Electronics and Communication Engineering - Communication Systems
Exercise : Communication Systems - Section 7
- Communication Systems - Section 13
- Communication Systems - Section 25
- Communication Systems - Section 24
- Communication Systems - Section 23
- Communication Systems - Section 22
- Communication Systems - Section 21
- Communication Systems - Section 20
- Communication Systems - Section 19
- Communication Systems - Section 18
- Communication Systems - Section 17
- Communication Systems - Section 16
- Communication Systems - Section 15
- Communication Systems - Section 14
- Communication Systems - Section 1
- Communication Systems - Section 12
- Communication Systems - Section 11
- Communication Systems - Section 10
- Communication Systems - Section 9
- Communication Systems - Section 8
- Communication Systems - Section 7
- Communication Systems - Section 6
- Communication Systems - Section 5
- Communication Systems - Section 4
- Communication Systems - Section 3
- Communication Systems - Section 2
11.
Which of the following antennas is circularly polarized?
Answer: Option
Explanation:
The helical antenna is circularly polarized, i.e., its polarization is evenly divided between vertical and horizontal components.
12.
In colour TV system the colour sub carrier frequency is 4.43 MHz.
Answer: Option
Explanation:
Video monitor does not have RF tuner and IF amplifier stages.
13.
A transmitter power of 5 W is increased by 20 dB. The effective radiated power is
Answer: Option
Explanation:
or P = 500 W.
14.
The percentage saving in power of 100% modulated suppressed carrier AM signal is
Answer: Option
Explanation:
m = 1,
if carrier is suppressed then
.
15.
The maximum distance between television transmission and receiving antennas for reasonably good reception should be
Answer: Option
Explanation:
Television transmission is governed by line of sight distance which is about 100 km or less.
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