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Electronics and Communication Engineering - Communication Systems

Exercise : Communication Systems - Section 10
6.
An antenna having a length of and grounded at one end is called
Marconi antenna
Yagi antenna
Turnstile antenna
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
7.
The noise figure of individual stages of a two stage amplifier is 2.03 and 1.54 respectively. If gain of first stage is 62, the overall noise figure is
2.03
2.055
3.05
6.05
Answer: Option
Explanation:
No answer description is available. Let's discuss.
8.
In figure (A) and (B)
A represents PCM and B represents AM
A represents FM and B represents AM
A represents AM and B represents FM
A represents PCM and B represents FM
Answer: Option
Explanation:
No answer description is available. Let's discuss.
9.
A trinitron colour picture tube uses
three electron guns
one electron gun
one electron gun with three separate in line cathodes
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
10.
For a three stage cascaded amplifier, having gains of G1, G2 and G3 and noise figures of F1, F2, F3 the overall noise figure
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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