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Electronics and Communication Engineering - Communication Systems

Exercise : Communication Systems - Section 19
46.
In AM increased depth of modulation increases __________ and in FM with increased depth of modulation __________ increases.
total transmitted power, bandwidth
bandwidth, bandwidth
bandwidth, total transmitted power
total transmitted power, sideband power
Answer: Option
Explanation:
No answer description is available. Let's discuss.
47.
In a DM system, the granular noise occurs when modulating signal
decrease Rapidly
increase
has high frequency component
change within step size
Answer: Option
Explanation:
No answer description is available. Let's discuss.
48.
The figure shows a simple detector circuit for amplitude modulated wave v(t) = (1 + m cos ωmt) cost ωct. If the detector is to follow the envelope of modulated wave at all times the extent of modulation m must be less than or equal to m0 where m0 is given by equation
Answer: Option
Explanation:
No answer description is available. Let's discuss.
49.
Huffman code is also known as redundancy code
True
false
in some cases
depend upon efficiency
Answer: Option
Explanation:
No answer description is available. Let's discuss.
50.
If each frequency component of f(t) is shifted by p/2, the resulting signal is
Hilbert transform of f(t)
Inverse Hilbert transform of f(t)
Laplace transform of f(t)
Fourier transform of f(t)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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