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Questions Bank (1278438 total)
In a Frequency division Multiplexing system having four frequency bands, if the frequency bands are of 200 kHz bandwidth separated by 15kHz guard bands, calculate the minimum capacity of the communication channel.
A message signal with a peak voltage of 40 mV at a frequency of 600 Hz is applied to an FM generator circuit. If the circuit has frequency sensitivity, = 800 Hz /20mV, calculate the peak frequency deviation.
Why is it important to know the peak deviation constant,
What is the significance of the frequency sensitivity factor,
What is the method with which a baseband signal can be transported to RF frequencies?
In envelope detection of an amplitude-modulated signal, what is the danger of making the lowpass filters’ cutoff frequency too high a value?
Consider a signal that has its highest frequency component at 8,000 Hz. What is the minimum rate that the signal should be sampled by?
How is normalised frequency defined?
If a signal is sampled at 20kHz, what is the value of Nyquist?