Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 953 · 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: to let adults use hot glue is safe. (a) True (b) False
2. 2.⚙️ How many simple machines are there in the usual list? (a) 6 (b) 12 (c) 3 (d) 10
3. 3.⚖️ Along a straight bar, measured from the left end, the effort is at 40 cm, the fulcrum at 10 cm and the load at 0 cm. Which class of lever is it? (a) class 1 (b) class 2 (c) class 3
4. 4.🧪 A paper bridge was tested three times. It held 260 g, 260 g and 260 g. What is the mean (average) load it held, in grams?
5. 5.📋 A constraint is … (a) a goal for success (b) a limit you must keep to (c) a final test (d) a kind of glue
6. 6.⚖️ A lever bar balances. The load is ? N at 10 cm from the fulcrum. The effort is 10 N at 30 cm from the fulcrum on the other side. What is the missing force in newtons?
7. 7.True or false: a swing chain is in compression (pushed). (a) True (b) False
8. 8.True or false: a mechanical engineer keeps data safe online. (a) False (b) True
9. 9.📐 On a plan, 1 cm stands for 10 m. A real bridge is 50 m long. How long is it on the plan, in centimetres?
10. 10.⚙️ 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
11. 11.📐 A model car is drawn so that 1 cm stands for 40 cm. The car is 10 cm long in the drawing. How long is the real car, in centimetres?
12. 12.⚖️ A seesaw balances. Ravi (? N) sits 4 m from the pivot on one side; Asha (800 N) sits 1 m from the pivot on the other side. What is the missing weight in newtons?
13. 13.🪝 A load of 540 N hangs from a pulley system in which 3 rope sections hold up the load. What effort is needed, in newtons? (ideal pulleys)
14. 14.⚖️ A seesaw balances. Kabir (600 N) sits 2 m from the pivot on one side; Meena (? N) sits 4 m from the pivot on the other side. What is the missing weight in newtons?
15. 15.🌉 Which bridge type: “a curve under the deck”? (a) suspension bridge (b) arch bridge (c) beam bridge
16. 16.🏚️ Does stacking loose bricks make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
17. 17.📋 Criterion: the model bridge must hold at least 700 g. In the test it held 550 g. Does it meet the criterion? (a) No (b) Yes
18. 18.⚖️ A seesaw balances. Arjun (? N) sits 4 m from the pivot on one side; Kabir (520 N) sits 2 m from the pivot on the other side. What is the missing weight in newtons?
19. 19.🏋️ A force of 310 N pushes a cart 8 m along the floor. How much work is done, in joules?
20. 20.🏚️ Does building tall and narrow make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
21. 21.📐 Why do engineers use scale drawings? (a) to hide sizes (b) to save ink only (c) big things fit on paper (d) to make them pretty
22. 22.💪 A force is a … (a) push or a pull (b) unit of time (c) type of sound (d) kind of colour
23. 23.True or false: a fixed pulley only changes direction. (a) False (b) True
24. 24.⚖️ Which class of lever is a pair of pliers? (a) class 3 (b) class 2 (c) class 1
25. 25.Which job does a computer engineer do? (a) designs school networks (b) runs a fertiliser plant (c) designs artificial limbs (d) refines crude oil
26. 26.🔍 Which is the odd one out? (a) cotton cloth (b) plastic (c) glass (d) aluminium
27. 27.🔍 Which is the odd one out? (a) copper (b) brass (c) plastic (d) aluminium
28. 28.🏚️ What do engineers use to test models of buildings for earthquakes? (a) a shake table (b) a microscope (c) a telescope (d) a fridge
29. 29.⚖️ A lever bar balances. The load is 500 N at 20 cm from the fulcrum. The effort is 200 N at ? cm from the fulcrum on the other side. What is the missing distance in centimetres?
30. 30.🏋️ A 1 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
31. 31.🔍 Which is the odd one out? (a) a table leg (b) a stone in an arch (c) a hanging lamp chain (d) a temple column
32. 32.⚙️ Which simple machine is a door stopper? (a) screw (b) lever (c) wedge (d) inclined plane
33. 33.📐 A model car is drawn so that 1 cm stands for 20 cm. The car is 4 cm long in the drawing. How long is the real car, in centimetres?
34. 34.🌉 Which bridge type: “a rope bridge in hills”? (a) suspension bridge (b) arch bridge (c) beam bridge
35. 35.⚖️ A lever bar balances. The load is 900 N at 30 cm from the fulcrum. The effort is ? N at 100 cm from the fulcrum on the other side. What is the missing force in newtons?
36. 36.📋 Your team’s budget is ₹28. You must buy one roll of tape for ₹10. Straws cost ₹1 each. What is the greatest number of straws you can buy?
37. 37.Which of these is in tension (pulled)? (a) a pillar under a roof (b) a temple column (c) a stretched rubber band (d) a bridge pier
38. 38.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to sell them at once (c) to test ideas cheaply (d) to decorate a room
39. 39.True or false: to use the same load is good testing. (a) False (b) True
40. 40.True or false: to hide a mistake is good teamwork. (a) False (b) True

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