Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 219 · 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.🧪 Why repeat a test three times? (a) to use more paper (b) to get reliable results (c) it looks busy (d) the first is wrong
2. 2.True or false: an electrical engineer plans a power grid. (a) False (b) True
3. 3.⚖️ A lever bar balances. The load is ? N at 10 cm from the fulcrum. The effort is 10 N at 20 cm from the fulcrum on the other side. What is the missing force in newtons?
4. 4.🤝 How do engineers share a design with others? (a) clear labelled sketches (b) only talking fast (c) secret notes (d) no drawings at all
5. 5.True or false: “roll at least 2 metres” is a constraint (a limit). (a) False (b) True
6. 6.📐 On a plan, 1 cm stands for 2 m. A wall is 11 cm long on the plan. How long is the real wall, in metres?
7. 7.📐 On a plan, 1 cm stands for 2 m. A wall is 17 cm long on the plan. How long is the real wall, in metres?
8. 8.True or false: a nutcracker is a class 3 lever (effort in the middle). (a) True (b) False
9. 9.🧱 Which material is best for the core of an electric wire? (a) rubber (b) glass (c) copper (d) wood
10. 10.📐 Why do engineers use scale drawings? (a) to make them pretty (b) to hide sizes (c) to save ink only (d) big things fit on paper
11. 11.🌉 Which bridge type: “deck hangs from cables”? (a) suspension bridge (b) arch bridge (c) beam bridge
12. 12.True or false: using flexible joints makes a building safer in earthquakes. (a) True (b) False
13. 13.True or false: to define the problem is the Ask step. (a) False (b) True
14. 14.🏚️ Does leaving out steel bars make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
15. 15.True or false: to find the limits is the Create step. (a) True (b) False
16. 16.True or false: “roll at least 2 metres” is a criterion (a goal). (a) True (b) False
17. 17.♻️ A project report has 76 pages. How many sheets of paper are needed if it is printed on both sides of each sheet?
18. 18.True or false: to blame others for faults is good teamwork. (a) False (b) True
19. 19.🔍 Which is the odd one out? (a) skating on ice (b) sand on a slippery path (c) powder on a carrom board (d) a wheel on ball bearings
20. 20.⚖️ A seesaw balances. Asha (360 N) sits ? m from the pivot on one side; Meena (360 N) sits 3 m from the pivot on the other side. What is the missing distance in metres?
21. 21.True or false: to use a new load each time is poor testing. (a) False (b) True
22. 22.What does the team leader do? (a) checks the goals are met (b) keeps the team on track (c) runs the tests (d) puts the model together
23. 23.📐 A model car is drawn so that 1 cm stands for 20 cm. The car is 8 cm long in the drawing. How long is the real car, in centimetres?
24. 24.🤝 In a design team, who tracks what is used up? (a) team leader (b) tester (c) builder (d) materials manager
25. 25.💪 Two children push a box to the right, one with 35 N and the other with 75 N. What is the net (total) force on the box, in newtons?
26. 26.🛠️ What does an engineer do before building anything? (a) paints the model (b) buys every material (c) builds at once (d) understands the problem
27. 27.⚙️ How many simple machines are there in the usual list? (a) 3 (b) 10 (c) 6 (d) 12
28. 28.♻️ Reduce, reuse or recycle: melt cans into new cans? (a) reuse (b) reduce (c) recycle
29. 29.True or false: a fixed pulley only changes direction. (a) False (b) True
30. 30.📋 For a model bridge challenge, is “roll at least 2 metres” a constraint or a criterion? (a) a criterion (b) a constraint
31. 31.📐 A beam is 950 cm long. How long is it in metres? =
32. 32.True or false: a movable pulley is on a flagpole top. (a) False (b) True
33. 33.🔍 Which is the odd one out? (a) a cloud (b) a ceiling fan (c) a seashell (d) a mountain
34. 34.♻️ A school bench is made from 300 recycled plastic bottles. How many benches can be made from 1200 bottles?
35. 35.🏋️ A force of 480 N pushes a cart 10 m along the floor. How much work is done, in joules?
36. 36.⚖️ A lever bar balances. The load is 150 N at 10 cm from the fulcrum. The effort is 50 N at ? cm from the fulcrum on the other side. What is the missing distance in centimetres?
37. 37.🪝 A well winch has a handle (wheel) of radius 28 cm turning an axle of radius 4 cm. What is its mechanical advantage (MA)?
38. 38.True or false: a tent guy rope is in compression (pushed). (a) False (b) True
39. 39.🔢 To follow the engineering design process, which comes first: “Plan” or “Ask”? (a) Ask (b) Plan
40. 40.📋 For a model bridge challenge, is “spend at most ₹100” a constraint or a criterion? (a) a criterion (b) a constraint

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