c) they bend, not break (d) they are cheap
28. 28.True or false: a pair of pliers is a class 2 lever (load in the middle). (a) False (b) True
29. 29.📐 Why do engineers use scale drawings? (a) to make them pretty (b) to save ink only (c) big things fit on paper (d) to hide sizes
30. 30.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a wooden plank 9 N, sandpaper 13 N, ice 4 N, a glass sheet 5 N. How many newtons more were needed on sandpaper than on ice?
31. 31.⚙️ How many simple machines are there in the usual list? (a) 12 (b) 6 (c) 10 (d) 3
32. 32.🔍 Which is the odd one out? (a) a seashell (b) a rainbow (c) a coral reef (d) a mobile phone
33. 33.🔺 Why can an arch carry heavy loads? (a) it bends easily (b) it is hollow (c) it is very light (d) it works in compression
34. 34.True or false: a car seat belt needs a flexible material. (a) True (b) False
35. 35.🧱 Which property matters most for a water tank? (a) flexible (b) electrical conductor (c) transparent (d) waterproof
36. 36.⚙️ Which simple machine is a flagpole rope wheel? (a) wheel and axle (b) inclined plane (c) pulley (d) lever
37. 37.🛠️ People need to talk to someone far away. Which invention helps? (a) a bridge (b) a fridge (c) a telephone (d) a solar panel
38. 38.🦺 In the workshop, is it safe to run while holding tools? (a) safe (b) not safe
39. 39.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
40. 40.⚖️ A seesaw balances. Zoya (280 N) sits ? m from the pivot on one side; Arjun (420 N) sits 2 m from the pivot on the other side. What is the missing distance in metres?

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