Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 693 · 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.🏚️ Where should heavy water tanks go in a quake zone? (a) on the very top (b) low down (c) on a thin pole (d) hanging outside
2. 2.🪝 More rope sections holding a load means … (a) more effort needed (b) the load floats (c) less effort needed (d) no change
3. 3.🏋️ A machine lifts a load of 960 N when you push with 160 N. What is its mechanical advantage (MA)?
4. 4.🔍 Which is the odd one out? (a) use only paper and tape (b) spend at most ₹100 (c) be under 30 cm tall (d) keep ice for 1 hour
5. 5.Which of these needs a transparent material? (a) a magnifier lens (b) an umbrella cover (c) a water tank (d) a yoga mat
6. 6.🔍 Which is the odd one out? (a) finish in 40 minutes (b) be under 30 cm tall (c) use at most 20 straws (d) hold up 500 g
7. 7.True or false: a pair of scissors is a class 3 lever (effort in the middle). (a) False (b) True
8. 8.🌉 What holds up a long beam bridge in the middle? (a) piers (b) nothing (c) cables only (d) balloons
9. 9.📋 Criterion: the model bridge must hold at least 900 g. In the test it held 850 g. Does it meet the criterion? (a) Yes (b) No
10. 10.🔍 Which is the odd one out? (a) keeping a simple shape (b) adding steel to concrete (c) raising heavy tanks high (d) having a wide base
11. 11.🔺 One side of a straw bridge is a row of 11 triangles standing point-up and point-down in turn, each sharing a side with the next. How many straws does it use?
12. 12.Which need does a microscope meet? (a) see very tiny things (b) make water safe to drink (c) make power from sunlight (d) talk to someone far away
13. 13.🪢 Tension or compression: a hanging lamp chain? (a) tension (b) compression
14. 14.📋 For a model bridge challenge, is “use at most 20 straws” a constraint or a criterion? (a) a criterion (b) a constraint
15. 15.🔍 Which is the odd one out? (a) keep ice for 1 hour (b) use only paper and tape (c) carry 10 coins (d) float for 1 minute
16. 16.🏋️ A 19 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
17. 17.True or false: diesel is a renewable energy source. (a) False (b) True
18. 18.📐 How many metres are in 1 kilometre? (a) 10 (b) 100 (c) 10000 (d) 1000
19. 19.🦺 What protects your eyes when sawing or drilling? (a) safety goggles (b) sunglasses (c) a cap (d) nothing
20. 20.Which of these is a pulley? (a) a wood screw (b) a flagpole rope wheel (c) a steering wheel (d) a door stopper
21. 21.♻️ Reduce, reuse or recycle: plant in old tyres? (a) reuse (b) recycle (c) reduce
22. 22.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: sandpaper 11 N, a glass sheet 3 N, a wooden plank 6 N, a carpet 7 N. Which surface gave the least friction? (a) a glass sheet (b) a carpet (c) sandpaper (d) a wooden plank
23. 23.⚖️ In a class 1 lever, what is in the middle? (a) the effort (b) the fulcrum (c) nothing (d) the load
24. 24.True or false: a dam helps people cross a wide river. (a) False (b) True
25. 25.♻️ A school bench is made from 450 recycled plastic bottles. How many benches can be made from 4050 bottles?
26. 26.🔺 How do engineers stop a square frame from wobbling? (a) make it bigger (b) take off a side (c) paint it (d) add a diagonal brace
27. 27.🧪 A paper bridge was tested three times. It held 250 g, 220 g and 280 g. What is the mean (average) load it held, in grams?
28. 28.📋 Criteria are … (a) goals a design must meet (b) the team names (c) the limits on money (d) the tools you use
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 320 g and design C held 270 g. Which design was the strongest? (a) design A (b) design B (c) design C
30. 30.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
31. 31.📋 For a model bridge challenge, is “keep ice for 1 hour” a constraint or a criterion? (a) a constraint (b) a criterion
32. 32.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a wooden plank 3 N, a carpet 7 N, sandpaper 9 N, ice 2 N. Which surface gave the least friction? (a) a carpet (b) sandpaper (c) ice (d) a wooden plank
33. 33.Which of these is recycle (make new things)? (a) melt cans into new cans (b) switch off unused lights (c) buy less packaging (d) reuse gift paper
34. 34.♻️ A sustainable design … (a) protects the future (b) wastes water (c) uses the most plastic (d) lasts one day
35. 35.🪢 A beam rests on two supports and is pressed down in the middle. Its bottom edge is … (a) stretched (tension) (b) not affected (c) twisted (d) squeezed (compression)
36. 36.True or false: biogas from waste is a renewable energy source. (a) True (b) False
37. 37.True or false: coal is a renewable energy source. (a) False (b) True
38. 38.🪢 Tension or compression: a stone in an arch? (a) tension (b) compression
39. 39.💪 Which force is at work: an apple falls down? (a) gravity (b) magnetic force (c) muscular force (d) friction
40. 40.📐 On a plan, 1 cm stands for 10 m. A wall is 6 cm long on the plan. How long is the real wall, in metres?

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