NE-Echo sounder
NE-Echo Sounder Knowledge Quiz
Test your understanding of the NE-Echo sounder, an essential tool for navigating and determining underwater depth. This quiz covers key concepts, terminology, and the fun
Get ready to explore!
- 22 multiple-choice questions
- Improve your knowledge
- Great for maritime students and enthusiasts
The echo sounder allow to navigator to determine the depth under:
The water line
A) The hull
The main deck
The true depth is the depth between ………………….. and ……………………….
The water line
The main deck
The hull
The echo sounder is called also
The fathometer
The depth sounder
Both A & B
The source of the ultra sound signal is called:
The magnetron
The klystron
The transducer
The echo sounder uses the …………………… to operate
The acoustic signal
The radio wave
The electromagnetic wave
The acoustic signal is:
A sound signal
An electromagnetic wave
The lead line is:
Direct depth measurement
Indirect depth measurement
The echo sounder is:
Direct depth measurement
Indirect depth measurement
The oldest navigational instrument is:
The echo sounder
The lead line
The RADAR
The lead line consists of:
Lead masses, rope and marker
Rope
Marker
It is recommended to use the lead line in:
In the stern of the vessel
The bow of the vessel
It is recommended to use the lead line:
A) The ship is stopped or sailing with a weak speed
B) The ship is sailing with a high speed
Only in the shallow water
The echo sounder have to send a ………………………. To determine the shortest depth:
Horizontal signal
Vertical signal
Inclined signal
The oscillator in the echo sounder Generate an:
electric signal
Acoustic signal
Electromagnetic signal
The oscillator is called also:
The transducer
The pulse generator
The transducer emitter converts:
The acoustic signal into sound signal
The electric signal into sound signal
The electric signal into mechanical vibration
Both b & c
The transducer receiver converts
The acoustic signal into electric signal
The electric signal into sound signal
The electric signal into mechanical vibration
Both a & c
The amplifier of the echo sounder
Amplify the acoustic signal
Amplify the weak electric signal coming from the transducer receiver
Both a & b
The recorder of the echo sounder:
Registers the data obtained
Converts the electric signal
Converts the acoustic signal
The echo sounder diagram consists
Transducer, recorder, amplifier and magnetron
Recorder, transducer emitter, transducer receiver, amplifier and recorder
Recorder, antenna, amplifier and recorder
It is recommended to switch on the echo sounder to prevent
Vessel beaching
Vessel grounding
Target above the water line
The vessel grounding is an:
Intentional act
Unintentional act
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