Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 368 · 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.Which job does a chemical engineer do? (a) plans a power grid (b) runs a fertiliser plant (c) builds rockets (d) designs a flyover
2. 2.📐 How many metres are in 1 kilometre? (a) 10 (b) 10000 (c) 1000 (d) 100
3. 3.🤝 Is it good or poor teamwork to give kind feedback? (a) poor teamwork (b) good teamwork
4. 4.⚖️ A lever bar balances. The load is 160 N at 30 cm from the fulcrum. The effort is 120 N at ? cm from the fulcrum on the other side. What is the missing distance in centimetres?
5. 5.True or false: pulling up your socks is a push. (a) False (b) True
6. 6.🧑‍🔧 Which branch of engineering works on aeroplanes and rockets? (a) chemical (b) computer (c) civil (d) aerospace
7. 7.True or false: “hold up 500 g” is a constraint (a limit). (a) False (b) True
8. 8.📋 For a model bridge challenge, is “spend at most ₹100” a constraint or a criterion? (a) a constraint (b) a criterion
9. 9.📐 How many millimetres are in 1 centimetre? (a) 5 (b) 100 (c) 10 (d) 1000
10. 10.⚙️ Which simple machine is a playground slide? (a) lever (b) screw (c) pulley (d) inclined plane
11. 11.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “choose and draw one”? (a) choose and draw one (b) load it with coins
12. 12.True or false: a nut and bolt is a screw. (a) False (b) True
13. 13.🔍 Which is the odd one out? (a) a flagpole rope wheel (b) a window blind cord (c) a well-bucket rope wheel (d) a playground slide
14. 14.Which of these is reduce (use less)? (a) print on both sides (b) plant in old tyres (c) pulp old paper (d) melt glass into new jars
15. 15.📋 Constraint: the tower must be no taller than 40 cm. The team’s tower is 34 cm tall. Is it within the constraint? (a) No (b) Yes
16. 16.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a wooden plank 7 N, sandpaper 10 N, ice 2 N, a glass sheet 4 N. Which surface gave the most friction? (a) a wooden plank (b) a glass sheet (c) ice (d) sandpaper
17. 17.💪 A bag has a mass of 45 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
18. 18.⚖️ 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 1 (c) class 2
19. 19.🪢 A concrete slab weighing 7800 N rests evenly on 3 identical pillars. What compression force does each pillar carry, in newtons?
20. 20.💪 A box weighs 450 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
21. 21.Which of these happens in the Improve step? (a) redesign after testing (b) make a prototype (c) build the model (d) find the limits
22. 22.🔍 Which is the odd one out? (a) a volcano (b) a mountain (c) a cloud (d) a mobile phone
23. 23.🪢 Which material is good in tension but useless in compression? (a) a brick (b) a concrete block (c) a rope (d) a stone
24. 24.🪝 Fixed or movable pulley: which one is on a flagpole top? (a) a movable pulley (b) a fixed pulley
25. 25.Which of these is in tension (pulled)? (a) a brick at a wall base (b) a bridge pier (c) a squeezed spring (d) a tent guy rope
26. 26.🛞 Which surface gives the MOST friction to a sliding block? (a) ice (b) glass (c) sandpaper (d) polished marble
27. 27.♻️ Is diesel a renewable or a non-renewable energy source? (a) renewable (b) non-renewable
28. 28.🧪 Why repeat a test three times? (a) to get reliable results (b) it looks busy (c) to use more paper (d) the first is wrong
29. 29.Which of these uses triangles? (a) a fort gateway (b) an igloo (c) a planetarium roof (d) a truss bridge side
30. 30.True or false: a flagpole rope wheel is a lever. (a) False (b) True
31. 31.True or false: a fixed pulley needs effort = load. (a) True (b) False
32. 32.♻️ Which energy source will never run out? (a) petrol (b) coal (c) diesel (d) sunlight
33. 33.🔍 Which is the odd one out? (a) plastic (b) steel (c) graphite (d) copper
34. 34.🏚️ Does leaving out steel bars make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
35. 35.True or false: to ask who will use it is the Imagine step. (a) False (b) True
36. 36.🪝 A pulley system lifts a 510 N load with an effort of 170 N. What is its mechanical advantage (MA)?
37. 37.🔍 Which is the odd one out? (a) glass (b) clay pottery (c) plastic (d) graphite
38. 38.🔍 Which is the odd one out? (a) fit on a school desk (b) stand in a fan breeze (c) finish in 40 minutes (d) use at most 20 straws
39. 39.📐 A beam is 540 cm long. How long is it in metres? =
40. 40.True or false: a biomedical engineer designs knee implants. (a) True (b) False

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