Electronic Devices and Circuit Theory-Communications

Electronic Devices and Circuit Theory-Communications
11. The mixer takes the RF signal along with the audio signal to produce the IF signal.
  • TRUE
  • FALSE
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12. A balanced modulator is used in standard AM to obtain the sum and difference frequencies.
  • TRUE
  • FALSE
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13. The demodulator recovers the audio signal from the IF output.
  • TRUE
  • FALSE
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14. Selectivity in a receiver is provided by the resonant circuits of the IF section.
  • TRUE
  • FALSE
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15. An AM signal is made up of a carrier, an upper-side frequency, and a lower-side frequency.
  • TRUE
  • FALSE
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16. Frequency modulation is achieved by varying the frequency of an oscillator with a modulating signal.
  • TRUE
  • FALSE
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17. Amplitude modulation is the process of varying the radio frequency with the modulating frequency.
  • TRUE
  • FALSE
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Electronics
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