Gibilisco - Transducers, Sensors, Location, And Navigation

20 Questions

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Gibilisco - Transducers, Sensors, Location, And Navigation

For those of you who love all things physics and mathematics especially graph that measures the strength of materials then this is the quiz for you. If you are prepared to test your knowledge try it out.


Questions and Answers
  • 1. 
    Which of the following devices would most likely be used for adjusting the frequency settingof a digital radio transmitter or receiver?
    • A. 

      A piezoelectric transducer

    • B. 

      A dynamic transducer

    • C. 

      An optical shaft encoder

    • D. 

      A capacitive proximity sensor

  • 2. 
    Collimation of IR rays can be done by means of
    • A. 

      An ordinary lens.

    • B. 

      A selsyn.

    • C. 

      A log polar transform system.

    • D. 

      Any of the above.

  • 3. 
    A computer map
    • A. 

      Can help a robot find its way around.

    • B. 

      Requires the use of IR beacons.

    • C. 

      Is generated using optical encoders.

    • D. 

      Requires the use of a low-frequency RDF loop antenna.

  • 4. 
    The distance of a target from a radar station is called
    • A. 

      The resolution.

    • B. 

      The azimuth.

    • C. 

      The range.

    • D. 

      The transform.

  • 5. 
    Which of the following devices is best for use as an ultrasonic pickup?
    • A. 

      A back-pressure transducer

    • B. 

      A piezoelectric transducer

    • C. 

      An elastomer pressure transducer

    • D. 

      A capacitive pressure transducer

  • 6. 
    What do loran and the GPS have in common?
    • A. 

      They both operate using IR energy.

    • B. 

      They both employ loop antennas at the transmitting and receiving stations.

    • C. 

      They both involve measurement of azimuth angles to determine the location of a transmitter.

    • D. 

      They both involve measurement of distances to determine the location of a receiver.

  • 7. 
    A bright spot close to, and directly to the left of, the center of a conventional radar displayindicates the presence of a target
    • A. 

      Right over the observing station.

    • B. 

      At close range, west of the observing station.

    • C. 

      At close range, south of the observing station.

    • D. 

      Far from the observing station, azimuth unknown.

  • 8. 
    Which of the following systems enables a vessel to navigate entirely from its own frame ofreference, without the need for any electronic devices external to itself?
    • A. 

      An epipolar navigation system

    • B. 

      The GPS

    • C. 

      Loran

    • D. 

      Forget it! There is no such thing.

  • 9. 
    Ultrasonic waves travel through a vacuum
    • A. 

      At the same speed as they travel in air.

    • B. 

      At a slightly higher speed than they travel in air.

    • C. 

      At a slightly lower speed than they travel in air.

    • D. 

      Forget it! No form of acoustic wave can travel through a vacuum.

  • 10. 
    Which of the following devices or techniques makes use of artificially generated magneticfields to facilitate location within a work environment?
    • A. 

      A dynamic transducer

    • B. 

      Epipolar navigation

    • C. 

      Capacitive proximity sensing

    • D. 

      None of the above

  • 11. 
    Which of the following is not an example of a transducer?
    • A. 

      A microphone

    • B. 

      A radio antenna

    • C. 

      A headset

    • D. 

      All of the above are examples of transducers.

  • 12. 
    A foam-like material, having a resistance that varies depending on how much it iscompressed, is known as
    • A. 

      An elastomer.

    • B. 

      A fluxgate magnetometer.

    • C. 

      A piezoelectric substance.

    • D. 

      None of the above.

  • 13. 
    A stepper motor
    • A. 

      Has torque that increases as its speed increases.

    • B. 

      Resists applied torque when stopped with current going through its coils.

    • C. 

      Has turning power that does not depend on the speed.

    • D. 

      Is easily fooled by body capacitance.

  • 14. 
    A permanent magnet is a key component of
    • A. 

      An elastomer pressure sensor.

    • B. 

      A capacitive pressure sensor.

    • C. 

      A dynamic microphone.

    • D. 

      A piezoelectric microphone.

  • 15. 
    An electric motor is an example of
    • A. 

      An electromechanical transducer.

    • B. 

      A pressure sensor.

    • C. 

      A proximity sensor.

    • D. 

      A texture sensor.

  • 16. 
    A capacitive proximity sensor should not be expected to detect the presence of
    • A. 

      A wooden chair.

    • B. 

      A metal desk.

    • C. 

      A large dog.

    • D. 

      A steel post.

  • 17. 
    A well-designed photoelectric proximity sensor
    • A. 

      Is easily fooled by loud noises.

    • B. 

      Cannot detect the presence of objects that reflect light.

    • C. 

      Is sensitive to magnetic fields.

    • D. 

      Is not easily fooled by stray sources of light.

  • 18. 
    An acoustic transducer can translate an ac electrical signal into
    • A. 

      Visible light.

    • B. 

      Sound or ultrasound.

    • C. 

      A dc electrical signal.

    • D. 

      Mechanical torque.

  • 19. 
    Body capacitance can be a problem with
    • A. 

      Electrostatic transducers.

    • B. 

      Elastomer pressure sensors.

    • C. 

      Capacitive pressure sensors.

    • D. 

      All of the above.

  • 20. 
    Which of the following devices can be used to limit the torque or force applied by anelectromechanical device such as a robot?
    • A. 

      A back-pressure sensor

    • B. 

      A capacitive proximity sensor

    • C. 

      A dynamic transducer

    • D. 

      An optical shaft encoder