Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 532 · 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 bridge helps people carry many people far. (a) False (b) True
2. 2.🔺 Which strong shape does a plank over a drain use? (a) arch (b) dome (c) beam (d) triangle
3. 3.📋 Criterion: the model bridge must hold at least 500 g. In the test it held 600 g. Does it meet the criterion? (a) No (b) Yes
4. 4.⚙️ How many simple machines are there in the usual list? (a) 10 (b) 6 (c) 12 (d) 3
5. 5.True or false: a beam balance is a class 1 lever (fulcrum in the middle). (a) True (b) False
6. 6.🌉 Which bridge type: “a flat deck on piers”? (a) beam bridge (b) suspension bridge (c) arch bridge
7. 7.🔺 Which shape keeps its shape best when its corners are pinned? (a) triangle (b) hexagon (c) square (d) rectangle
8. 8.⚖️ A lever bar balances. The load is 180 N at ? cm from the fulcrum. The effort is 30 N at 60 cm from the fulcrum on the other side. What is the missing distance in centimetres?
9. 9.🪝 A wheel and axle is a big wheel fixed to … (a) a loose rope (b) a sharp wedge (c) a smaller rod (axle) (d) a flat ramp
10. 10.True or false: petrol is a non-renewable energy source. (a) False (b) True
11. 11.Which need does a telephone meet? (a) make water safe to drink (b) talk to someone far away (c) go through a mountain (d) store water for summer
12. 12.True or false: “spend at most ₹100” is a criterion (a goal). (a) False (b) True
13. 13.True or false: “be under 30 cm tall” is a constraint (a limit). (a) True (b) False
14. 14.🌉 Which bridge type: “good for short gaps”? (a) suspension bridge (b) beam bridge (c) arch bridge
15. 15.🔺 One side of a straw bridge is a row of 9 triangles standing point-up and point-down in turn, each sharing a side with the next. How many straws does it use?
16. 16.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
17. 17.⚖️ 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 1 (c) class 3
18. 18.🪢 Tension or compression: a stretched rubber band? (a) compression (b) tension
19. 19.🪝 A winch has a wheel of radius 24 cm and an axle of radius 3 cm. What effort on the wheel lifts a 1600 N bucket on the axle, in newtons? (ideal)
20. 20.🔺 Why can an arch carry heavy loads? (a) it bends easily (b) it is very light (c) it is hollow (d) it works in compression
21. 21.🔄 In which step do engineers draw a labelled diagram? (a) Test (b) Ask (c) Improve (d) Plan
22. 22.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a glass sheet 5 N, a carpet 7 N, sandpaper 10 N, ice 1 N. Which surface gave the most friction? (a) a glass sheet (b) ice (c) a carpet (d) sandpaper
23. 23.⚙️ Which simple machine is a screw jack? (a) wedge (b) screw (c) wheel and axle (d) lever
24. 24.🌉 Which bridge type: “a rope bridge in hills”? (a) beam bridge (b) suspension bridge (c) arch bridge
25. 25.🪝 A load of 500 N hangs from a pulley system in which 2 rope sections hold up the load. What effort is needed, in newtons? (ideal pulleys)
26. 26.♻️ A project report has 94 pages. How many sheets of paper are needed if it is printed on both sides of each sheet?
27. 27.💪 In which unit do we measure force? (a) metre (m) (b) second (s) (c) newton (N) (d) litre (L)
28. 28.🔍 Which is the odd one out? (a) iron (b) clay pottery (c) graphite (d) steel
29. 29.True or false: a crane lifting cable is in compression (pushed). (a) True (b) False
30. 30.🏋️ A force of 330 N pushes a cart 5 m along the floor. How much work is done, in joules?
31. 31.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
32. 32.💪 In a tug of war, one team pulls right with 50 N and the other pulls left with 15 N. What is the size of the net force, in newtons?
33. 33.🔧 Which tool would you use to tighten a nut? (a) a saw (b) a hammer (c) a protractor (d) a spanner
34. 34.📋 Your team’s budget is ₹36. You must buy one roll of tape for ₹10. Straws cost ₹2 each. What is the greatest number of straws you can buy?
35. 35.Which of these is caused by muscular force? (a) rubbing hands warms them (b) rain falls to the ground (c) a magnet picks up pins (d) pedalling a cycle
36. 36.True or false: using flexible joints makes a building less safe in earthquakes. (a) False (b) True
37. 37.🔍 Which is the odd one out? (a) a water tap handle (b) a nut and bolt (c) a bottle cap (d) a jar lid
38. 38.⚖️ A seesaw balances. Arjun (? N) sits 4 m from the pivot on one side; Asha (400 N) sits 1 m from the pivot on the other side. What is the missing weight in newtons?
39. 39.🔍 Which is the odd one out? (a) powder on a carrom board (b) skating on ice (c) a tyre with deep treads (d) a smooth steel slide
40. 40.Which need does a solar panel meet? (a) talk to someone far away (b) make water safe to drink (c) carry many people far (d) make power from sunlight

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