Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 478 · 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 simple machine is a nut and bolt? (a) wedge (b) inclined plane (c) lever (d) screw
2. 2.🪝 A bucket weighing 40 N is lifted with a single fixed pulley at the top of a well. What effort is needed, in newtons? (ideal pulley, no friction)
3. 3.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: sandpaper 8 N, ice 2 N, a wooden plank 4 N, a carpet 6 N. Which surface gave the most friction? (a) a carpet (b) ice (c) a wooden plank (d) sandpaper
4. 4.⚖️ Which class of lever is a lemon squeezer? (a) class 3 (b) class 1 (c) class 2
5. 5.🧪 In a fair test, how many things do you change at a time? (a) two (b) one (c) none (d) all of them
6. 6.♻️ A project report has 76 pages. How many sheets of paper are needed if it is printed on both sides of each sheet?
7. 7.🧱 Is aluminium an electrical conductor or an insulator? (a) an insulator (b) a conductor
8. 8.🔺 A frame shaped like a triangle is made of straws joined by loose pins, with 0 corner-to-corner braces. Is it rigid or wobbly? (a) wobbly (b) rigid
9. 9.🔍 Which is the odd one out? (a) a window blind cord (b) a chisel (c) a flagpole rope wheel (d) a well-bucket rope wheel
10. 10.True or false: to wear safety goggles is safe. (a) False (b) True
11. 11.True or false: a train helps people cross a wide river. (a) True (b) False
12. 12.🦺 In the workshop, is it safe to cut away from your body? (a) safe (b) not safe
13. 13.⚖️ A seesaw balances. Ravi (? N) sits 3 m from the pivot on one side; Asha (510 N) sits 4 m from the pivot on the other side. What is the missing weight in newtons?
14. 14.♻️ Reduce, reuse or recycle: melt cans into new cans? (a) reuse (b) reduce (c) recycle
15. 15.⚖️ Turning effect = force × … (a) time taken (b) colour of bar (c) mass of fulcrum (d) distance from fulcrum
16. 16.Which of these is recycle (make new things)? (a) reuse gift paper (b) pulp old paper (c) buy less packaging (d) give old books away
17. 17.🏋️ Work is done when a force moves something … (a) without moving it (b) only upwards (c) through a distance (d) very slowly
18. 18.True or false: an electrical engineer designs power lines. (a) True (b) False
19. 19.True or false: “use only paper and tape” is a constraint (a limit). (a) True (b) False
20. 20.⚖️ A lever bar balances. The load is 120 N at 20 cm from the fulcrum. The effort is 60 N at ? cm from the fulcrum on the other side. What is the missing distance in centimetres?
21. 21.🛠️ Engineers use maths and which other subject the most? (a) music (b) science (c) cooking (d) dance
22. 22.🤝 A team of 4 shares 8 equal jobs fairly. Each job takes 5 minutes. How many minutes does each person work?
23. 23.True or false: to laugh at ideas is poor teamwork. (a) False (b) True
24. 24.⚖️ A lever bar balances. The load is 600 N at ? cm from the fulcrum. The effort is 120 N at 100 cm from the fulcrum on the other side. What is the missing distance in centimetres?
25. 25.True or false: a tunnel helps people make water safe to drink. (a) True (b) False
26. 26.True or false: “tall towers hold cables” is a suspension bridge. (a) True (b) False
27. 27.🧱 Which material is best for a window pane? (a) wood (b) steel (c) brick (d) glass
28. 28.⚖️ Along a straight bar, measured from the left end, the effort is at 30 cm, the fulcrum at 80 cm and the load at 60 cm. Which class of lever is it? (a) class 2 (b) class 1 (c) class 3
29. 29.True or false: a chemical engineer writes app software. (a) False (b) True
30. 30.True or false: closing a drawer is a push. (a) False (b) True
31. 31.Which of these needs a flexible material? (a) the core of a wire (b) a hair band (c) an umbrella cover (d) a tea flask lining
32. 32.True or false: a tall bridge tower is in compression (pushed). (a) False (b) True
33. 33.🛞 More or less friction: oil on a squeaky hinge? (a) more friction (b) less friction
34. 34.🔺 A frame shaped like a pentagon is made of straws joined by loose pins, with 2 corner-to-corner braces. Is it rigid or wobbly? (a) wobbly (b) rigid
35. 35.⚖️ Along a straight bar, measured from the left end, the effort is at 0 cm, the fulcrum at 30 cm and the load at 70 cm. Which class of lever is it? (a) class 2 (b) class 1 (c) class 3
36. 36.🔢 To follow the engineering design process, which comes first: “Create” or “Improve”? (a) Improve (b) Create
37. 37.🧱 Which property matters most for a raincoat? (a) transparent (b) electrical conductor (c) heat insulator (d) waterproof
38. 38.📋 Constraint: the tower must be no taller than 60 cm. The team’s tower is 64 cm tall. Is it within the constraint? (a) No (b) Yes
39. 39.Which job does a mechanical engineer do? (a) designs artificial limbs (b) makes medicines in bulk (c) designs a gearbox (d) writes app software
40. 40.💪 A bag has a mass of 37 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?

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