Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 465 · 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 load of 270 N hangs from a pulley system in which 3 rope sections hold up the load. What effort is needed, in newtons? (ideal pulleys)
2. 2.True or false: a movable pulley is on a flagpole top. (a) True (b) False
3. 3.🧑‍🔧 Which kind of engineer designs electric motors? (a) computer (b) chemical (c) electrical (d) biomedical
4. 4.📐 Why do engineers use scale drawings? (a) to hide sizes (b) to make them pretty (c) to save ink only (d) big things fit on paper
5. 5.🔧 Which tool would you use to make a hole in wood? (a) a spanner (b) a screwdriver (c) a hand drill (d) a hammer
6. 6.💪 Which force pulls everything towards the Earth? (a) friction (b) wind (c) magnetism (d) gravity
7. 7.Which of these is made by engineers? (a) a waterfall (b) a seashell (c) a banyan tree (d) a mobile phone
8. 8.Which of these makes a building less safe in earthquakes? (a) adding steel to concrete (b) using flexible joints (c) building tall and narrow (d) keeping a simple shape
9. 9.🦺 Who should use hot glue guns and power tools in a kids’ project? (a) the youngest child (b) an adult (c) any child alone (d) a stranger
10. 10.🏋️ A force of 360 N did 1440 J of work. How many metres did the object move?
11. 11.True or false: “finish in 40 minutes” is a constraint (a limit). (a) False (b) True
12. 12.Which of these makes a building safer in earthquakes? (a) leaving out steel bars (b) building tall and narrow (c) keeping a simple shape (d) using a heavy roof
13. 13.Which of these is a wheel and axle? (a) a wheelchair ramp (b) a seesaw (c) a well-bucket rope wheel (d) a round doorknob
14. 14.🪝 What does a single fixed pulley change? (a) the direction of pull (b) the colour of rope (c) gravity (d) the size of the load
15. 15.🔍 Which is the odd one out? (a) adding steel to concrete (b) having a wide base (c) adding cross bracing (d) leaving out steel bars
16. 16.🪝 A well winch has a handle (wheel) of radius 2 cm turning an axle of radius 1 cm. What is its mechanical advantage (MA)?
17. 17.🏋️ In which unit is work measured? (a) watt hour (b) metre (m) (c) joule (J) (d) newton (N)
18. 18.🤝 Is it good or poor teamwork to own up to a mistake? (a) good teamwork (b) poor teamwork
19. 19.🦺 In the workshop, is it safe to wear safety goggles? (a) not safe (b) safe
20. 20.🪝 More rope sections holding a load means … (a) the load floats (b) more effort needed (c) less effort needed (d) no change
21. 21.🏚️ Three solid model towers are made of the same material. Tower A is 10 cm tall on a 10 cm wide base, tower B is 120 cm tall on a 30 cm base and tower C is 60 cm tall on a 30 cm base. Which is the hardest to tip over? (a) tower B (b) tower C (c) tower A
22. 22.⚖️ Along a straight bar, measured from the left end, the effort is at 40 cm, the fulcrum at 30 cm and the load at 80 cm. Which class of lever is it? (a) class 3 (b) class 1 (c) class 2
23. 23.⚖️ A lever bar balances. The load is ? N at 50 cm from the fulcrum. The effort is 250 N at 30 cm from the fulcrum on the other side. What is the missing force in newtons?
24. 24.Which of these uses an arch? (a) a lintel over a door (b) an igloo (c) an old stone bridge (d) a bicycle frame
25. 25.🔍 Which is the odd one out? (a) use a cracked tool (b) leave tools on the floor (c) wear safety goggles (d) touch a hot glue tip
26. 26.💪 A box weighs 150 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
27. 27.🧱 Which material is best for a window pane? (a) wood (b) steel (c) glass (d) brick
28. 28.📐 How many centimetres are in 1 metre? (a) 1000 (b) 10 (c) 60 (d) 100
29. 29.True or false: pressing a doorbell is a push. (a) False (b) True
30. 30.🪝 A load of 90 N hangs from a pulley system in which 3 rope sections hold up the load. What effort is needed, in newtons? (ideal pulleys)
31. 31.Which of these uses triangles? (a) a slab over a canal (b) a crane arm (c) an igloo (d) an old stone bridge
32. 32.📋 For a model bridge challenge, is “float for 1 minute” a constraint or a criterion? (a) a constraint (b) a criterion
33. 33.♻️ A project report has 60 pages. How many sheets of paper are needed if it is printed on both sides of each sheet?
34. 34.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “build it with straws”? (a) build it with straws (b) sketch three ideas
35. 35.True or false: a computer engineer writes app software. (a) False (b) True
36. 36.Which of these is a beam bridge? (a) a rope bridge in hills (b) the simplest bridge (c) pushes out on its ends (d) stones squeezed together
37. 37.💪 A cart is pulled to the right with 60 N and to the left with 45 N. Which way does the net force act? (a) no net force (b) to the left (c) to the right
38. 38.🔍 Which is the odd one out? (a) finish in 40 minutes (b) be under 30 cm tall (c) spend at most ₹100 (d) float for 1 minute
39. 39.🧱 Which material is best for a raincoat? (a) paper (b) plastic-coated cloth (c) cardboard (d) cotton wool
40. 40.🏋️ A 9 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?

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