Vibration Isolators and Resilient Materials Quiz
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Questions and Answers

What is the purpose of a continuous NIC (C-NIC) measurement in acoustic control?

  • To assess the frequency of noise at the source
  • To evaluate transmission conditions through a barrier between two spaces in real-time (correct)
  • To measure the reverberation time in a room
  • To compare noise levels inside and outside a building

    • What can barriers, screens, or deflectors in the noise path help achieve?

  • Reduce high-frequency noise more than low-frequency noise (correct)
  • Increase the transmission of noise
  • Have no impact on noise reduction
  • Only reduce low-frequency noise

    • How does lining the inside surfaces of ducts, pipes chases, or electrical channels with sound-absorbing materials affect noise transmission?

  • Has no effect on noise transmission
  • Reduces noise transmission at high frequencies only
  • Reduces noise transmission effectively (correct)
  • Increases noise transmission

    • How does the height of a barrier affect its effectiveness in reducing noise transmission?

    <p>The taller the barrier, the more effective it is</p> Signup and view all the answers

    What aspect is important for reducing middle and high frequency noise according to the text?

    <p>Acoustical treatment</p> Signup and view all the answers

    What is a possible application of acoustic absorption devices/lining according to the text?

    <p>Reduction of noise transmitted through ducts and pipes</p> Signup and view all the answers

    In addition to machine noise reduction, what other benefit can acoustical treatment provide?

    <p>Reduction of built-up noise level away from the source</p> Signup and view all the answers

    What is the main advantage of using deflectors as a means of noise reduction?

    <p>Reducing low-frequency noise more effectively</p> Signup and view all the answers

    How do resilient materials contribute to acoustic control according to the text?

    <p>By reducing noise transmission effectively</p> Signup and view all the answers

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