Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 327 · 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 model car is drawn so that 1 cm stands for 10 cm. The car is 11 cm long in the drawing. How long is the real car, in centimetres?
2. 2.True or false: kicking a football is a push. (a) True (b) False
3. 3.♻️ Is flowing river water a renewable or a non-renewable energy source? (a) non-renewable (b) renewable
4. 4.True or false: ocean wave energy is a renewable energy source. (a) False (b) True
5. 5.Which need does a dam meet? (a) talk to someone far away (b) keep food fresh longer (c) store water for summer (d) go through a mountain
6. 6.⚖️ A seesaw balances. Kabir (170 N) sits 4 m from the pivot on one side; Arjun (680 N) sits ? m from the pivot on the other side. What is the missing distance in metres?
7. 7.🛠️ Is a railway track made by engineers or found in nature? (a) made by engineers (b) found in nature
8. 8.🌉 A beam bridge 120 m long rests on the two river banks and on piers in between, making equal spans of 40 m. How many piers are there?
9. 9.True or false: to cut a wooden plank, use sandpaper. (a) True (b) False
10. 10.True or false: to measure a long length, use a protractor. (a) True (b) False
11. 11.🏋️ Pushing a crate 3 m took 750 J of work. What force was used, in newtons?
12. 12.🏋️ A smooth ramp is 2 m long and rises 1 m. What effort pushes a 2000 N box up it, in newtons? (ideal ramp, no friction)
13. 13.⚖️ Along a straight bar, measured from the left end, the effort is at 30 cm, the fulcrum at 20 cm and the load at 50 cm. Which class of lever is it? (a) class 1 (b) class 3 (c) class 2
14. 14.📋 Your team’s budget is ₹31. You must buy one roll of tape for ₹20. Straws cost ₹2 each. What is the greatest number of straws you can buy?
15. 15.🛞 Friction acts … (a) with the motion (b) against the motion (c) only on ice (d) only upwards
16. 16.🔄 Which design-process step is it to check it against goals? (a) Create (b) Plan (c) Imagine (d) Test
17. 17.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to avoid testing (c) to decorate a room (d) to sell them at once
18. 18.📐 On a plan, 1 cm stands for 5 m. A real bridge is 25 m long. How long is it on the plan, in centimetres?
19. 19.🏚️ Does raising heavy tanks high make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
20. 20.Which of these happens in the Imagine step? (a) redesign after testing (b) measure its performance (c) think of wild ideas (d) make a prototype
21. 21.⚖️ A seesaw balances. Meena (180 N) sits 1 m from the pivot on one side; Zoya (? N) sits 1 m from the pivot on the other side. What is the missing weight in newtons?
22. 22.True or false: “keep ice for 1 hour” is a constraint (a limit). (a) False (b) True
23. 23.🧑‍🔧 Which branch of engineering designs machines with moving parts? (a) biomedical (b) chemical (c) civil (d) mechanical
24. 24.Which job does an electrical engineer do? (a) designs a flyover (b) designs a paint factory (c) plans a power grid (d) designs factory machines
25. 25.True or false: “cables tied down at ends” is a suspension bridge. (a) True (b) False
26. 26.⚖️ A seesaw balances. Meena (200 N) sits 3 m from the pivot on one side; Kabir (300 N) sits ? m from the pivot on the other side. What is the missing distance in metres?
27. 27.True or false: “a rope bridge in hills” is a suspension bridge. (a) False (b) True
28. 28.🛠️ Is a mobile phone made by engineers or found in nature? (a) found in nature (b) made by engineers
29. 29.⚖️ Along a straight bar, measured from the left end, the effort is at 30 cm, the fulcrum at 50 cm and the load at 40 cm. Which class of lever is it? (a) class 2 (b) class 1 (c) class 3
30. 30.🪝 A load of 720 N hangs from a pulley system in which 4 rope sections hold up the load. What effort is needed, in newtons? (ideal pulleys)
31. 31.⚖️ A lever bar balances. The load is ? N at 10 cm from the fulcrum. The effort is 100 N at 80 cm from the fulcrum on the other side. What is the missing force in newtons?
32. 32.True or false: your forearm is a class 1 lever (fulcrum in the middle). (a) True (b) False
33. 33.📋 For a model bridge challenge, is “use at most 20 straws” a constraint or a criterion? (a) a criterion (b) a constraint
34. 34.🔍 Which is the odd one out? (a) a window blind cord (b) a well-bucket rope wheel (c) a flagpole rope wheel (d) a screw jack
35. 35.🪢 A sign weighing 600 N hangs from 5 identical vertical ropes that share the load equally. What is the tension in each rope, in newtons?
36. 36.📐 A model car is drawn so that 1 cm stands for 20 cm. The car is 9 cm long in the drawing. How long is the real car, in centimetres?
37. 37.🏋️ Pushing a crate 9 m took 1350 J of work. What force was used, in newtons?
38. 38.📋 Constraint: the tower must be no taller than 70 cm. The team’s tower is 64 cm tall. Is it within the constraint? (a) No (b) Yes
39. 39.Which of these is a pulley? (a) a road up a hill (b) a nutcracker (c) an axe blade (d) a crane hook block
40. 40.True or false: a tow rope on a car is in tension (pulled). (a) False (b) True

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