Physics Practice: Machines (Mock Test 1 - Basic)
1. A machine is a device which helps us to:
2. Mechanical Advantage (M.A.) is defined as the ratio of:
3. Velocity Ratio (V.R.) is defined as the ratio of:
4. For an ideal machine, the efficiency ($\eta$) is always:
5. Which of the following represents the correct relationship between M.A., V.R., and $\eta$?
6. In a Class I lever, the ________ is located between the load and the effort.
7. A pair of scissors is an example of a:
8. In a Class II lever, the ________ is in the middle.
9. Which of the following acts as a speed multiplier?
10. The Velocity Ratio of a single fixed pulley is:
11. A single movable pulley is used to:
12. The Velocity Ratio of a block and tackle system with $n$ pulleys is:
13. In actual machines, M.A. is always less than V.R. because of:
14. A lever whose M.A. is always less than $1$ belongs to:
15. A single fixed pulley is used because it:
16. The M.A. of a Class II lever is always:
17. Work output is defined as:
18. A fire tongs is an example of which lever class?
19. If a machine has an efficiency of $80\%$, it means:
20. The Velocity Ratio of a single movable pulley is:
