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Electronics and Communication Engineering - Communication Systems

Exercise : Communication Systems - Section 19
26.
In a colour TV receiver, PAL Dematrix consists of
chroma detector to separate the three primary colours
delay line and PAL matrix to give U and V signals
delay line and PAL matrix to give RGB colours
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
27.
A broadcast radio transmitter radiates 5 kW when the modulation percentage is 60. How much of this is carrier power?
6.66 kW
5 kW
4.9 kW
4.23 kW
Answer: Option
Explanation:
No answer description is available. Let's discuss.
28.
For a resistance of about 15 kΩ operating in a frequency range of a few MHz, the noise voltage is in the range of
a few μV
about 100 μV
a few μV
a few volts
Answer: Option
Explanation:
No answer description is available. Let's discuss.
29.
In a 50 cm TV tube, a path difference of 2 km between direct wave and interfering wave would mean a displacement between main image and ghost image equal to
0.3 cm
3 cm
6 cm
9 cm
Answer: Option
Explanation:
No answer description is available. Let's discuss.
30.
In a colour TV receiver, the sound intercarrier IF is generated in
video detector
video IF amplifier
tuner mixer stage
limiter stage
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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