Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 14 · 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.💪 In which unit do we measure force? (a) newton (N) (b) metre (m) (c) second (s) (d) litre (L)
2. 2.🪢 A concrete slab weighing 2400 N rests evenly on 3 identical pillars. What compression force does each pillar carry, in newtons?
3. 3.🌉 Which bridge type: “good for short gaps”? (a) suspension bridge (b) beam bridge (c) arch bridge
4. 4.🪝 A wheel and axle is a big wheel fixed to … (a) a flat ramp (b) a smaller rod (axle) (c) a sharp wedge (d) a loose rope
5. 5.🏋️ Can a simple machine reduce the work done? (a) yes, always (b) yes, by half (c) no, work stays the same (d) only on Mondays
6. 6.♻️ Reduce, reuse or recycle: switch off unused lights? (a) recycle (b) reduce (c) reuse
7. 7.🏋️ A force of 400 N did 2800 J of work. How many metres did the object move?
8. 8.🏋️ A smooth ramp is 18 m long and rises 3 m. What effort pushes a 2400 N box up it, in newtons? (ideal ramp, no friction)
9. 9.⚖️ In a class 3 lever, what is in the middle? (a) the fulcrum (b) the pulley (c) the effort (d) the load
10. 10.♻️ Reduce, reuse or recycle: buy less packaging? (a) reduce (b) reuse (c) recycle
11. 11.🏋️ A 14 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
12. 12.🔄 Which design-process step is it to define the problem? (a) Plan (b) Imagine (c) Improve (d) Ask
13. 13.Which of these is found in nature? (a) a lift (b) a rainbow (c) a bicycle (d) a railway track
14. 14.True or false: a civil engineer designs a flyover. (a) True (b) False
15. 15.🔺 Why can an arch carry heavy loads? (a) it is very light (b) it bends easily (c) it is hollow (d) it works in compression
16. 16.⚖️ A lever balances when … (a) the bar is short (b) both weights are equal (c) the fulcrum moves (d) turning effects match
17. 17.Which of these is recycle (make new things)? (a) fix a dripping tap (b) use a jar as a pen stand (c) melt cans into new cans (d) refill a water bottle
18. 18.True or false: to smooth a rough edge, use a spirit level. (a) True (b) False
19. 19.🪢 Compression is a force that … (a) pushes or squeezes (b) makes light (c) pulls or stretches (d) cools things
20. 20.🧱 Which property matters most for a window pane? (a) flexible (b) electrical conductor (c) transparent (d) waterproof
21. 21.What does the team leader do? (a) writes down results (b) tracks what is used up (c) collects the supplies (d) shares out the jobs
22. 22.💪 Two children push a box to the right, one with 100 N and the other with 50 N. What is the net (total) force on the box, in newtons?
23. 23.⚖️ A seesaw balances. Zoya (680 N) sits ? m from the pivot on one side; Meena (680 N) sits 4 m from the pivot on the other side. What is the missing distance in metres?
24. 24.True or false: “spend at most ₹100” is a criterion (a goal). (a) True (b) False
25. 25.True or false: a crowbar is a wheel and axle. (a) True (b) False
26. 26.True or false: a biomedical engineer builds rockets. (a) False (b) True
27. 27.Which of these makes a building safer in earthquakes? (a) adding cross bracing (b) building tall and narrow (c) raising heavy tanks high (d) using a heavy roof
28. 28.🦺 In the workshop, is it safe to cut towards your hand? (a) not safe (b) safe
29. 29.🪝 What does a single fixed pulley change? (a) gravity (b) the colour of rope (c) the direction of pull (d) the size of the load
30. 30.🌉 In a stone arch bridge, the stones are in … (a) friction (b) no force (c) compression (d) tension
31. 31.True or false: to let adults use hot glue is not safe. (a) False (b) True
32. 32.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) strengthen the weak part (b) sketch three ideas (c) read the challenge rules (d) load it with coins
33. 33.🏋️ Pushing a crate 4 m took 1440 J of work. What force was used, in newtons?
34. 34.🛞 How can we reduce friction in a machine? (a) make parts rough (b) press parts harder (c) add sand (d) oil the moving parts
35. 35.⚖️ Turning effect = force × … (a) distance from fulcrum (b) mass of fulcrum (c) colour of bar (d) time taken
36. 36.True or false: an axe blade is a wedge. (a) True (b) False
37. 37.🌉 A beam bridge is 175 m long. Piers split it into equal spans of 25 m. How many spans are there?
38. 38.📋 A constraint is … (a) a kind of glue (b) a final test (c) a goal for success (d) a limit you must keep to
39. 39.📐 On a plan, 1 cm stands for 20 m. A real bridge is 40 m long. How long is it on the plan, in centimetres?
40. 40.🌉 A beam bridge 495 m long is split by piers into 11 equal spans. How long is each span, in metres?

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