Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 188 · 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 team of 5 shares 10 equal jobs fairly. Each job takes 4 minutes. How many minutes does each person work?
2. 2.💪 A cart is pulled to the right with 60 N and to the left with 65 N. Which way does the net force act? (a) no net force (b) to the right (c) to the left
3. 3.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a wooden plank 9 N, a carpet 11 N, ice 3 N, a glass sheet 5 N. How many newtons more were needed on a carpet than on ice?
4. 4.Which of these needs a heat insulator? (a) a magnifier lens (b) a water tank (c) an oven glove (d) a roof sheet
5. 5.💪 Two children push a box to the right, one with 70 N and the other with 75 N. What is the net (total) force on the box, in newtons?
6. 6.🔍 Which is the odd one out? (a) a cloud (b) a railway track (c) a mountain (d) a banyan tree
7. 7.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 70 g. How many more grams did it hold?
8. 8.🛞 More or less friction: a rough doormat? (a) less friction (b) more friction
9. 9.⚖️ Which class of lever is a fishing rod? (a) class 3 (b) class 2 (c) class 1
10. 10.🌉 In a stone arch bridge, the stones are in … (a) friction (b) tension (c) compression (d) no force
11. 11.🛠️ People need to store water for summer. Which invention helps? (a) a fridge (b) a dam (c) a solar panel (d) a water filter
12. 12.⚙️ Which simple machine is a wheelchair ramp? (a) screw (b) pulley (c) inclined plane (d) wheel and axle
13. 13.True or false: to check it against goals is the Improve step. (a) False (b) True
14. 14.⚖️ Which class of lever is a pair of kitchen tongs? (a) class 3 (b) class 1 (c) class 2
15. 15.⚙️ How many simple machines are there in the usual list? (a) 10 (b) 6 (c) 3 (d) 12
16. 16.📋 For a model bridge challenge, is “finish in 40 minutes” a constraint or a criterion? (a) a constraint (b) a criterion
17. 17.⚖️ A lever bar balances. The load is ? N at 10 cm from the fulcrum. The effort is 90 N at 70 cm from the fulcrum on the other side. What is the missing force in newtons?
18. 18.🤝 Is it good or poor teamwork to agree before changing? (a) poor teamwork (b) good teamwork
19. 19.True or false: a fixed pulley makes you pull 2× rope. (a) True (b) False
20. 20.🤝 A teammate’s idea seems odd. What should you do first? (a) ignore it (b) walk away (c) laugh at it (d) listen and ask why
21. 21.💪 Two children push a box to the right, one with 15 N and the other with 55 N. What is the net (total) force on the box, in newtons?
22. 22.Which of these is a wedge? (a) a bottle opener (b) a flagpole rope wheel (c) the tip of a nail (d) a jar lid
23. 23.🧑‍🔧 Which kind of engineer builds rockets? (a) biomedical (b) aerospace (c) mechanical (d) civil
24. 24.📐 A model car is drawn so that 1 cm stands for 30 cm. The car is 3 cm long in the drawing. How long is the real car, in centimetres?
25. 25.⚖️ A seesaw balances. Asha (570 N) sits 4 m from the pivot on one side; Meena (760 N) sits ? m from the pivot on the other side. What is the missing distance in metres?
26. 26.🤝 Is it good or poor teamwork to own up to a mistake? (a) good teamwork (b) poor teamwork
27. 27.📐 How many millimetres are in 1 centimetre? (a) 1000 (b) 5 (c) 10 (d) 100
28. 28.🛠️ Is a water filter made by engineers or found in nature? (a) found in nature (b) made by engineers
29. 29.🛠️ People need to go through a mountain. Which invention helps? (a) a lift (b) a water filter (c) a tunnel (d) a train
30. 30.♻️ Is ocean wave energy a renewable or a non-renewable energy source? (a) renewable (b) non-renewable
31. 31.True or false: adding cross bracing makes a building less safe in earthquakes. (a) True (b) False
32. 32.Which job does a chemical engineer do? (a) designs a paint factory (b) lays out a highway (c) designs hearing aids (d) designs a gearbox
33. 33.🪢 A sign weighing 100 N hangs from 5 identical vertical ropes that share the load equally. What is the tension in each rope, in newtons?
34. 34.📐 On a plan, 1 cm stands for 10 m. A wall is 7 cm long on the plan. How long is the real wall, in metres?
35. 35.🛞 Friction acts … (a) against the motion (b) only on ice (c) with the motion (d) only upwards
36. 36.🧑‍🔧 Which branch of engineering uses engineering to help doctors? (a) aerospace (b) electrical (c) biomedical (d) civil
37. 37.⚖️ A seesaw balances. Kabir (160 N) sits 2 m from the pivot on one side; Ravi (320 N) sits ? m from the pivot on the other side. What is the missing distance in metres?
38. 38.📐 On a plan, 1 cm stands for 2 m. A real bridge is 10 m long. How long is it on the plan, in centimetres?
39. 39.⚙️ A wedge is … (a) two ramps back to back (b) a wheel on a rod (c) a rope on a wheel (d) a bar on a pivot
40. 40.🏋️ A force of 260 N pushes a cart 2 m along the floor. How much work is done, in joules?

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