Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 356 · 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 solid model towers are made of the same material. Tower A is 40 cm tall on a 10 cm wide base, tower B is 60 cm tall on a 10 cm base and tower C is 150 cm tall on a 30 cm base. Which is the easiest to tip over? (a) tower B (b) tower C (c) tower A
2. 2.True or false: a bridge helps people cross a wide river. (a) False (b) True
3. 3.⚖️ Which class of lever is a lemon squeezer? (a) class 3 (b) class 1 (c) class 2
4. 4.📐 A beam is 750 cm long. How long is it in metres? =
5. 5.📋 For a model bridge challenge, is “spend at most ₹100” a constraint or a criterion? (a) a constraint (b) a criterion
6. 6.📋 For a model bridge challenge, is “lift a cup of water” a constraint or a criterion? (a) a criterion (b) a constraint
7. 7.📋 Criterion: the model bridge must hold at least 500 g. In the test it held 550 g. Does it meet the criterion? (a) No (b) Yes
8. 8.Which need does a dam meet? (a) make water safe to drink (b) keep food fresh longer (c) store water for summer (d) reach a top floor fast
9. 9.💪 Two children push a box to the right, one with 50 N and the other with 45 N. What is the net (total) force on the box, in newtons?
10. 10.⚖️ A lever balances when … (a) the fulcrum moves (b) both weights are equal (c) the bar is short (d) turning effects match
11. 11.True or false: a movable pulley stays in one place. (a) False (b) True
12. 12.🤝 In a design team, who checks the goals are met? (a) team leader (b) recorder (c) materials manager (d) tester
13. 13.🤝 Is it good or poor teamwork to share the work fairly? (a) good teamwork (b) poor teamwork
14. 14.Which job does a mechanical engineer do? (a) designs artificial limbs (b) designs hearing aids (c) lays out a highway (d) designs bicycle gears
15. 15.📐 On a plan, 1 cm stands for 10 m. A wall is 12 cm long on the plan. How long is the real wall, in metres?
16. 16.True or false: a mechanical engineer designs car engines. (a) True (b) False
17. 17.🛞 More or less friction: skating on ice? (a) more friction (b) less friction
18. 18.True or false: a pair of pliers is a class 3 lever (effort in the middle). (a) False (b) True
19. 19.⚖️ A seesaw balances. Meena (340 N) sits ? m from the pivot on one side; Arjun (170 N) sits 2 m from the pivot on the other side. What is the missing distance in metres?
20. 20.Which of these is made by engineers? (a) a river (b) a seashell (c) a cloud (d) a lift
21. 21.True or false: a flagpole rope wheel is a lever. (a) True (b) False
22. 22.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
23. 23.🏚️ Does stacking loose bricks make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
24. 24.🤝 A team of 2 shares 6 equal jobs fairly. Each job takes 7 minutes. How many minutes does each person work?
25. 25.🧑‍🔧 Which kind of engineer builds a website? (a) mechanical (b) computer (c) biomedical (d) electrical
26. 26.True or false: to measure its performance is the Imagine step. (a) False (b) True
27. 27.🔺 Which strong shape does a curved stone doorway use? (a) triangle (b) dome (c) beam (d) arch
28. 28.⚖️ A lever bar balances. The load is 360 N at 50 cm from the fulcrum. The effort is 300 N at ? cm from the fulcrum on the other side. What is the missing distance in centimetres?
29. 29.🪝 Fixed or movable pulley: which one stays in one place? (a) a movable pulley (b) a fixed pulley
30. 30.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
31. 31.⚖️ Which class of lever is a pair of scissors? (a) class 2 (b) class 3 (c) class 1
32. 32.⚖️ Along a straight bar, measured from the left end, the effort is at 10 cm, the fulcrum at 0 cm and the load at 20 cm. Which class of lever is it? (a) class 3 (b) class 2 (c) class 1
33. 33.⚖️ Going along a lever from one end to the other, the order is: effort, fulcrum, load. Which class of lever is it? (a) class 3 (b) class 2 (c) class 1
34. 34.Which of these makes a building safer in earthquakes? (a) stacking loose bricks (b) having a wide base (c) using a heavy roof (d) raising heavy tanks high
35. 35.Which of these makes a building less safe in earthquakes? (a) having a wide base (b) adding steel to concrete (c) fitting rubber base pads (d) leaving out steel bars
36. 36.🏚️ Does building tall and narrow make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
37. 37.💪 A force is a … (a) unit of time (b) push or a pull (c) kind of colour (d) type of sound
38. 38.True or false: to repeat each test is good testing. (a) False (b) True
39. 39.📐 A beam is 790 cm long. How long is it in metres? =
40. 40.⚖️ Which class of lever is a bottle opener? (a) class 3 (b) class 2 (c) class 1

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