Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 293 · 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.⚖️ Which class of lever is a pair of tweezers? (a) class 2 (b) class 1 (c) class 3
2. 2.⚙️ Which simple machine is a wood screw? (a) screw (b) lever (c) wedge (d) inclined plane
3. 3.⚖️ A seesaw balances. Kabir (510 N) sits ? m from the pivot on one side; Meena (170 N) sits 3 m from the pivot on the other side. What is the missing distance in metres?
4. 4.🛞 More or less friction: skating on ice? (a) more friction (b) less friction
5. 5.🧑‍🔧 Which branch of engineering designs machines with moving parts? (a) chemical (b) civil (c) mechanical (d) biomedical
6. 6.True or false: having a wide base makes a building safer in earthquakes. (a) True (b) False
7. 7.🪝 A pulley system lifts a 260 N load with an effort of 130 N. What is its mechanical advantage (MA)?
8. 8.True or false: to brainstorm many ideas is the Create step. (a) False (b) True
9. 9.🪢 Tension or compression: a crane lifting cable? (a) compression (b) tension
10. 10.🔺 A frame shaped like a triangle is made of straws joined by loose pins, with 0 corner-to-corner braces. Is it rigid or wobbly? (a) wobbly (b) rigid
11. 11.🪝 A bucket weighing 190 N is lifted with a single fixed pulley at the top of a well. What effort is needed, in newtons? (ideal pulley, no friction)
12. 12.🔺 A beam bends under a load. Its top side is … (a) floating (b) squeezed (compression) (c) stretched (tension) (d) not affected
13. 13.📐 A model car is drawn so that 1 cm stands for 10 cm. The car is 4 cm long in the drawing. How long is the real car, in centimetres?
14. 14.True or false: to list the materials is the Ask step. (a) True (b) False
15. 15.🔺 Why can an arch carry heavy loads? (a) it is very light (b) it works in compression (c) it bends easily (d) it is hollow
16. 16.🔍 Which is the odd one out? (a) the tip of a nail (b) a road up a hill (c) an axe blade (d) a door stopper
17. 17.🏚️ Three solid model towers are made of the same material. Tower A is 240 cm tall on a 30 cm wide base, tower B is 60 cm tall on a 10 cm base and tower C is 80 cm tall on a 20 cm base. Which is the easiest to tip over? (a) tower A (b) tower C (c) tower B
18. 18.💪 Two children push a box to the right, one with 100 N and the other with 60 N. What is the net (total) force on the box, in newtons?
19. 19.💪 Is pushing a trolley a push or a pull? (a) a push (b) a pull
20. 20.Which of these is made by engineers? (a) a rainbow (b) a banyan tree (c) a volcano (d) a satellite
21. 21.Which of these is a screw? (a) a window blind cord (b) a flagpole rope wheel (c) a bottle opener (d) a screw jack
22. 22.📐 On a plan, 1 cm stands for 5 m. A wall is 18 cm long on the plan. How long is the real wall, in metres?
23. 23.🪝 A wheel and axle is a big wheel fixed to … (a) a smaller rod (axle) (b) a flat ramp (c) a loose rope (d) a sharp wedge
24. 24.True or false: a fort gateway uses triangles. (a) False (b) True
25. 25.🛠️ Which of these is a problem an engineer could solve? (a) a road that floods (b) a boring story (c) a sad song (d) a lost cricket match
26. 26.♻️ A project report has 34 pages. How many sheets of paper are needed if it is printed on both sides of each sheet?
27. 27.📐 On a plan, 1 cm stands for 20 m. A wall is 3 cm long on the plan. How long is the real wall, in metres?
28. 28.⚖️ Along a straight bar, measured from the left end, the effort is at 30 cm, the fulcrum at 70 cm and the load at 40 cm. Which class of lever is it? (a) class 2 (b) class 1 (c) class 3
29. 29.🪝 A well winch has a handle (wheel) of radius 20 cm turning an axle of radius 4 cm. What is its mechanical advantage (MA)?
30. 30.⚙️ How many simple machines are there in the usual list? (a) 10 (b) 3 (c) 12 (d) 6
31. 31.🛞 More or less friction: a grippy rubber sole? (a) less friction (b) more friction
32. 32.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a glass sheet 3 N, a wooden plank 6 N, sandpaper 7 N, ice 2 N. Which surface gave the most friction? (a) sandpaper (b) ice (c) a wooden plank (d) a glass sheet
33. 33.💪 Which force is at work: a river flows downhill? (a) muscular force (b) gravity (c) magnetic force (d) friction
34. 34.🏚️ Does using a heavy roof make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
35. 35.What does the recorder do? (a) keeps the design notes (b) runs the tests (c) tracks what is used up (d) checks the goals are met
36. 36.🏚️ Three solid model towers are made of the same material. Tower A is 120 cm tall on a 40 cm wide base, tower B is 60 cm tall on a 10 cm base and tower C is 160 cm tall on a 40 cm base. Which is the easiest to tip over? (a) tower C (b) tower B (c) tower A
37. 37.Which job does a chemical engineer do? (a) plans a dam (b) designs power lines (c) designs school networks (d) makes medicines in bulk
38. 38.🪝 A winch has a wheel of radius 35 cm and an axle of radius 5 cm. What effort on the wheel lifts a 560 N bucket on the axle, in newtons? (ideal)
39. 39.🤝 A team plans for 40 minutes, builds for 25 minutes and then tests for 30 minutes, one after another. How many minutes is that in all?
40. 40.🤝 A team of 2 shares 10 equal jobs fairly. Each job takes 5 minutes. How many minutes does each person work?

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