Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 392 · 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: an aerospace engineer keeps data safe online. (a) True (b) False
2. 2.🔍 Which is the odd one out? (a) use a cracked tool (b) carry scissors closed (c) play near a moving drill (d) cut towards your hand
3. 3.🪝 Fixed or movable pulley: which one stays in one place? (a) a movable pulley (b) a fixed pulley
4. 4.Which of these is recycle (make new things)? (a) melt cans into new cans (b) carry a cloth bag (c) buy less packaging (d) print on both sides
5. 5.Which of these is recycle (make new things)? (a) reuse gift paper (b) refill a water bottle (c) use a jar as a pen stand (d) melt glass into new jars
6. 6.🔍 Which is the odd one out? (a) a rough doormat (b) a box pushed on carpet (c) skating on ice (d) chalk on a gym bar
7. 7.True or false: a chemical engineer makes medicines in bulk. (a) True (b) False
8. 8.⚖️ Which class of lever is a bottle opener? (a) class 2 (b) class 1 (c) class 3
9. 9.🛠️ Is a mobile phone made by engineers or found in nature? (a) found in nature (b) made by engineers
10. 10.⚖️ A seesaw balances. Ravi (140 N) sits 2 m from the pivot on one side; Zoya (? N) sits 1 m from the pivot on the other side. What is the missing weight in newtons?
11. 11.True or false: a bridge helps people make power from sunlight. (a) False (b) True
12. 12.📐 A beam is 490 cm long. How long is it in metres? =
13. 13.🔍 Which is the odd one out? (a) use at most 20 straws (b) spend at most ₹100 (c) finish in 40 minutes (d) roll at least 2 metres
14. 14.♻️ Reduce, reuse or recycle: give old books away? (a) reuse (b) reduce (c) recycle
15. 15.💪 Two children push a box to the right, one with 10 N and the other with 15 N. What is the net (total) force on the box, in newtons?
16. 16.⚙️ Which simple machine is a seesaw? (a) wedge (b) lever (c) wheel and axle (d) pulley
17. 17.🪢 A concrete slab weighing 14400 N rests evenly on 8 identical pillars. What compression force does each pillar carry, in newtons?
18. 18.🛞 Is friction helpful or a problem here: striking a matchstick? (a) a problem (b) helpful
19. 19.🏋️ A force of 480 N pushes a cart 2 m along the floor. How much work is done, in joules?
20. 20.📋 Your team’s budget is ₹68. You must buy one roll of tape for ₹15. Straws cost ₹2 each. What is the greatest number of straws you can buy?
21. 21.🔺 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?
22. 22.Which of these is made by engineers? (a) a mountain (b) a river (c) a volcano (d) a lift
23. 23.♻️ A family used to throw away 9 plastic bags a week. They now carry cloth bags. How many plastic bags do they save in 12 weeks?
24. 24.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “choose and draw one”? (a) build it with straws (b) choose and draw one
25. 25.🏋️ Pushing a crate 6 m took 2580 J of work. What force was used, in newtons?
26. 26.🔍 Which is the odd one out? (a) chalk on a gym bar (b) oil on a squeaky hinge (c) a rough doormat (d) a box pushed on carpet
27. 27.🛞 More or less friction: chalk on a gym bar? (a) less friction (b) more friction
28. 28.Which of these is caused by friction? (a) a magnet picks up pins (b) a compass needle turns (c) shoes grip the floor (d) a thrown ball comes down
29. 29.📋 Criterion: the model bridge must hold at least 200 g. In the test it held 50 g. Does it meet the criterion? (a) Yes (b) No
30. 30.🤝 A team of 3 shares 6 equal jobs fairly. Each job takes 3 minutes. How many minutes does each person work?
31. 31.📋 Constraint: the tower must be no taller than 80 cm. The team’s tower is 80 cm tall. Is it within the constraint? (a) No (b) Yes
32. 32.True or false: a round palace roof uses a dome. (a) False (b) True
33. 33.🔍 Which is the odd one out? (a) powder on a carrom board (b) skating on ice (c) oil on a squeaky hinge (d) a rough doormat
34. 34.⚖️ On a seesaw, a heavier child should sit … (a) farther from the pivot (b) anywhere (c) closer to the pivot (d) on the pivot
35. 35.True or false: to share the work fairly is poor teamwork. (a) True (b) False
36. 36.Which of these uses triangles? (a) a plank over a drain (b) a fort gateway (c) a bicycle frame (d) a lintel over a door
37. 37.🏚️ Why are flexible joints good in an earthquake? (a) they stop shaking (b) they look nice (c) they bend, not break (d) they are cheap
38. 38.True or false: pressing a doorbell is a pull. (a) False (b) True
39. 39.🏋️ Mechanical advantage (MA) = … (a) effort ÷ load (b) load × effort (c) load + effort (d) load ÷ effort
40. 40.True or false: a chisel is a wedge. (a) True (b) False

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