Dynamics of Machinary MCQs with answers Page - 17

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Q. It is an audio transducer that converts acoustic pressure in air into its equivalent electrical impulses

  • (A) Loudspeaker
  • (B) Amplifier
  • (C) Baffle
  • (D) Microphone

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Q. _________ is a pressure type microphone with permanent coil as a transducing element.

  • (A) Dynamic
  • (B) Condenser
  • (C) Magnetic
  • (D) Carbon

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Q. A capacitor stores energy in the form of an electrostatic field is a ______.

  • (A) Dynamic Microphone
  • (B) Condenser Microphone
  • (C) Magnetic Microphone
  • (D) Carbon Microphone

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Q. A microphone that uses the piezoelectric effect

  • (A) Dynamic
  • (B) Condenser
  • (C) Crystal
  • (D) Carbon

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Q. It describes the output of a microphone over a range of frequencies.

  • (A) Directivity
  • (B) Sensitivity
  • (C) Frequency response
  • (D) All of the above

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Q. The most important terms that are used to describe the sound field around a sound emitting object

  • (A) Far , Near Field
  • (B) Free ,Diffuse Field
  • (C) A and B both
  • (D) None of the above

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Q. The sound waves behave in a much more complex fashion, and there is no fixed relationship between ________________.

  • (A) Sound pressure
  • (B) pressure and distance
  • (C) Sound energy
  • (D) Sound intensity

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Q. The sound far field is beginning at a distance of ____________ .

  • (A) pressure and distance
  • (B) Sound energy
  • (C) Sound pressure
  • (D) 2 wavelengths away from the sound source

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Q. Measurement of noise can be made in following environment ____________

  • (A) Anechoic Chamber
  • (B) Semi - anechoic Chamber
  • (C) Reverberant Chamber
  • (D) All the above

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Q. Seismometer can be used to measure acceleration of any instrument only if _____

  • (A) it's natural frequency is high
  • (B) it generates output signal which is proportional to relative acceleration of the vibrating object
  • (C) both a. and b.
  • (D) none of the above

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