Q13. | Which of the following instrument is used to convert mechanical energy into electrical energy ? |
Q14. | 'Cryometet' is |
Q15. | Instrument for measuring and recording short duration of time is? |
Q16. | Which of the following is wrongly matched |
Q17. | Apparatus for increasing the strength of electrical impulses is |
Q18. | The intensity of an earthquake is measured with a |