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Consumer Electronics by S. P. Bali

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Multiple Choice Questions

  1. Concave surfaces may be provided to act as
    1. absorbers
    2. reflectors
    3. insulators
    4. none of the above
  2. Convex surfaces may be used to
    1. absorb the sound
    2. spread the sound
    3. concentrate the sound
    4. none of the above
  3. The coefficient of absorption of an open window is taken as
    1. 1
    2. 2
    3. images
    4. images
  4. Rooms and enclosures may have
    1. a single resonance
    2. several resonances
    3. two resonances
    4. none of the above
  5. Rooms vibrate and respond most readily to
    1. low frequencies
    2. high frequencies
    3. mid frequencies
    4. none of the above
  6. To make a truly objective listening ...

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