Analog Communication MCQs
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Analog Communication MCQs
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25 Questions

1. Analog signal may be converted into digital signal by
2. Limitations of Frequency discrimination method are:
3. Armstrong method is used for the generation of
4. What is the maximum frequency deviation allowed in commercial FM broadcasting?
5. Cross talk is –
6. FM is disadvantageous over AM signal because
7. If modulation index is greater than 1
8. What is the maximum modulating frequency allowed in commercial FM broadcastings?
9. Drawbacks of Tuned Radio Receiver are
10. What is the effect on the deviation d of an FM signal when it is passed through a mixer?
11. The increase or decrease in the frequency around the carrier frequency is termed as
12. Disadvantages of FM over AM are
13. In an Amplitude Modulation
14. In Automatic gain control of the AM receiver
15. Vestigial side band signals are detected by
16. In Amplitude Demodulation, the condition which the load resistor R must satisfy to discharge capacitor C slowly between the positive peaks of the carrier wave so that the capacitor voltage will not discharge at the maximum rate of change of the modulating wave (W is message bandwidth and ω is carrier frequency, in rad/sec) is
17. When AM signal is of 25KHz, calculate the number of channels required in Medium Frequency (MF) band of 300KHz-3000KHz.
18. The ratio of maximum peak frequency deviation and the maximum modulating signal frequency is termed as
19. Carrier swing is defined as
20. In Frequency Modulation –
21. LSB (Lower Side Band) is the band of frequency
22. Synchronous detection means
23. In the TV receivers, the device used for tuning the receiver to the incoming signal is
24. Calculate the bandwidth occupied by a DSB signal when the modulating frequency lies in the range from 100 Hz to 10KHz.
25. The total power in an Amplitude Modulated signal if the carrier of an AM transmitter is 800 W and it is modulated 50 percent.

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