Question: The tuned circuit of the oscillator in a simple A.M. transmitter uses a 100 µH inductor and 0.5 nF capacitor. If the oscillator output is modulated by audio frequencies upto 20 kHz, what is the range occupied by side frequencies?
Answer:
MCQ: The tuned circuit of the oscillator in a simple A.M. transmitter uses a 100 µH inductor and 0.5 nF capacitor. If the oscillator output is modulated by audio frequencies upto 20 kHz, what is the range occupied by side frequencies?
Correct Answer:
A. 702 to 722 kHz
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Related Questions
- 1. An A.M. broadcast radio transmitter radiates 10 kW when the modulation percentage is 60. What is the power of carrier?
- 2. In an amplitude modulated system, the total power radiated 600 W. the power of the carrier is 400 W. what is modulation index?
- 3. In an A.M. system, the modulated output voltage has E<sub>min</sub> = 15 V, the modulation index is :
- 4. 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:
- 5. 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:
- 6. The F.M telemetry as compared with A.M telemetry requires a channel that is
- 7. In F.M systems operate at
- 8. F.M systems as compared to A.M systems
- 9. 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
- 10. 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.
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