Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 156 · 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 smooth ramp is 12 m long and rises 2 m. What effort pushes a 3000 N box up it, in newtons? (ideal ramp, no friction)
2. 2.🪢 A concrete slab weighing 11200 N rests evenly on 8 identical pillars. What compression force does each pillar carry, in newtons?
3. 3.🧑‍🔧 Which kind of engineer plans a space mission? (a) aerospace (b) chemical (c) mechanical (d) biomedical
4. 4.True or false: your forearm is a class 3 lever (effort in the middle). (a) False (b) True
5. 5.Which need does a water filter meet? (a) talk to someone far away (b) make water safe to drink (c) reach a top floor fast (d) carry many people far
6. 6.⚖️ A lever balances when … (a) the fulcrum moves (b) the bar is short (c) turning effects match (d) both weights are equal
7. 7.🪢 Tension or compression: a crane lifting cable? (a) tension (b) compression
8. 8.♻️ Reduce, reuse or recycle: use a jar as a pen stand? (a) reduce (b) reuse (c) recycle
9. 9.📐 A model car is drawn so that 1 cm stands for 10 cm. The car is 13 cm long in the drawing. How long is the real car, in centimetres?
10. 10.Which job does a civil engineer do? (a) designs electric motors (b) makes medicines in bulk (c) designs a flyover (d) designs factory machines
11. 11.True or false: a temple column is in compression (pushed). (a) False (b) True
12. 12.🏋️ A smooth ramp is 8 m long and rises 2 m. What effort pushes a 2000 N box up it, in newtons? (ideal ramp, no friction)
13. 13.🤝 A teammate’s idea seems odd. What should you do first? (a) listen and ask why (b) ignore it (c) walk away (d) laugh at it
14. 14.Which of these is a beam bridge? (a) pushes out on its ends (b) deck hangs from cables (c) a curve under the deck (d) a log across a stream
15. 15.⚖️ Going along a lever from one end to the other, the order is: fulcrum, effort, load. Which class of lever is it? (a) class 1 (b) class 2 (c) class 3
16. 16.True or false: “good for short gaps” is an arch bridge. (a) True (b) False
17. 17.♻️ Which energy source will never run out? (a) petrol (b) sunlight (c) diesel (d) coal
18. 18.Which of these makes a building safer in earthquakes? (a) building tall and narrow (b) adding steel to concrete (c) stacking loose bricks (d) using a heavy roof
19. 19.🔍 Which is the odd one out? (a) raising heavy tanks high (b) making brittle joints (c) stacking loose bricks (d) adding cross bracing
20. 20.🏋️ A force of 10 N pushes a cart 1 m along the floor. How much work is done, in joules?
21. 21.🔍 Which is the odd one out? (a) a grippy rubber sole (b) oil on a squeaky hinge (c) a smooth steel slide (d) skating on ice
22. 22.⚖️ Along a straight bar, measured from the left end, the effort is at 0 cm, the fulcrum at 10 cm and the load at 30 cm. Which class of lever is it? (a) class 2 (b) class 3 (c) class 1
23. 23.🪝 A bucket weighing 430 N is lifted with a single fixed pulley at the top of a well. What effort is needed, in newtons? (ideal pulley, no friction)
24. 24.🏚️ Does making brittle joints make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
25. 25.⚖️ Going along a lever from one end to the other, the order is: load, fulcrum, effort. Which class of lever is it? (a) class 3 (b) class 1 (c) class 2
26. 26.🏋️ A force of 30 N pushes a cart 10 m along the floor. How much work is done, in joules?
27. 27.🌉 In a suspension bridge, the main cables are in … (a) tension (b) no force (c) compression (d) friction
28. 28.⚙️ Which simple machine is a door stopper? (a) wheel and axle (b) wedge (c) inclined plane (d) lever
29. 29.🪝 A well winch has a handle (wheel) of radius 16 cm turning an axle of radius 4 cm. What is its mechanical advantage (MA)?
30. 30.Which job is a saw for? (a) make a hole in wood (b) cut a wooden plank (c) measure a long length (d) tighten a nut
31. 31.🪢 Tension is a force that … (a) heats things (b) pushes or squeezes (c) pulls or stretches (d) turns things
32. 32.Which of these makes a building less safe in earthquakes? (a) stacking loose bricks (b) adding steel to concrete (c) having a wide base (d) fitting rubber base pads
33. 33.⚖️ A seesaw balances. Ravi (360 N) sits 1 m from the pivot on one side; Asha (? N) sits 3 m from the pivot on the other side. What is the missing weight in newtons?
34. 34.💪 A bag has a mass of 43 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
35. 35.🪝 A load of 810 N hangs from a pulley system in which 3 rope sections hold up the load. What effort is needed, in newtons? (ideal pulleys)
36. 36.True or false: to talk over others is good teamwork. (a) False (b) True
37. 37.🛠️ Is a coral reef made by engineers or found in nature? (a) found in nature (b) made by engineers
38. 38.🤝 A team plans for 45 minutes, builds for 30 minutes and then tests for 15 minutes, one after another. How many minutes is that in all?
39. 39.🪝 A pulley system lifts a 1000 N load with an effort of 250 N. What is its mechanical advantage (MA)?
40. 40.📐 How many centimetres are in 1 metre? (a) 60 (b) 100 (c) 10 (d) 1000

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