Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 107 · 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.🌉 What holds up a long beam bridge in the middle? (a) cables only (b) piers (c) balloons (d) nothing
2. 2.⚖️ To lift a heavy rock with a crowbar more easily, push … (a) on the fulcrum (b) far from the fulcrum (c) on the rock (d) near the fulcrum
3. 3.📋 Your team’s budget is ₹76. You must buy one roll of tape for ₹10. Straws cost ₹3 each. What is the greatest number of straws you can buy?
4. 4.♻️ Is diesel a renewable or a non-renewable energy source? (a) renewable (b) non-renewable
5. 5.🏋️ Work is done when a force moves something … (a) through a distance (b) very slowly (c) only upwards (d) without moving it
6. 6.What does the builder do? (a) runs the tests (b) keeps the design notes (c) puts the model together (d) writes down results
7. 7.True or false: a pair of tweezers is a class 1 lever (fulcrum in the middle). (a) True (b) False
8. 8.♻️ Is flowing river water a renewable or a non-renewable energy source? (a) non-renewable (b) renewable
9. 9.Which job does a computer engineer do? (a) builds rockets (b) wires a new building (c) writes app software (d) designs car engines
10. 10.🔍 Which is the odd one out? (a) cotton cloth (b) glass (c) graphite (d) clay pottery
11. 11.💪 In a tug of war, one team pulls left with 95 N and the other pulls right with 15 N. What is the size of the net force, in newtons?
12. 12.🔍 Which is the odd one out? (a) building tall and narrow (b) stacking loose bricks (c) fitting rubber base pads (d) making brittle joints
13. 13.True or false: a biomedical engineer builds hospital scanners. (a) False (b) True
14. 14.Which of these is a screw? (a) a door stopper (b) a window blind cord (c) a claw hammer on a nail (d) a wood screw
15. 15.📋 For a model bridge challenge, is “float for 1 minute” a constraint or a criterion? (a) a criterion (b) a constraint
16. 16.True or false: to cut a wooden plank, use a saw. (a) False (b) True
17. 17.📋 Criterion: the model bridge must hold at least 900 g. In the test it held 1000 g. Does it meet the criterion? (a) Yes (b) No
18. 18.♻️ Reduce, reuse or recycle: print on both sides? (a) reuse (b) recycle (c) reduce
19. 19.🌉 Which bridge type: “good for short gaps”? (a) arch bridge (b) suspension bridge (c) beam bridge
20. 20.📐 On a plan, 1 cm stands for 5 m. A wall is 17 cm long on the plan. How long is the real wall, in metres?
21. 21.True or false: to find the limits is the Ask step. (a) True (b) False
22. 22.🛞 More or less friction: a wet tiled floor? (a) less friction (b) more friction
23. 23.🔢 To follow the engineering design process, which comes first: “Test” or “Improve”? (a) Test (b) Improve
24. 24.⚖️ A lever bar balances. The load is 210 N at ? cm from the fulcrum. The effort is 350 N at 30 cm from the fulcrum on the other side. What is the missing distance in centimetres?
25. 25.🛠️ What does an engineer do before building anything? (a) paints the model (b) buys every material (c) understands the problem (d) builds at once
26. 26.🔍 Which is the odd one out? (a) having a wide base (b) using a heavy roof (c) keeping a simple shape (d) using a light roof
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 250 g and design C held 200 g. Which design was the weakest? (a) design B (b) design A (c) design C
28. 28.🔍 Which is the odd one out? (a) a hanging lamp chain (b) a tug of war rope (c) a pillar under a roof (d) a stretched rubber band
29. 29.🔍 Which is the odd one out? (a) change lots at once (b) guess, do not measure (c) hide a failed test (d) repeat each test
30. 30.🔺 A flat frame has 7 straight sides joined by loose pins at the corners. What is the least number of corner-to-corner braces needed to make it rigid?
31. 31.🌉 In a suspension bridge, the main cables are in … (a) friction (b) no force (c) compression (d) tension
32. 32.Which of these is reduce (use less)? (a) use a jar as a pen stand (b) plant in old tyres (c) melt glass into new jars (d) buy less packaging
33. 33.⚖️ A seesaw balances. Zoya (? N) sits 1 m from the pivot on one side; Ravi (150 N) sits 3 m from the pivot on the other side. What is the missing weight in newtons?
34. 34.🛞 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 3 N. How many newtons more were needed on a carpet than on ice?
35. 35.🔍 Which is the odd one out? (a) a tent guy rope (b) a brick at a wall base (c) a table leg (d) a bridge pier
36. 36.⚖️ Along a straight bar, measured from the left end, the effort is at 60 cm, the fulcrum at 40 cm and the load at 0 cm. Which class of lever is it? (a) class 3 (b) class 2 (c) class 1
37. 37.🔢 To follow the engineering design process, which is the FIRST step? (a) Test (b) Improve (c) Create (d) Ask
38. 38.🔍 Which is the odd one out? (a) sand on a slippery path (b) chalk on a gym bar (c) a smooth steel slide (d) a box pushed on carpet
39. 39.🔢 To follow the engineering design process, what comes right after “Test”? (a) Ask (b) Improve (c) Create (d) Imagine
40. 40.🧑‍🔧 Which kind of engineer designs factory machines? (a) electrical (b) aerospace (c) computer (d) mechanical

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