Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 840 · 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 model car is drawn so that 1 cm stands for 40 cm. The car is 9 cm long in the drawing. How long is the real car, in centimetres?
2. 2.🔺 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) rigid (b) wobbly
3. 3.📐 A beam is 450 cm long. How long is it in metres? =
4. 4.🛞 Is friction helpful or a problem here: writing with a pencil? (a) helpful (b) a problem
5. 5.🏋️ A 17 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
6. 6.🏚️ Why is a wide base safer? (a) it is harder to tip over (b) it is lighter (c) it is colourful (d) it is taller
7. 7.🏚️ Why are flexible joints good in an earthquake? (a) they are cheap (b) they stop shaking (c) they look nice (d) they bend, not break
8. 8.🧑‍🔧 Which kind of engineer designs aeroplane wings? (a) electrical (b) aerospace (c) biomedical (d) civil
9. 9.🏚️ Does raising heavy tanks high make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
10. 10.⚖️ In a class 2 lever, what is in the middle? (a) the fulcrum (b) the effort (c) the load (d) the axle
11. 11.True or false: a crane arm uses a dome. (a) False (b) True
12. 12.🌉 Which bridge type: “stones squeezed together”? (a) beam bridge (b) arch bridge (c) suspension bridge
13. 13.True or false: “carry 10 coins” is a constraint (a limit). (a) True (b) False
14. 14.🔍 Which is the odd one out? (a) chalk on a gym bar (b) a grippy rubber sole (c) a rough doormat (d) a smooth steel slide
15. 15.⚖️ Turning effect = force × … (a) time taken (b) colour of bar (c) mass of fulcrum (d) distance from fulcrum
16. 16.⚖️ A lever bar balances. The load is 20 N at 30 cm from the fulcrum. The effort is ? N at 20 cm from the fulcrum on the other side. What is the missing force in newtons?
17. 17.📋 For a model bridge challenge, is “fit on a school desk” a constraint or a criterion? (a) a constraint (b) a criterion
18. 18.🧱 Is graphite an electrical conductor or an insulator? (a) an insulator (b) a conductor
19. 19.📐 A model car is drawn so that 1 cm stands for 20 cm. The car is 4 cm long in the drawing. How long is the real car, in centimetres?
20. 20.🧑‍🔧 Which kind of engineer writes app software? (a) civil (b) computer (c) electrical (d) biomedical
21. 21.🧱 Which property matters most for a plug pin? (a) waterproof (b) electrical conductor (c) flexible (d) transparent
22. 22.🔍 Which is the odd one out? (a) skating on ice (b) powder on a carrom board (c) oil on a squeaky hinge (d) chalk on a gym bar
23. 23.🏚️ What do engineers use to test models of buildings for earthquakes? (a) a telescope (b) a shake table (c) a fridge (d) a microscope
24. 24.True or false: using flexible joints makes a building safer in earthquakes. (a) False (b) True
25. 25.🔍 Which is the odd one out? (a) guess, do not measure (b) change only one thing (c) hide a failed test (d) change lots at once
26. 26.💪 Which force is at work: squeezing a lemon? (a) gravity (b) friction (c) muscular force (d) magnetic force
27. 27.🌉 Which bridge type: “the simplest bridge”? (a) beam bridge (b) suspension bridge (c) arch bridge
28. 28.🧱 Which material is best for the core of an electric wire? (a) glass (b) wood (c) copper (d) rubber
29. 29.📐 On a plan, 1 cm stands for 10 m. A wall is 2 cm long on the plan. How long is the real wall, in metres?
30. 30.True or false: a crane lifting cable is in compression (pushed). (a) True (b) False
31. 31.🧱 Is copper an electrical conductor or an insulator? (a) a conductor (b) an insulator
32. 32.🔍 Which is the odd one out? (a) guess, do not measure (b) use a new load each time (c) record every result (d) hide a failed test
33. 33.🔍 Which is the odd one out? (a) fit on a school desk (b) spend at most ₹100 (c) carry 10 coins (d) finish in 40 minutes
34. 34.True or false: a microscope helps people reach a top floor fast. (a) True (b) False
35. 35.🪝 A well winch has a handle (wheel) of radius 6 cm turning an axle of radius 2 cm. What is its mechanical advantage (MA)?
36. 36.🪢 Tension or compression: a temple column? (a) compression (b) tension
37. 37.True or false: a boat hull needs a waterproof material. (a) False (b) True
38. 38.⚖️ A lever bar balances. The load is 720 N at 40 cm from the fulcrum. The effort is ? N at 80 cm from the fulcrum on the other side. What is the missing force in newtons?
39. 39.Which of these uses a dome? (a) a shelf on two brackets (b) a round palace roof (c) an electric pylon (d) a truss bridge side
40. 40.⚖️ A seesaw balances. Meena (? N) sits 4 m from the pivot on one side; Kabir (600 N) sits 1 m from the pivot on the other side. What is the missing weight in newtons?

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