Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 464 · 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.True or false: powder on a carrom board gives less friction. (a) False (b) True
2. 2.🧑‍🔧 Which branch of engineering designs buildings, roads and bridges? (a) biomedical (b) chemical (c) civil (d) computer
3. 3.🔺 Which strong shape does a plank over a drain use? (a) beam (b) dome (c) triangle (d) arch
4. 4.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “sketch three ideas”? (a) strengthen the weak part (b) sketch three ideas
5. 5.🔍 Which is the odd one out? (a) use only paper and tape (b) fit on a school desk (c) roll at least 2 metres (d) spend at most ₹100
6. 6.🛠️ Is a seashell made by engineers or found in nature? (a) made by engineers (b) found in nature
7. 7.🔧 Which tool would you use to measure a long length? (a) a hammer (b) a spirit level (c) pliers (d) a tape measure
8. 8.True or false: skating on ice gives less friction. (a) False (b) True
9. 9.♻️ Is diesel a renewable or a non-renewable energy source? (a) renewable (b) non-renewable
10. 10.True or false: a wheel on ball bearings gives more friction. (a) True (b) False
11. 11.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
12. 12.🛞 More or less friction: a rough doormat? (a) less friction (b) more friction
13. 13.Which of these is a wheel and axle? (a) a wood screw (b) a round doorknob (c) a nutcracker (d) a playground slide
14. 14.True or false: using a heavy roof makes a building safer in earthquakes. (a) False (b) True
15. 15.⚖️ A seesaw balances. Arjun (160 N) sits 3 m from the pivot on one side; Ravi (480 N) sits ? m from the pivot on the other side. What is the missing distance in metres?
16. 16.🔧 Which tool would you use to cut a wooden plank? (a) sandpaper (b) a spanner (c) a saw (d) a hammer
17. 17.🔍 Which is the odd one out? (a) a lift (b) a bicycle (c) a river (d) a bridge
18. 18.📋 Criteria are … (a) goals a design must meet (b) the team names (c) the limits on money (d) the tools you use
19. 19.🌉 Which bridge type can cross the widest gap in one span? (a) arch bridge (b) beam bridge (c) log bridge (d) suspension bridge
20. 20.Which of these is reduce (use less)? (a) plant in old tyres (b) reuse gift paper (c) turn plastic into tiles (d) fix a dripping tap
21. 21.📐 A model car is drawn so that 1 cm stands for 20 cm. The car is 14 cm long in the drawing. How long is the real car, in centimetres?
22. 22.📋 A design meets every criterion but costs more than the budget. Is it acceptable? (a) yes, it works (b) no, it breaks a limit (c) only if it is red (d) yes, always
23. 23.🧪 A paper bridge was tested three times. It held 420 g, 320 g and 220 g. What is the mean (average) load it held, in grams?
24. 24.🛞 More or less friction: a wet tiled floor? (a) less friction (b) more friction
25. 25.⚖️ On a seesaw, a heavier child should sit … (a) anywhere (b) farther from the pivot (c) on the pivot (d) closer to the pivot
26. 26.True or false: pulling a cart is a pull. (a) True (b) False
27. 27.⚖️ A seesaw balances. Arjun (220 N) sits ? m from the pivot on one side; Ravi (110 N) sits 2 m from the pivot on the other side. What is the missing distance in metres?
28. 28.🏋️ A smooth ramp is 12 m long and rises 2 m. What effort pushes a 5700 N box up it, in newtons? (ideal ramp, no friction)
29. 29.🪝 A well winch has a handle (wheel) of radius 40 cm turning an axle of radius 5 cm. What is its mechanical advantage (MA)?
30. 30.Which need does a microscope meet? (a) go through a mountain (b) store water for summer (c) see very tiny things (d) cross a wide river
31. 31.⚖️ A seesaw balances. Kabir (? N) sits 1 m from the pivot on one side; Asha (110 N) sits 1 m from the pivot on the other side. What is the missing weight in newtons?
32. 32.⚙️ Most simple machines make work easier by letting us … (a) stop all friction (b) switch off gravity (c) make new energy (d) use a smaller force
33. 33.Which of these is a screw? (a) a claw hammer on a nail (b) a water tap handle (c) a nut and bolt (d) a door stopper
34. 34.⚖️ Which class of lever is a pair of scissors? (a) class 3 (b) class 2 (c) class 1
35. 35.♻️ Is flowing river water a renewable or a non-renewable energy source? (a) non-renewable (b) renewable
36. 36.🔺 One side of a straw bridge is a row of 11 triangles standing point-up and point-down in turn, each sharing a side with the next. How many straws does it use?
37. 37.🔍 Which is the odd one out? (a) a playground slide (b) an axe blade (c) a wheelchair ramp (d) a road up a hill
38. 38.Which of these is in tension (pulled)? (a) a brick at a wall base (b) a squeezed spring (c) a bridge pier (d) a hanging lamp chain
39. 39.🏚️ Does adding cross bracing make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
40. 40.🏋️ A force of 460 N pushes a cart 2 m along the floor. How much work is done, in joules?

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