Waves, Energy, Machines and Power

1. For a pendulum bob, the position of its maximum kinetic energy has zero potential energy and the position of its maximum potential energy has zero kinetic energy?

Question 1 of 45

2. The ratio of Load to effort is?

Question 2 of 45

3. What is the SI UNIT of POWER?

Question 3 of 45

4. A body due its relative position or state possess which form of energy?

Question 4 of 45

5. What is the name of the device that enables work to be done more easily or conveniently?

Question 5 of 45

6. Mention 2 types of mechanical energy

Question 6 of 45

7. Which of the following is not a source of energy?

Question 7 of 45

8. The law of conservation of energy states also that the sum of kinetic energy and potential energy of a system is constant.

Question 8 of 45

9. How is the V.R of Gears calculated?

Question 9 of 45

10. The velocity ratio V.R of a block and tackle pulley system is equal to no. of strings supporting the Load?

Question 10 of 45

11. Name the form of energy which is contained in substances and be converted to heat by the process of oxidation (burning)

Question 11 of 45

12. Which of the following statement is CORRECT about efficiency?

Question 12 of 45

13. Which of the following statement is CORRECT about work?

Question 13 of 45

14. Energy spent is the product of force and distance i.e. F x D

Question 14 of 45

15. Which type of energy is exhaustible and once its material is used it cannot be retrieved?

Question 15 of 45

16. Mention any form of energy

Question 16 of 45

17. What is the name of the force applied to the machine?

Question 17 of 45

18. Which of the following is not a type of wave energy?

Question 18 of 45

19. What is the name of the force exerted by the machine?

Question 19 of 45

20. The velocity ratio V.R of a hydraulic machine is equal to R squared/ r squared

Question 20 of 45

21. Which form of energy is produced by vibrating objects or particles i.e. when a wave is plucked?

Question 21 of 45

22. Which of the following is a class of levers?

Question 22 of 45

23. POWER = work done/time taken

Question 23 of 45

24. Which among the following is not a type of pulley?

Question 24 of 45

25. How is the velocity ratio of a screw machine calculated?

Question 25 of 45

26. Which form of energy flows from one region to another due to temperature difference?

Question 26 of 45

27. Give the velocity ratio V.R of a block and tackle pulley?

Question 27 of 45

28. Which among the following is not among a SIMPLE MACHINE?

Question 28 of 45

29. Which type of energy which can be recycled or reused over and over again and it cannot be exhausted?

Question 29 of 45

30. Is the following formula correct 1Nm = 1 joule (J)?

Question 30 of 45

31. What is the formula of elastic potential energy?

Question 31 of 45

32. Efficiency is the ratio of work done by the load to the work done on the effort?

Question 32 of 45

33. Running water, a speeding bullet, wind or a moving car possess which form of energy?

Question 33 of 45

34. What is the formula of gravitational potential energy P.E?

Question 34 of 45

35. The distance between 2 successive threads in a screw is called?

Question 35 of 45

36. Give the velocity ratio V.R of a single movable pulley?

Question 36 of 45

37. Which simple machines depend on the principle of moments for them to work? (Clockwise moments=anticlockwise moments)

Question 37 of 45

38. Give the velocity ratio V.R of a single fixed pulley?

Question 38 of 45

39. Which of the following is not a non-renewable energy resource?

Question 39 of 45

40. The ratio of distance moved by effort to the distance moved by the load is?

Question 40 of 45

41. A compressed string or compressed air in an air bottle possess which form of energy?

Question 41 of 45

42. State the Law of conversation of energy?

Question 42 of 45

43. What is POWER?

Question 43 of 45

44. A body in motion possess which form of energy?

Question 44 of 45

45. Which of the following is the ODD one out?

Question 45 of 45