Question: For an F.M wave represented by the voltage equationE = 8 sin (6× 10<sup>8</sup>t + 5 sin 4× 10<sup>4</sup>t) VThe carrier and modulating frequencies are:
Answer:
MCQ: For an F.M wave represented by the voltage equationE = 8 sin (6× 10<sup>8</sup>t + 5 sin 4× 10<sup>4</sup>t) VThe carrier and modulating frequencies are:
Correct Answer:
A. 127.3 MHz, 9.5 kHz
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Related Questions
- 1. For an F.M wave represented by the voltage equationE = 8 sin (6× 10<sup>8</sup>t + 5 sin 4× 10<sup>4</sup>t) VThe modulation index and the maximum deviation are:
- 2. The F.M telemetry as compared with A.M telemetry requires a channel that is
- 3. In F.M systems operate at
- 4. F.M systems as compared to A.M systems
- 5. A typical telemetry carrier frequency 230 MHz may be used with a bandwidth of ±320kHz using A.M. a data with a bandwidth of 4 kHz has to be transmitted. Subcarrier having a frequency 32 kHz and 44 kHz are modulated. The frequency bands utilized are
- 6. Twenty –one data channels, with subcarrier center frequencies ranging from 400Hz to 165 kHz have been designed for telemetry use. All have a frequency deviation of ± 7.5%. if the index of modulation is 5, the intelligence bandwidth of channel 1 for a center frequency of 3000 Hz is____________Assume the frequency multiplexing has been used.
- 7. In frequency multiplexing systems, if the subcarrier frequency deviations are proportional to the center frequency , the scheme is referred to having:
- 8. Time division multiplexing requires
- 9. Time division multiplexing is used when
- 10. Modem is an acronym of
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