Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 98 · 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.📐 On a plan, 1 cm stands for 5 m. A wall is 14 cm long on the plan. How long is the real wall, in metres?
2. 2.🤝 Is it good or poor teamwork to help a stuck teammate? (a) good teamwork (b) poor teamwork
3. 3.Which job does a mechanical engineer do? (a) designs aeroplane wings (b) designs school networks (c) designs bicycle gears (d) wires a new building
4. 4.💪 A bag has a mass of 3 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
5. 5.🪝 Fixed or movable pulley: which one only changes direction? (a) a movable pulley (b) a fixed pulley
6. 6.♻️ A school bench is made from 200 recycled plastic bottles. How many benches can be made from 600 bottles?
7. 7.🏋️ A force of 280 N pushes a cart 8 m along the floor. How much work is done, in joules?
8. 8.True or false: “the simplest bridge” is an arch bridge. (a) True (b) False
9. 9.🔍 Which is the odd one out? (a) a bottle opener (b) a flagpole rope wheel (c) a crane hook block (d) a well-bucket rope wheel
10. 10.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a glass sheet 4 N, a wooden plank 8 N, a carpet 11 N, sandpaper 15 N. Which surface gave the most friction? (a) sandpaper (b) a wooden plank (c) a glass sheet (d) a carpet
11. 11.🔍 Which is the odd one out? (a) skip writing results (b) guess, do not measure (c) test it only once (d) record every result
12. 12.🧱 Which property matters most for a hair band? (a) heat insulator (b) waterproof (c) electrical conductor (d) flexible
13. 13.True or false: to ask who will use it is the Ask step. (a) True (b) False
14. 14.💪 Is hitting a cricket ball a push or a pull? (a) a push (b) a pull
15. 15.Which of these is an inclined plane? (a) a bottle opener (b) a crane hook block (c) a crowbar (d) a truck loading ramp
16. 16.📋 For a model bridge challenge, is “spend at most ₹100” a constraint or a criterion? (a) a criterion (b) a constraint
17. 17.Which of these makes a building safer in earthquakes? (a) having a wide base (b) stacking loose bricks (c) leaving out steel bars (d) building tall and narrow
18. 18.🔍 Which is the odd one out? (a) let adults use hot glue (b) cut away from your body (c) put tools back after use (d) use a cracked tool
19. 19.True or false: to pick the build order is the Plan step. (a) False (b) True
20. 20.🔍 Which is the odd one out? (a) a stretched rubber band (b) a tug of war rope (c) a swing chain (d) a temple column
21. 21.Which of these is in compression (pushed)? (a) a suspension cable (b) a pillar under a roof (c) a tow rope on a car (d) a stretched rubber band
22. 22.🏋️ An 11 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
23. 23.True or false: building tall and narrow makes a building less safe in earthquakes. (a) True (b) False
24. 24.True or false: having a wide base makes a building safer in earthquakes. (a) True (b) False
25. 25.🦺 In the workshop, is it safe to leave tools on the floor? (a) not safe (b) safe
26. 26.True or false: a well-bucket rope wheel is a pulley. (a) False (b) True
27. 27.📐 On a plan, 1 cm stands for 20 m. A wall is 12 cm long on the plan. How long is the real wall, in metres?
28. 28.📋 Criterion: the model bridge must hold at least 900 g. In the test it held 1050 g. Does it meet the criterion? (a) Yes (b) No
29. 29.💪 Which force pulls everything towards the Earth? (a) wind (b) magnetism (c) gravity (d) friction
30. 30.⚖️ A seesaw balances. Ravi (150 N) sits 2 m from the pivot on one side; Arjun (? N) sits 1 m from the pivot on the other side. What is the missing weight in newtons?
31. 31.🪝 More rope sections holding a load means … (a) less effort needed (b) the load floats (c) no change (d) more effort needed
32. 32.True or false: an aerospace engineer designs hearing aids. (a) True (b) False
33. 33.True or false: to carry scissors closed is safe. (a) True (b) False
34. 34.🪝 A pulley system lifts a 300 N load with an effort of 100 N. What is its mechanical advantage (MA)?
35. 35.True or false: a civil engineer designs artificial limbs. (a) True (b) False
36. 36.🌉 A beam bridge is 270 m long. Piers split it into equal spans of 30 m. How many spans are there?
37. 37.🪢 A beam rests on two supports and is pressed down in the middle. Its bottom edge is … (a) squeezed (compression) (b) twisted (c) stretched (tension) (d) not affected
38. 38.⚙️ Which simple machine is a steering wheel? (a) screw (b) lever (c) wedge (d) wheel and axle
39. 39.True or false: to turn a screw, use a spanner. (a) False (b) True
40. 40.True or false: a biomedical engineer designs artificial limbs. (a) False (b) True

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