Question

4. Write short notes on -
A. ECG B.SONAR​

Answer 1

The electrocardiogram (ECG or EKG) is a diagnostic tool that is routinely used to assess the electrical and muscular functions of the heart. While it is a relatively simple test to perform, the interpretation of the ECG tracing requires significant amounts of training. Numerous textbooks are devoted to the subject.

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Answer 2

Question

• 4. Write short notes on -
• A. ECG
• B.SONAR

Answer

• ECG
• An electrocardiogram (ECG or EKG) is a record of the electrical activity of the heart over a period of time. It was invented by Willem Einthoven. It is done by electrodes attached to the outer surface of the skin and recorded by a device outside the body. An electrocardiogram is used to monitor your heart.

• SONAR
• SONAR is a Sound Navigation & Ranging technique which used for mainly in under water navigation in Submarines . Sound waves detect the object under & on the water during navigation for safe sailing . Its detect the echo of any sound and respond it . Sound waves travel far than light or radio waves in water.