Mechanical concepts: levers, simple machines, basic mechanical principles - Question Bank
1. What is the fundamental concept behind all simple machines?
2. A pair of tweezers is an example of which class of lever?
3. Which of the following is a characteristic of a third-class lever?
4. What is the mechanical advantage of a hydraulic system?
5. A hydraulic jack uses which principle to lift heavy loads?
6. In a hydraulic system, the pressure applied to an enclosed fluid is transmitted:
7. What is the primary advantage of using a worm gear mechanism?
8. When two gears mesh, if the driving gear has more teeth than the driven gear, the driven gear will:
9. A system of gears is an example of:
10. What is the relationship between mechanical advantage (MA), effort (E), and load (L) in an ideal machine?
11. The principle of work states that in an ideal machine:
12. Which of these is NOT a simple machine?
13. When using a differential pulley system (also known as a Weston differential pulley), the mechanical advantage is:
14. What is the primary disadvantage of a third-class lever?
15. In a third-class lever, the effort is always applied:
16. A knife blade is a type of:
17. The pitch of a screw is defined as:
18. What is the mechanical advantage of a system with multiple pulleys?
19. Which simple machine is used to reduce friction when moving heavy objects?
20. In a second-class lever, the load is always between the effort and the fulcrum. This results in a mechanical advantage that is:
21. A pair of scissors is an example of a:
22. If the effort arm is longer than the load arm in a first-class lever, the lever provides:
23. What is the unit of moment of force?
24. Moment of a force is defined as the product of:
25. Which mechanical principle states that the sum of the clockwise moments about a point is equal to the sum of the anticlockwise moments about the same point?
26. A doorknob is an example of which simple machine?
27. In a wheel and axle system, the wheel and axle rotate:
28. What is the purpose of a wheel and axle?
29. Which tool is a common example of a wedge used for splitting wood?
30. A wedge is a simple machine that can be described as:
31. Which of these is a type of screw thread?
32. A screw is often used to:
33. What simple machine is essentially an inclined plane wrapped around a cylinder?
34. A ramp is a practical example of which simple machine?
35. Using an inclined plane to move a heavy object up to a certain height requires:
36. What is an inclined plane?
37. A block and tackle system is a type of:
38. In an ideal pulley system, the work input is equal to the work output. This illustrates the principle of:
39. What is the primary advantage of using a system of movable pulleys?
40. A single fixed pulley has a mechanical advantage of:
41. Which simple machine consists of a grooved wheel with a rope or cable running around it?
42. In a first-class lever, if the effort arm is longer than the load arm, the mechanical advantage will be:
43. What is the term for the point about which a lever pivots?
44. A lever with a mechanical advantage of less than 1 is used to:
45. If a lever has a mechanical advantage greater than 1, it means:
46. What is the mechanical advantage (MA) of a lever defined as?
47. Which of the following is a third-class lever?
48. A wheelbarrow is an example of which class of lever?
49. In which class of lever is the fulcrum located between the effort and the load?
50. What is the primary function of a lever?