Q7. | Which of the following instrument is used to change Alternating current into Direct current ? |
Q8. | Which Instrument used to measure the rainfall of a given area ? |
Q9. | Instrument used for measuring pressure, sensitivity to pressure, compressibility is |
Q10. | Which of the following is wrongly matched ? |
Q11. | To examine internal parts of the body which instrument is used |
Q12. | Electroencephalograph (EEC) is used to measure |