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Electronics and Communication Engineering - Communication Systems

Exercise : Communication Systems - Section 21
21.
How can the quantizing noise be reduced?
By using de-emphasis circuit
By using RF amplifier in the receiver
By increasing the number of quantization levels
By sending sloping pulses
Answer: Option
Explanation:
No answer description is available. Let's discuss.
22.
Audio systems use transverse recording.
True
False
Answer: Option
Explanation:
No answer description is available. Let's discuss.
23.
In a CD player the laser uses
silicon semiconductor
silicon/germanium semiconductor
aluminium gallium arsenide semiconductor
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
24.
Leak type bias is used in a plate-modulated class C amplifier to
prevent tuned circuit damping
prevent over modulation
increase the bandwidth
prevent excessive grid current
Answer: Option
Explanation:
No answer description is available. Let's discuss.
25.
FM broadcast is done using
medium waves
short waves
VHF and UHF waves
microwaves
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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