Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 137 · 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.🏋️ Pushing a crate 2 m took 440 J of work. What force was used, in newtons?
2. 2.🏋️ A force of 120 N did 960 J of work. How many metres did the object move?
3. 3.⚖️ To lift a heavy rock with a crowbar more easily, push … (a) on the rock (b) far from the fulcrum (c) near the fulcrum (d) on the fulcrum
4. 4.📋 For a model bridge challenge, is “spend at most ₹100” a constraint or a criterion? (a) a constraint (b) a criterion
5. 5.🏋️ A force of 160 N did 160 J of work. How many metres did the object move?
6. 6.True or false: a brick at a wall base is in tension (pulled). (a) False (b) True
7. 7.🔍 Which is the odd one out? (a) raising heavy tanks high (b) fitting rubber base pads (c) using a heavy roof (d) making brittle joints
8. 8.Which of these needs a waterproof material? (a) a switch contact (b) a tea flask lining (c) a raincoat (d) a hair band
9. 9.📐 On a plan, 1 cm stands for 10 m. A wall is 8 cm long on the plan. How long is the real wall, in metres?
10. 10.🔺 Which shape keeps its shape best when its corners are pinned? (a) square (b) rectangle (c) triangle (d) hexagon
11. 11.🦺 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
12. 12.🏋️ A force of 60 N pushes a cart 6 m along the floor. How much work is done, in joules?
13. 13.⚖️ A lever bar balances. The load is 90 N at 20 cm from the fulcrum. The effort is 60 N at ? cm from the fulcrum on the other side. What is the missing distance in centimetres?
14. 14.Which of these is a wheel and axle? (a) a truck loading ramp (b) an axe blade (c) a well winch handle (d) a window blind cord
15. 15.🤝 A team plans for 55 minutes, builds for 15 minutes and then tests for 30 minutes, one after another. How many minutes is that in all?
16. 16.⚖️ In a class 2 lever, what is in the middle? (a) the fulcrum (b) the load (c) the effort (d) the axle
17. 17.🔍 Which is the odd one out? (a) plastic (b) glass (c) iron (d) clay pottery
18. 18.⚙️ How many simple machines are there in the usual list? (a) 10 (b) 3 (c) 6 (d) 12
19. 19.⚖️ A lever bar balances. The load is ? N at 50 cm from the fulcrum. The effort is 350 N at 70 cm from the fulcrum on the other side. What is the missing force in newtons?
20. 20.⚙️ A wedge is … (a) a rope on a wheel (b) two ramps back to back (c) a bar on a pivot (d) a wheel on a rod
21. 21.🪢 A concrete slab weighing 19600 N rests evenly on 7 identical pillars. What compression force does each pillar carry, in newtons?
22. 22.Which job is sandpaper for? (a) cut a wooden plank (b) smooth a rough edge (c) make a hole in wood (d) check a shelf is level
23. 23.🌉 A beam bridge 50 m long is split by piers into 5 equal spans. How long is each span, in metres?
24. 24.🔍 Which is the odd one out? (a) oil on a squeaky hinge (b) a wheel on ball bearings (c) a smooth steel slide (d) a grippy rubber sole
25. 25.🔢 To follow the engineering design process, what comes right after “Plan”? (a) Test (b) Ask (c) Improve (d) Create
26. 26.🔄 Which design-process step is it to build the model? (a) Test (b) Plan (c) Create (d) Imagine
27. 27.🪝 A wheel and axle is a big wheel fixed to … (a) a flat ramp (b) a loose rope (c) a smaller rod (axle) (d) a sharp wedge
28. 28.📐 Why do engineers use scale drawings? (a) to make them pretty (b) big things fit on paper (c) to save ink only (d) to hide sizes
29. 29.⚖️ Along a straight bar, measured from the left end, the effort is at 50 cm, the fulcrum at 40 cm and the load at 30 cm. Which class of lever is it? (a) class 3 (b) class 2 (c) class 1
30. 30.True or false: a microscope helps people carry many people far. (a) True (b) False
31. 31.Which job does an electrical engineer do? (a) wires a new building (b) builds hospital scanners (c) designs artificial limbs (d) keeps data safe online
32. 32.True or false: a civil engineer designs a metro tunnel. (a) True (b) False
33. 33.Which need does a dam meet? (a) keep food fresh longer (b) go through a mountain (c) store water for summer (d) reach a top floor fast
34. 34.True or false: adding steel to concrete makes a building safer in earthquakes. (a) True (b) False
35. 35.🏋️ A force of 170 N pushes a cart 1 m along the floor. How much work is done, in joules?
36. 36.🏋️ An 11 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
37. 37.🏚️ Three solid model towers are made of the same material. Tower A is 120 cm tall on a 20 cm wide base, tower B is 30 cm tall on a 10 cm base and tower C is 40 cm tall on a 10 cm base. Which is the hardest to tip over? (a) tower A (b) tower B (c) tower C
38. 38.📋 Criterion: the model bridge must hold at least 400 g. In the test it held 500 g. Does it meet the criterion? (a) Yes (b) No
39. 39.💪 Two equal forces push on a box from opposite sides. They are … (a) doubled (b) balanced (c) unbalanced (d) gravity
40. 40.🤝 Is it good or poor teamwork to agree before changing? (a) poor teamwork (b) good teamwork

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