Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 116 · 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 a tug of war, one team pulls right with 55 N and the other pulls left with 50 N. What is the size of the net force, in newtons?
2. 2.♻️ Reduce, reuse or recycle: carry a cloth bag? (a) reuse (b) reduce (c) recycle
3. 3.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “load it with coins”? (a) build it with straws (b) load it with coins
4. 4.♻️ Is biogas from waste a renewable or a non-renewable energy source? (a) non-renewable (b) renewable
5. 5.True or false: a telephone helps people make water safe to drink. (a) True (b) False
6. 6.🦺 In the workshop, is it safe to let adults use hot glue? (a) safe (b) not safe
7. 7.🔍 Which is the odd one out? (a) float for 1 minute (b) stand in a fan breeze (c) use at most 20 straws (d) carry 10 coins
8. 8.⚖️ On a seesaw, a heavier child should sit … (a) anywhere (b) closer to the pivot (c) farther from the pivot (d) on the pivot
9. 9.🪝 What does a single fixed pulley change? (a) the colour of rope (b) gravity (c) the direction of pull (d) the size of the load
10. 10.🔍 Which is the odd one out? (a) use the same load (b) record every result (c) hide a failed test (d) measure the same way
11. 11.True or false: “tall towers hold cables” is a suspension bridge. (a) False (b) True
12. 12.📋 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
13. 13.What does the recorder do? (a) puts the model together (b) writes down results (c) shares out the jobs (d) keeps the team on track
14. 14.True or false: a wheel on ball bearings gives more friction. (a) True (b) False
15. 15.🦺 How should you carry scissors? (a) while running (b) points down, closed (c) points up, open (d) by the blades
16. 16.True or false: a mechanical engineer designs a gearbox. (a) True (b) False
17. 17.⚖️ Turning effect = force × … (a) distance from fulcrum (b) mass of fulcrum (c) colour of bar (d) time taken
18. 18.Which of these is in tension (pulled)? (a) a swing chain (b) a pillar under a roof (c) a squeezed spring (d) a tall bridge tower
19. 19.Which job does an electrical engineer do? (a) designs artificial limbs (b) designs aeroplane wings (c) runs a fertiliser plant (d) designs power lines
20. 20.📐 A model car is drawn so that 1 cm stands for 30 cm. The car is 5 cm long in the drawing. How long is the real car, in centimetres?
21. 21.🛠️ People need to store water for summer. Which invention helps? (a) a solar panel (b) a dam (c) a train (d) a telephone
22. 22.🔺 How do engineers stop a square frame from wobbling? (a) make it bigger (b) add a diagonal brace (c) paint it (d) take off a side
23. 23.Which of these makes a building less safe in earthquakes? (a) using a light roof (b) adding cross bracing (c) making brittle joints (d) fitting rubber base pads
24. 24.⚖️ A lever bar balances. The load is 150 N at 40 cm from the fulcrum. The effort is 200 N at ? cm from the fulcrum on the other side. What is the missing distance in centimetres?
25. 25.🧑‍🔧 Which kind of engineer designs a metro tunnel? (a) electrical (b) biomedical (c) civil (d) mechanical
26. 26.🛠️ Is a cloud made by engineers or found in nature? (a) found in nature (b) made by engineers
27. 27.💪 A box weighs 450 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
28. 28.📋 For a model bridge challenge, is “use at most 20 straws” a constraint or a criterion? (a) a criterion (b) a constraint
29. 29.📋 For a model bridge challenge, is “carry 10 coins” a constraint or a criterion? (a) a criterion (b) a constraint
30. 30.True or false: “be under 30 cm tall” is a criterion (a goal). (a) True (b) False
31. 31.🧪 A paper bridge was tested three times. It held 230 g, 70 g and 210 g. What is the mean (average) load it held, in grams?
32. 32.Which of these needs a heat insulator? (a) a raincoat (b) a window pane (c) a tea flask lining (d) a boat hull
33. 33.True or false: to change lots at once is poor testing. (a) False (b) True
34. 34.♻️ Reduce, reuse or recycle: pulp old paper? (a) reduce (b) reuse (c) recycle
35. 35.🔍 Which is the odd one out? (a) spend at most ₹100 (b) fit on a school desk (c) use only paper and tape (d) lift a cup of water
36. 36.Which of these makes a building safer in earthquakes? (a) adding cross bracing (b) using a heavy roof (c) stacking loose bricks (d) leaving out steel bars
37. 37.🔢 To follow the engineering design process, which comes first: “Ask” or “Improve”? (a) Ask (b) Improve
38. 38.🏋️ A 13 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
39. 39.🪝 A pulley system lifts a 320 N load with an effort of 160 N. What is its mechanical advantage (MA)?
40. 40.🧪 Why repeat a test three times? (a) to get reliable results (b) it looks busy (c) the first is wrong (d) to use more paper

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