What are the main devices present in a SONAR which is used to find the distance, direction and speed of underwater objects?

Question

Question

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RRB JE 29 May 2019 (Shift 2) CBT 1 Official Paper

Answer 1

The correct answer is Option 3

Key Points

The main devices present in a SONAR used to find the distance, direction, and speed of underwater objects are Transmitter and detector.
SONAR stands for Sound Navigation and Ranging.
The transmitter sends out sound waves, and the detector receives the waves reflected back from objects underwater.
By analyzing the time it takes for the sound waves to return, the distance to the object can be calculated.
SONAR is widely used in submarine navigation, underwater communication, and fishing.

Additional Information

There are two types of SONAR: Active SONAR and Passive SONAR.
Active SONAR emits sound waves and listens for echoes, while Passive SONAR listens for sound waves emitted by other objects.
SONAR technology is crucial for marine biology research, underwater surveillance, and oceanographic data collection.
Developed during World War II, SONAR has since become an essential tool in both military and civilian maritime operations.