Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 773 · 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 winch has a wheel of radius 8 cm and an axle of radius 2 cm. What effort on the wheel lifts a 480 N bucket on the axle, in newtons? (ideal)
2. 2.Which job does a civil engineer do? (a) designs a metro tunnel (b) builds rockets (c) designs artificial limbs (d) builds a website
3. 3.📐 A model car is drawn so that 1 cm stands for 30 cm. The car is 11 cm long in the drawing. How long is the real car, in centimetres?
4. 4.Which of these needs a transparent material? (a) a spectacle lens (b) an umbrella cover (c) a water tank (d) a skipping rope
5. 5.📐 A model car is drawn so that 1 cm stands for 10 cm. The car is 9 cm long in the drawing. How long is the real car, in centimetres?
6. 6.🛞 Friction acts … (a) with the motion (b) only upwards (c) only on ice (d) against the motion
7. 7.♻️ Reduce, reuse or recycle: refill a water bottle? (a) reuse (b) reduce (c) recycle
8. 8.🏚️ Does using flexible joints make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
9. 9.🤝 Is it good or poor teamwork to give kind feedback? (a) good teamwork (b) poor teamwork
10. 10.⚙️ Which simple machine is a knife edge? (a) screw (b) inclined plane (c) wedge (d) lever
11. 11.True or false: to leave tools on the floor is not safe. (a) False (b) True
12. 12.🏚️ What do engineers use to test models of buildings for earthquakes? (a) a telescope (b) a microscope (c) a shake table (d) a fridge
13. 13.⚙️ Which simple machine is a nut and bolt? (a) wheel and axle (b) inclined plane (c) lever (d) screw
14. 14.🤝 A team of 4 shares 12 equal jobs fairly. Each job takes 10 minutes. How many minutes does each person work?
15. 15.🪝 Fixed or movable pulley: which one needs effort = load? (a) a fixed pulley (b) a movable pulley
16. 16.True or false: a ceiling fan is made by engineers. (a) True (b) False
17. 17.True or false: a movable pulley halves the effort. (a) True (b) False
18. 18.🏋️ A force of 430 N did 430 J of work. How many metres did the object move?
19. 19.Which of these makes a building safer in earthquakes? (a) making brittle joints (b) stacking loose bricks (c) building tall and narrow (d) having a wide base
20. 20.🪝 A winch has a wheel of radius 20 cm and an axle of radius 5 cm. What effort on the wheel lifts a 600 N bucket on the axle, in newtons? (ideal)
21. 21.📐 On a plan, 1 cm stands for 5 m. A wall is 19 cm long on the plan. How long is the real wall, in metres?
22. 22.🌉 Which bridge type: “stones squeezed together”? (a) suspension bridge (b) beam bridge (c) arch bridge
23. 23.📐 A model car is drawn so that 1 cm stands for 10 cm. The car is 3 cm long in the drawing. How long is the real car, in centimetres?
24. 24.True or false: to smooth a rough edge, use a saw. (a) False (b) True
25. 25.True or false: a round palace roof uses a dome. (a) False (b) True
26. 26.📐 A beam is 560 cm long. How long is it in metres? =
27. 27.⚖️ Along a straight bar, measured from the left end, the effort is at 10 cm, the fulcrum at 20 cm and the load at 60 cm. Which class of lever is it? (a) class 3 (b) class 2 (c) class 1
28. 28.🔍 Which is the odd one out? (a) a dam (b) a railway track (c) a banyan tree (d) a mobile phone
29. 29.🔍 Which is the odd one out? (a) raising heavy tanks high (b) using a heavy roof (c) adding cross bracing (d) leaving out steel bars
30. 30.True or false: a cooking pot handle needs a transparent material. (a) False (b) True
31. 31.🪝 A pulley system has 1 rope section holding up the load. To lift the load by 7 m, how many metres of rope must you pull?
32. 32.Which job does a chemical engineer do? (a) designs artificial limbs (b) builds a website (c) designs a paint factory (d) designs a metro tunnel
33. 33.🔍 Which is the odd one out? (a) keep ice for 1 hour (b) lift a cup of water (c) finish in 40 minutes (d) carry 10 coins
34. 34.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) two (c) one (d) none
35. 35.🤝 A team of 4 shares 24 equal jobs fairly. Each job takes 7 minutes. How many minutes does each person work?
36. 36.🛠️ Is a ceiling fan made by engineers or found in nature? (a) found in nature (b) made by engineers
37. 37.🪢 Which material is good in tension but useless in compression? (a) a brick (b) a stone (c) a concrete block (d) a rope
38. 38.Which of these needs a heat insulator? (a) a car seat belt (b) a yoga mat (c) an umbrella cover (d) a cooking pot handle
39. 39.📋 For a model bridge challenge, is “be under 30 cm tall” a constraint or a criterion? (a) a constraint (b) a criterion
40. 40.🏋️ A smooth ramp is 6 m long and rises 3 m. What effort pushes a 2000 N box up it, in newtons? (ideal ramp, no friction)

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