Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 526 · 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.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) build it with straws (b) sketch three ideas (c) read the challenge rules (d) strengthen the weak part
2. 2.📋 For a model bridge challenge, is “use only paper and tape” a constraint or a criterion? (a) a criterion (b) a constraint
3. 3.⚖️ A seesaw balances. Zoya (200 N) sits 3 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?
4. 4.🏚️ Where should heavy water tanks go in a quake zone? (a) hanging outside (b) on a thin pole (c) low down (d) on the very top
5. 5.True or false: a solar panel helps people reach a top floor fast. (a) False (b) True
6. 6.♻️ A school bench is made from 250 recycled plastic bottles. How many benches can be made from 1000 bottles?
7. 7.Which of these is a beam bridge? (a) stones squeezed together (b) the longest spans of all (c) pushes out on its ends (d) a flat deck on piers
8. 8.True or false: “a rope bridge in hills” is a suspension bridge. (a) False (b) True
9. 9.Which need does a tunnel meet? (a) reach a top floor fast (b) make power from sunlight (c) store water for summer (d) go through a mountain
10. 10.True or false: a table leg is in tension (pulled). (a) True (b) False
11. 11.🧪 In a fair test, how many things do you change at a time? (a) one (b) two (c) none (d) all of them
12. 12.True or false: to change only one thing is poor testing. (a) False (b) True
13. 13.🔍 Which is the odd one out? (a) cut towards your hand (b) play near a moving drill (c) use a cracked tool (d) tie back long hair
14. 14.🪢 A stage stands on 8 identical legs and each leg is squeezed with 975 N. What is the total load on the stage, in newtons?
15. 15.📐 On a plan, 1 cm stands for 5 m. A real bridge is 95 m long. How long is it on the plan, in centimetres?
16. 16.True or false: to record every result is good testing. (a) True (b) False
17. 17.Which of these is an arch bridge? (a) a rope bridge in hills (b) a curve under the deck (c) the simplest bridge (d) cables tied down at ends
18. 18.🪢 A beam rests on two supports and is pressed down in the middle. Its bottom edge is … (a) not affected (b) squeezed (compression) (c) twisted (d) stretched (tension)
19. 19.🌉 A beam bridge 250 m long is split by piers into 10 equal spans. How long is each span, in metres?
20. 20.🔍 Which is the odd one out? (a) measure the same way (b) repeat each test (c) record every result (d) use a new load each time
21. 21.True or false: to wear safety goggles is safe. (a) False (b) True
22. 22.True or false: “be under 30 cm tall” is a criterion (a goal). (a) True (b) False
23. 23.True or false: to laugh at ideas is good teamwork. (a) True (b) False
24. 24.Which of these happens in the Plan step? (a) ask who will use it (b) draw a labelled diagram (c) measure its performance (d) find the limits
25. 25.⚙️ A wedge is … (a) a bar on a pivot (b) two ramps back to back (c) a wheel on a rod (d) a rope on a wheel
26. 26.🔍 Which is the odd one out? (a) spend at most ₹100 (b) roll at least 2 metres (c) lift a cup of water (d) float for 1 minute
27. 27.📐 How many millimetres are in 1 centimetre? (a) 5 (b) 1000 (c) 10 (d) 100
28. 28.⚙️ Which simple machine is a jar lid? (a) wheel and axle (b) wedge (c) screw (d) lever
29. 29.🤝 How do engineers share a design with others? (a) only talking fast (b) clear labelled sketches (c) no drawings at all (d) secret notes
30. 30.💪 Is kicking a football a push or a pull? (a) a push (b) a pull
31. 31.⚖️ A seesaw balances. Meena (300 N) sits 4 m from the pivot on one side; Kabir (600 N) sits ? m from the pivot on the other side. What is the missing distance in metres?
32. 32.Which of these is found in nature? (a) a bridge (b) a banyan tree (c) a railway track (d) a ceiling fan
33. 33.🪝 A winch has a wheel of radius 6 cm and an axle of radius 1 cm. What effort on the wheel lifts a 960 N bucket on the axle, in newtons? (ideal)
34. 34.⚖️ A seesaw balances. Asha (720 N) sits 1 m from the pivot on one side; Kabir (180 N) sits ? m from the pivot on the other side. What is the missing distance in metres?
35. 35.🔺 How do engineers stop a square frame from wobbling? (a) paint it (b) take off a side (c) make it bigger (d) add a diagonal brace
36. 36.Which of these is in compression (pushed)? (a) a tug of war rope (b) a crane lifting cable (c) a table leg (d) a suspension cable
37. 37.🪝 A pulley system lifts a 510 N load with an effort of 170 N. What is its mechanical advantage (MA)?
38. 38.True or false: to put tools back after use is not safe. (a) True (b) False
39. 39.True or false: a fixed pulley halves the effort. (a) False (b) True
40. 40.True or false: a grippy rubber sole gives more friction. (a) True (b) False

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