Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 159 · 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 wedge is … (a) two ramps back to back (b) a bar on a pivot (c) a rope on a wheel (d) a wheel on a rod
2. 2.🔍 Which is the odd one out? (a) cotton cloth (b) rubber (c) copper (d) plastic
3. 3.Which job does a computer engineer do? (a) designs bicycle gears (b) designs aeroplane wings (c) writes app software (d) wires a new building
4. 4.Which job does a mechanical engineer do? (a) designs factory machines (b) runs a fertiliser plant (c) keeps data safe online (d) designs artificial limbs
5. 5.⚖️ A lever balances when … (a) turning effects match (b) the bar is short (c) both weights are equal (d) the fulcrum moves
6. 6.True or false: a fixed pulley stays in one place. (a) False (b) True
7. 7.True or false: a seesaw is a lever. (a) False (b) True
8. 8.Which of these happens in the Improve step? (a) make it better, retest (b) draw a labelled diagram (c) check it against goals (d) list the materials
9. 9.True or false: to touch a hot glue tip is safe. (a) True (b) False
10. 10.What does the tester do? (a) writes down results (b) puts the model together (c) runs the tests (d) collects the supplies
11. 11.⚙️ Which simple machine is a screw jack? (a) pulley (b) screw (c) wheel and axle (d) lever
12. 12.💪 Which force pulls everything towards the Earth? (a) friction (b) wind (c) gravity (d) magnetism
13. 13.True or false: “a curve under the deck” is a suspension bridge. (a) True (b) False
14. 14.⚖️ To lift a heavy rock with a crowbar more easily, push … (a) near the fulcrum (b) on the rock (c) on the fulcrum (d) far from the fulcrum
15. 15.📋 For a model bridge challenge, is “spend at most ₹100” a constraint or a criterion? (a) a criterion (b) a constraint
16. 16.⚙️ Which simple machine is a knife edge? (a) lever (b) inclined plane (c) wedge (d) wheel and axle
17. 17.📐 A beam is 890 cm long. How long is it in metres? =
18. 18.💪 A cart is pulled to the right with 80 N and to the left with 90 N. Which way does the net force act? (a) to the left (b) no net force (c) to the right
19. 19.⚖️ Along a straight bar, measured from the left end, the effort is at 40 cm, the fulcrum at 60 cm and the load at 0 cm. Which class of lever is it? (a) class 3 (b) class 1 (c) class 2
20. 20.True or false: “roll at least 2 metres” is a constraint (a limit). (a) True (b) False
21. 21.🔄 Which design-process step is it to find the limits? (a) Imagine (b) Ask (c) Test (d) Improve
22. 22.⚖️ A seesaw balances. Asha (200 N) sits ? m from the pivot on one side; Kabir (400 N) sits 1 m from the pivot on the other side. What is the missing distance in metres?
23. 23.🏋️ A force of 100 N pushes a cart 3 m along the floor. How much work is done, in joules?
24. 24.🌉 A beam bridge is 135 m long. Piers split it into equal spans of 45 m. How many spans are there?
25. 25.🌉 What holds up a long beam bridge in the middle? (a) balloons (b) cables only (c) nothing (d) piers
26. 26.🔍 Which is the odd one out? (a) a window blind cord (b) a well-bucket rope wheel (c) a screw jack (d) a crane hook block
27. 27.♻️ Is sunlight a renewable or a non-renewable energy source? (a) renewable (b) non-renewable
28. 28.True or false: pulling a cart is a push. (a) False (b) True
29. 29.⚖️ What is the pivot point of a lever called? (a) the fulcrum (b) the axle (c) the load (d) the effort
30. 30.🏚️ Why are flexible joints good in an earthquake? (a) they are cheap (b) they stop shaking (c) they bend, not break (d) they look nice
31. 31.🛠️ Is a bicycle made by engineers or found in nature? (a) made by engineers (b) found in nature
32. 32.🛞 More or less friction: oil on a squeaky hinge? (a) more friction (b) less friction
33. 33.Which of these is an arch bridge? (a) the longest spans of all (b) stones squeezed together (c) a log across a stream (d) tall towers hold cables
34. 34.Which of these is a beam bridge? (a) a flat deck on piers (b) a rope bridge in hills (c) stones squeezed together (d) cables tied down at ends
35. 35.🪝 A bucket weighing 280 N is lifted with a single fixed pulley at the top of a well. What effort is needed, in newtons? (ideal pulley, no friction)
36. 36.⚖️ A seesaw balances. Asha (520 N) sits 4 m from the pivot on one side; Kabir (? N) sits 4 m from the pivot on the other side. What is the missing weight in newtons?
37. 37.📐 On a plan, 1 cm stands for 10 m. A real bridge is 160 m long. How long is it on the plan, in centimetres?
38. 38.🏋️ A force of 320 N pushes a cart 10 m along the floor. How much work is done, in joules?
39. 39.Which of these needs a flexible material? (a) a boat hull (b) a tea flask lining (c) a magnifier lens (d) a skipping rope
40. 40.♻️ Reduce, reuse or recycle: give old books away? (a) reduce (b) recycle (c) reuse

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