Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 631 · 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.⚖️ Turning effect = force × … (a) time taken (b) colour of bar (c) mass of fulcrum (d) distance from fulcrum
2. 2.🪢 A sign weighing 160 N hangs from 4 identical vertical ropes that share the load equally. What is the tension in each rope, in newtons?
3. 3.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) none (c) two (d) one
4. 4.True or false: “spend at most ₹100” is a constraint (a limit). (a) True (b) False
5. 5.🔍 Which is the odd one out? (a) a temple column (b) a crane lifting cable (c) a squeezed spring (d) a bridge pier
6. 6.True or false: a tall bridge tower is in compression (pushed). (a) True (b) False
7. 7.♻️ Reduce, reuse or recycle: turn plastic into tiles? (a) reduce (b) reuse (c) recycle
8. 8.⚖️ A seesaw balances. Asha (? N) sits 3 m from the pivot on one side; Kabir (450 N) sits 4 m from the pivot on the other side. What is the missing weight in newtons?
9. 9.Which of these is an inclined plane? (a) a playground slide (b) a well-bucket rope wheel (c) a claw hammer on a nail (d) a water tap handle
10. 10.💪 A box weighs 140 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
11. 11.🤝 A teammate’s idea seems odd. What should you do first? (a) listen and ask why (b) walk away (c) laugh at it (d) ignore it
12. 12.🦺 In the workshop, is it safe to touch a hot glue tip? (a) safe (b) not safe
13. 13.True or false: to check it against goals is the Create step. (a) False (b) True
14. 14.🪝 A bucket weighing 380 N is lifted with a single fixed pulley at the top of a well. What effort is needed, in newtons? (ideal pulley, no friction)
15. 15.Which job does a computer engineer do? (a) designs a metro tunnel (b) designs school networks (c) designs aeroplane wings (d) makes medicines in bulk
16. 16.🧑‍🔧 Which branch of engineering designs machines with moving parts? (a) chemical (b) biomedical (c) mechanical (d) civil
17. 17.💪 In which unit do we measure force? (a) newton (N) (b) litre (L) (c) second (s) (d) metre (m)
18. 18.🪝 Fixed or movable pulley: which one hangs on the rope loop? (a) a movable pulley (b) a fixed pulley
19. 19.⚙️ Which simple machine is a nutcracker? (a) wheel and axle (b) lever (c) pulley (d) screw
20. 20.⚙️ Which simple machine is a truck loading ramp? (a) wheel and axle (b) inclined plane (c) screw (d) lever
21. 21.True or false: a wheel on ball bearings gives more friction. (a) False (b) True
22. 22.Which job is a protractor for? (a) cut a wooden plank (b) turn a screw (c) smooth a rough edge (d) measure an angle
23. 23.🔍 Which is the odd one out? (a) stacking loose bricks (b) using a light roof (c) using a heavy roof (d) raising heavy tanks high
24. 24.True or false: a civil engineer plans a dam. (a) True (b) False
25. 25.⚙️ Which simple machine is a screw jack? (a) pulley (b) screw (c) lever (d) wheel and axle
26. 26.💪 A cart is pulled to the right with 65 N and to the left with 50 N. Which way does the net force act? (a) to the left (b) to the right (c) no net force
27. 27.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a wooden plank 4 N, a carpet 5 N, sandpaper 8 N, a glass sheet 3 N. How many newtons more were needed on sandpaper than on a glass sheet?
28. 28.True or false: to list the materials is the Plan step. (a) True (b) False
29. 29.What does the materials manager do? (a) checks the goals are met (b) tracks what is used up (c) runs the tests (d) shares out the jobs
30. 30.💪 A bag has a mass of 9 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
31. 31.Which of these is recycle (make new things)? (a) melt glass into new jars (b) print on both sides (c) fix a dripping tap (d) plant in old tyres
32. 32.📋 Criteria are … (a) the limits on money (b) the tools you use (c) goals a design must meet (d) the team names
33. 33.🏋️ A force of 500 N pushes a cart 6 m along the floor. How much work is done, in joules?
34. 34.🏋️ A force of 420 N pushes a cart 2 m along the floor. How much work is done, in joules?
35. 35.True or false: to cut towards your hand is not safe. (a) False (b) True
36. 36.📋 Constraint: the tower must be no taller than 90 cm. The team’s tower is 84 cm tall. Is it within the constraint? (a) No (b) Yes
37. 37.True or false: to tighten a nut, use a spirit level. (a) False (b) True
38. 38.🧱 Which material is best for a cooking pot handle? (a) wood or plastic (b) copper (c) aluminium (d) iron
39. 39.True or false: a tent guy rope is in tension (pulled). (a) False (b) True
40. 40.🧱 Is glass an electrical conductor or an insulator? (a) a conductor (b) an insulator

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