Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 944 · 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.💪 Two equal forces push on a box from opposite sides. They are … (a) gravity (b) balanced (c) doubled (d) unbalanced
2. 2.🦺 In the workshop, is it safe to use a cracked tool? (a) not safe (b) safe
3. 3.True or false: the tip of a nail is a wedge. (a) True (b) False
4. 4.True or false: a mobile phone is found in nature. (a) False (b) True
5. 5.🔺 Which strong shape does a lintel over a door use? (a) arch (b) dome (c) beam (d) triangle
6. 6.♻️ Is biogas from waste a renewable or a non-renewable energy source? (a) renewable (b) non-renewable
7. 7.⚖️ A seesaw balances. Ravi (? N) sits 2 m from the pivot on one side; Kabir (240 N) sits 3 m from the pivot on the other side. What is the missing weight in newtons?
8. 8.🧪 A paper bridge was tested three times. It held 330 g, 130 g and 230 g. What is the mean (average) load it held, in grams?
9. 9.🏋️ A force of 110 N pushes a cart 7 m along the floor. How much work is done, in joules?
10. 10.Which job does a civil engineer do? (a) designs hearing aids (b) makes medicines in bulk (c) designs a metro tunnel (d) designs a paint factory
11. 11.Which of these is reuse (use again)? (a) reuse gift paper (b) print on both sides (c) pulp old paper (d) carry a cloth bag
12. 12.🛠️ People need to make water safe to drink. Which invention helps? (a) a water filter (b) a tunnel (c) a lift (d) a bridge
13. 13.True or false: “spend at most ₹100” is a constraint (a limit). (a) True (b) False
14. 14.🦺 What protects your eyes when sawing or drilling? (a) sunglasses (b) a cap (c) nothing (d) safety goggles
15. 15.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) read the challenge rules (c) strengthen the weak part (d) build it with straws
16. 16.🧪 What is a prototype? (a) a broken part (b) an early test model (c) the final product (d) a sales poster
17. 17.Which of these is a pulley? (a) a wood screw (b) a water tap handle (c) a seesaw (d) a flagpole rope wheel
18. 18.True or false: a curved stone doorway uses triangles. (a) True (b) False
19. 19.📐 Why do engineers use scale drawings? (a) to hide sizes (b) to make them pretty (c) to save ink only (d) big things fit on paper
20. 20.🏋️ An 18 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
21. 21.🏚️ Does building tall and narrow make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
22. 22.True or false: “tall towers hold cables” is a beam bridge. (a) False (b) True
23. 23.🏋️ A force of 490 N pushes a cart 1 m along the floor. How much work is done, in joules?
24. 24.⚖️ On a seesaw, a heavier child should sit … (a) farther from the pivot (b) on the pivot (c) anywhere (d) closer to the pivot
25. 25.True or false: a fixed pulley makes you pull 2× rope. (a) True (b) False
26. 26.Which of these makes a building safer in earthquakes? (a) using a heavy roof (b) building tall and narrow (c) raising heavy tanks high (d) having a wide base
27. 27.🏋️ A 16 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
28. 28.♻️ Reduce, reuse or recycle: melt cans into new cans? (a) recycle (b) reuse (c) reduce
29. 29.🪝 A pulley system has 1 rope section holding up the load. To lift the load by 6 m, how many metres of rope must you pull?
30. 30.Which of these needs a heat insulator? (a) a hair band (b) a skipping rope (c) a car seat belt (d) a tea flask lining
31. 31.Which job is a spirit level for? (a) check a shelf is level (b) drive in a nail (c) measure a long length (d) make a hole in wood
32. 32.🏋️ A force of 340 N did 1700 J of work. How many metres did the object move?
33. 33.Which of these is reduce (use less)? (a) give old books away (b) turn plastic into tiles (c) use a jar as a pen stand (d) buy less packaging
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 280 g and design C held 230 g. Which design was the weakest? (a) design B (b) design A (c) design C
35. 35.🔍 Which is the odd one out? (a) change lots at once (b) guess, do not measure (c) repeat each test (d) skip writing results
36. 36.🤝 A team of 4 shares 20 equal jobs fairly. Each job takes 5 minutes. How many minutes does each person work?
37. 37.📋 Criterion: the model bridge must hold at least 900 g. In the test it held 800 g. Does it meet the criterion? (a) No (b) Yes
38. 38.♻️ A school bench is made from 300 recycled plastic bottles. How many benches can be made from 600 bottles?
39. 39.Which of these is in tension (pulled)? (a) a stone in an arch (b) a bridge pier (c) a brick at a wall base (d) a stretched rubber band
40. 40.🤝 Why do engineers work in teams? (a) many skills and ideas (b) to work alone (c) to finish nothing (d) to argue more

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