Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 189 · 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 team of 4 shares 8 equal jobs fairly. Each job takes 9 minutes. How many minutes does each person work?
2. 2.True or false: a bicycle frame uses a beam. (a) True (b) False
3. 3.Which job is a hammer for? (a) make a hole in wood (b) tighten a nut (c) drive in a nail (d) measure an angle
4. 4.💪 In which unit do we measure force? (a) second (s) (b) metre (m) (c) litre (L) (d) newton (N)
5. 5.🪝 A pulley system lifts a 240 N load with an effort of 80 N. What is its mechanical advantage (MA)?
6. 6.🏚️ Three solid model towers are made of the same material. Tower A is 150 cm tall on a 30 cm wide base, tower B is 80 cm tall on a 20 cm base and tower C is 60 cm tall on a 30 cm base. Which is the hardest to tip over? (a) tower B (b) tower A (c) tower C
7. 7.💪 Which force is at work: squeezing a lemon? (a) friction (b) magnetic force (c) gravity (d) muscular force
8. 8.🛠️ What does an engineer mainly do? (a) grows crops (b) sells tickets (c) designs useful solutions (d) only paints pictures
9. 9.🤝 Is it good or poor teamwork to agree before changing? (a) good teamwork (b) poor teamwork
10. 10.📐 On a plan, 1 cm stands for 2 m. A wall is 7 cm long on the plan. How long is the real wall, in metres?
11. 11.🌉 A beam bridge 60 m long is split by piers into 6 equal spans. How long is each span, in metres?
12. 12.🏋️ A longer ramp to the same height needs … (a) more effort (b) less effort (c) the same effort (d) no effort
13. 13.True or false: a lift is made by engineers. (a) True (b) False
14. 14.True or false: “deck hangs from cables” is an arch bridge. (a) True (b) False
15. 15.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a wooden plank 4 N, a carpet 8 N, ice 1 N, a glass sheet 2 N. Which surface gave the least friction? (a) a carpet (b) a glass sheet (c) ice (d) a wooden plank
16. 16.🔺 Which shape keeps its shape best when its corners are pinned? (a) triangle (b) square (c) rectangle (d) hexagon
17. 17.🪢 A beam rests on two supports and is pressed down in the middle. Its bottom edge is … (a) twisted (b) not affected (c) squeezed (compression) (d) stretched (tension)
18. 18.⚙️ Which simple machine is a knife edge? (a) inclined plane (b) pulley (c) wedge (d) lever
19. 19.🏋️ A force of 230 N pushes a cart 10 m along the floor. How much work is done, in joules?
20. 20.📋 Your team’s budget is ₹28. You must buy one roll of tape for ₹5. Straws cost ₹2 each. What is the greatest number of straws you can buy?
21. 21.Which of these needs an electrical conductor? (a) a spectacle lens (b) a tea flask lining (c) a boat hull (d) a plug pin
22. 22.⚖️ 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 3 (c) class 1
23. 23.🧪 A paper bridge was tested three times. It held 340 g, 250 g and 370 g. What is the mean (average) load it held, in grams?
24. 24.📋 For a model bridge challenge, is “fit on a school desk” a constraint or a criterion? (a) a criterion (b) a constraint
25. 25.🔺 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
26. 26.🛠️ Is a coral reef made by engineers or found in nature? (a) found in nature (b) made by engineers
27. 27.🔍 Which is the odd one out? (a) a playground slide (b) a water tap handle (c) a round doorknob (d) a well winch handle
28. 28.🤝 A team plans for 35 minutes, builds for 35 minutes and then tests for 30 minutes, one after another. How many minutes is that in all?
29. 29.🪢 Tension or compression: a swing chain? (a) compression (b) tension
30. 30.⚖️ What is the pivot point of a lever called? (a) the effort (b) the fulcrum (c) the load (d) the axle
31. 31.💪 Is pushing a swing a push or a pull? (a) a pull (b) a push
32. 32.🛞 More or less friction: a smooth steel slide? (a) less friction (b) more friction
33. 33.True or false: an electrical engineer wires a new building. (a) False (b) True
34. 34.📐 On a plan, 1 cm stands for 2 m. A real bridge is 34 m long. How long is it on the plan, in centimetres?
35. 35.True or false: a computer engineer designs factory machines. (a) False (b) True
36. 36.🔍 Which is the odd one out? (a) aluminium (b) copper (c) cotton cloth (d) graphite
37. 37.Which of these is in compression (pushed)? (a) a pillar under a roof (b) a stretched rubber band (c) a hanging lamp chain (d) a tent guy rope
38. 38.🧑‍🔧 Which branch of engineering designs machines with moving parts? (a) biomedical (b) mechanical (c) civil (d) chemical
39. 39.💪 In a tug of war, one team pulls left with 80 N and the other pulls right with 50 N. What is the size of the net force, in newtons?
40. 40.🏋️ A force of 500 N pushes a cart 8 m along the floor. How much work is done, in joules?

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