Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 755 · 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.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 240 g and design C held 290 g. Which design was the strongest? (a) design B (b) design C (c) design A
2. 2.Which of these is an inclined plane? (a) a playground slide (b) a window blind cord (c) a seesaw (d) a nutcracker
3. 3.🔍 Which is the odd one out? (a) adding cross bracing (b) stacking loose bricks (c) having a wide base (d) using flexible joints
4. 4.True or false: to check it against goals is the Imagine step. (a) True (b) False
5. 5.True or false: a pair of scissors is a class 2 lever (load in the middle). (a) False (b) True
6. 6.🌉 A beam bridge 60 m long rests on the two river banks and on piers in between, making equal spans of 10 m. How many piers are there?
7. 7.🔍 Which is the odd one out? (a) a mobile phone (b) a bridge (c) a lift (d) a banyan tree
8. 8.⚖️ On a seesaw, a heavier child should sit … (a) anywhere (b) closer to the pivot (c) on the pivot (d) farther from the pivot
9. 9.🧱 Is cotton cloth an electrical conductor or an insulator? (a) an insulator (b) a conductor
10. 10.🪝 A pulley system has 3 rope sections holding up the load. To lift the load by 7 m, how many metres of rope must you pull?
11. 11.📋 A constraint is … (a) a final test (b) a goal for success (c) a kind of glue (d) a limit you must keep to
12. 12.⚖️ A lever balances when … (a) both weights are equal (b) the bar is short (c) the fulcrum moves (d) turning effects match
13. 13.📋 Constraint: the tower must be no taller than 30 cm. The team’s tower is 24 cm tall. Is it within the constraint? (a) No (b) Yes
14. 14.True or false: to ask who will use it is the Ask step. (a) False (b) True
15. 15.🌉 A beam bridge 350 m long is split by piers into 10 equal spans. How long is each span, in metres?
16. 16.What does the recorder do? (a) collects the supplies (b) runs the tests (c) keeps the design notes (d) tracks what is used up
17. 17.🏋️ Can a simple machine reduce the work done? (a) only on Mondays (b) no, work stays the same (c) yes, by half (d) yes, always
18. 18.🪝 A bucket weighing 330 N is lifted with a single fixed pulley at the top of a well. What effort is needed, in newtons? (ideal pulley, no friction)
19. 19.🌉 In a suspension bridge, the main cables are in … (a) friction (b) no force (c) compression (d) tension
20. 20.⚖️ Turning effect = force × … (a) time taken (b) mass of fulcrum (c) distance from fulcrum (d) colour of bar
21. 21.🪝 Fixed or movable pulley: which one is on a flagpole top? (a) a fixed pulley (b) a movable pulley
22. 22.🏋️ A machine lifts a load of 720 N when you push with 120 N. What is its mechanical advantage (MA)?
23. 23.True or false: to check it against goals is the Test step. (a) True (b) False
24. 24.🪝 What does a single fixed pulley change? (a) gravity (b) the size of the load (c) the colour of rope (d) the direction of pull
25. 25.What does the builder do? (a) shares out the jobs (b) tracks what is used up (c) writes down results (d) cuts and joins parts
26. 26.⚖️ A seesaw balances. Arjun (390 N) sits 2 m from the pivot on one side; Kabir (? N) sits 3 m from the pivot on the other side. What is the missing weight in newtons?
27. 27.🛞 How can we reduce friction in a machine? (a) oil the moving parts (b) add sand (c) press parts harder (d) make parts rough
28. 28.📋 Your team’s budget is ₹62. You must buy one roll of tape for ₹15. Straws cost ₹2 each. What is the greatest number of straws you can buy?
29. 29.💪 A box weighs 260 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
30. 30.⚖️ Which class of lever is your forearm? (a) class 1 (b) class 2 (c) class 3
31. 31.📋 For a model bridge challenge, is “hold up 500 g” a constraint or a criterion? (a) a constraint (b) a criterion
32. 32.🛞 More or less friction: a smooth steel slide? (a) less friction (b) more friction
33. 33.🔍 Which is the odd one out? (a) a rough doormat (b) a wet tiled floor (c) sand on a slippery path (d) a grippy rubber sole
34. 34.💪 Is pulling a cart a push or a pull? (a) a push (b) a pull
35. 35.🪢 Compression is a force that … (a) cools things (b) makes light (c) pushes or squeezes (d) pulls or stretches
36. 36.🔢 To follow the engineering design process, what comes right after “Plan”? (a) Imagine (b) Ask (c) Test (d) Create
37. 37.🏋️ A smooth ramp is 12 m long and rises 2 m. What effort pushes a 600 N box up it, in newtons? (ideal ramp, no friction)
38. 38.🌉 Which bridge type: “a flat deck on piers”? (a) arch bridge (b) suspension bridge (c) beam bridge
39. 39.🏋️ A machine lifts a load of 330 N when you push with 110 N. What is its mechanical advantage (MA)?
40. 40.⚖️ Which class of lever is a pair of pliers? (a) class 1 (b) class 3 (c) class 2

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