Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 728 · 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 beam is 520 cm long. How long is it in metres? =
2. 2.🏋️ A machine lifts a load of 120 N when you push with 60 N. What is its mechanical advantage (MA)?
3. 3.🛠️ Is a banyan tree made by engineers or found in nature? (a) found in nature (b) made by engineers
4. 4.🛞 Which surface gives the MOST friction to a sliding block? (a) sandpaper (b) polished marble (c) ice (d) glass
5. 5.🏚️ Three solid model towers are made of the same material. Tower A is 100 cm tall on a 20 cm wide base, tower B is 60 cm tall on a 20 cm base and tower C is 40 cm tall on a 40 cm base. Which is the easiest to tip over? (a) tower B (b) tower C (c) tower A
6. 6.♻️ A family used to throw away 7 plastic bags a week. They now carry cloth bags. How many plastic bags do they save in 10 weeks?
7. 7.True or false: a civil engineer designs a paint factory. (a) False (b) True
8. 8.🪝 What does a single fixed pulley change? (a) gravity (b) the direction of pull (c) the size of the load (d) the colour of rope
9. 9.♻️ A project report has 12 pages. How many sheets of paper are needed if it is printed on both sides of each sheet?
10. 10.🔺 A flat frame has 9 straight sides joined by loose pins at the corners. What is the least number of corner-to-corner braces needed to make it rigid?
11. 11.🪝 Fixed or movable pulley: which one needs effort = load? (a) a movable pulley (b) a fixed pulley
12. 12.True or false: to repeat each test is good testing. (a) True (b) False
13. 13.🦺 In the workshop, is it safe to cut away from your body? (a) safe (b) not safe
14. 14.🧑‍🔧 Which branch of engineering designs machines with moving parts? (a) chemical (b) mechanical (c) biomedical (d) civil
15. 15.🏋️ A force of 200 N pushes a cart 1 m along the floor. How much work is done, in joules?
16. 16.🔺 One side of a straw bridge is a row of 8 triangles standing point-up and point-down in turn, each sharing a side with the next. How many straws does it use?
17. 17.Which of these is a beam bridge? (a) tall towers hold cables (b) pushes out on its ends (c) the simplest bridge (d) a curve under the deck
18. 18.🛞 More or less friction: a grippy rubber sole? (a) more friction (b) less friction
19. 19.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: sandpaper 10 N, ice 2 N, a wooden plank 3 N, a carpet 7 N. Which surface gave the most friction? (a) a wooden plank (b) sandpaper (c) a carpet (d) ice
20. 20.Which of these is caused by muscular force? (a) a fridge magnet sticks (b) brakes stop a bicycle (c) squeezing a lemon (d) rain falls to the ground
21. 21.🔢 To follow the engineering design process, which comes first: “Ask” or “Plan”? (a) Ask (b) Plan
22. 22.True or false: a shelf on two brackets uses an arch. (a) True (b) False
23. 23.True or false: adding cross bracing makes a building safer in earthquakes. (a) True (b) False
24. 24.Which of these is caused by gravity? (a) a thrown ball comes down (b) a fridge magnet sticks (c) squeezing a lemon (d) shoes grip the floor
25. 25.🏋️ Work is done when a force moves something … (a) without moving it (b) very slowly (c) through a distance (d) only upwards
26. 26.Which of these makes a building safer in earthquakes? (a) raising heavy tanks high (b) making brittle joints (c) keeping a simple shape (d) building tall and narrow
27. 27.🌉 In a suspension bridge, the main cables are in … (a) no force (b) compression (c) tension (d) friction
28. 28.📐 How many millimetres are in 1 centimetre? (a) 5 (b) 1000 (c) 100 (d) 10
29. 29.🛞 How can we reduce friction in a machine? (a) press parts harder (b) oil the moving parts (c) make parts rough (d) add sand
30. 30.🔧 Which tool would you use to turn a screw? (a) a screwdriver (b) a spirit level (c) a hand drill (d) a hammer
31. 31.True or false: a pair of tweezers is a class 3 lever (effort in the middle). (a) True (b) False
32. 32.🤝 A teammate’s idea seems odd. What should you do first? (a) walk away (b) laugh at it (c) listen and ask why (d) ignore it
33. 33.🌉 Which bridge type: “the simplest bridge”? (a) suspension bridge (b) beam bridge (c) arch bridge
34. 34.⚖️ Going along a lever from one end to the other, the order is: fulcrum, load, effort. Which class of lever is it? (a) class 3 (b) class 1 (c) class 2
35. 35.⚖️ A seesaw balances. Ravi (? N) sits 4 m from the pivot on one side; Asha (680 N) sits 1 m from the pivot on the other side. What is the missing weight in newtons?
36. 36.True or false: “good for short gaps” is an arch bridge. (a) False (b) True
37. 37.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: sandpaper 9 N, ice 4 N, a glass sheet 6 N, a carpet 7 N. Which surface gave the most friction? (a) ice (b) sandpaper (c) a carpet (d) a glass sheet
38. 38.⚙️ Which simple machine is a steering wheel? (a) wedge (b) inclined plane (c) wheel and axle (d) pulley
39. 39.🌉 A beam bridge 270 m long is split by piers into 6 equal spans. How long is each span, in metres?
40. 40.True or false: a civil engineer plans a space mission. (a) True (b) False

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