Do You Know The Devices Called Hydrophones?

10 Questions | Total Attempts: 105

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Do You Know The Devices Called Hydrophones?

A hydrophone is used to record sounds under the water. It is a form of microphone lowered in the water and sometimes kept in a waterproof container.


Questions and Answers
  • 1. 
    Hydro phones works on 
    • A. 

      Pressure changes

    • B. 

      Electric changes

    • C. 

      Water waves

    • D. 

      Temperature changes

  • 2. 
    A hydrophone can be less sensitive due to its
    • A. 

      Design

    • B. 

      Impedance

    • C. 

      Power

    • D. 

      Weight

  • 3. 
    A piezoelectric material in an hydrophone convert sound signals to 
    • A. 

      Mechanical signal

    • B. 

      Electric signal

    • C. 

      Light signal

    • D. 

      Chemical signal

  • 4. 
    Concerning a hydrophone, which of these is odd?
    • A. 

      Impedance

    • B. 

      Transducer

    • C. 

      Piezoelectricity

    • D. 

      Polaroids

  • 5. 
    The earliest adopted for hydrophones was 
    • A. 

      Circular oscillator

    • B. 

      Fessenden oscillator

    • C. 

      Turns oscillator

    • D. 

      Plate oscillator

  • 6. 
    Which of these pioneered research in hydrophones?
    • A. 

      Elon Rutherford

    • B. 

      Jean Rutherford

    • C. 

      Ernest Rutherford

    • D. 

      Albert Einstein

  • 7. 
    Hydrophones were used in which of these wars?
    • A. 

      World war 2

    • B. 

      World war 1

    • C. 

      War of Waterloo

    • D. 

      American civil war

  • 8. 
    Directional hydrophones increases sensitivity by using focused transducers and 
    • A. 

      Spherical transducers

    • B. 

      Ceramic transducers

    • C. 

      Transducers in array

    • D. 

      Transducers in containers

  • 9. 
    An array of hydrophones can be steered using
    • A. 

      Steering transducer

    • B. 

      Beamformer

    • C. 

      Line steer

    • D. 

      Array steer

  • 10. 
    The arrangement of hydrophones is either in two-dimensional or 
    • A. 

      One-dimensional

    • B. 

      Three-dimensional

    • C. 

      Four-dimensional

    • D. 

      Five-dimensional

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