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RRB Junior Engineer / DMS / CMA 2019 · Question 105 of 3719

Which device converts sound waves to electrical signals?

Physics - Sound

  1. Aa. Loud speaker
  2. Bb. Headphone
  3. Cc. MicrophoneCorrect
  4. Dd. Amplifier

Answer: C. c. Microphone

Explanation

Microphone: Converts a sound wave into an electrical signal. Loudspeaker: Converts an electrical signal into sound waves. Headphone: Converts electrical energy into mechanical energy to produce sound. Amplifier: • It is used to change the amplitude of a signal. • The purpose of an amplifier is to produce an output signal larger than that of the input signal. • It is used to convert Direct current into Alternate Current.

Source: RRB JE 2019 CBT-1 (24-May-2019 Shift-1) — ixambee compilation with answer key and solutions · reliable-secondary

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