KCET SERIES Physics
Communication Systems
5 previous year questions.
Volume: 5 Ques
Yield: Medium
High-Yield Trend
1
2019 1
2018 1
2017 1
2016 1
2015 Chapter Questions 5 MCQs
01
PYQ 2015
medium
physics ID: kcet-201
Amplitude modulation has
1
one carrier with two side band frequencies
2
one carrier
3
one carrier with infinite frequencies
4
one carrier with high frequency
02
PYQ 2016
easy
physics ID: kcet-201
The process of superimposing message signal on high frequency carrier wave is called
1
Amplification
2
Demodulation
3
Transmission
4
Modulation
03
PYQ 2017
medium
physics ID: kcet-201
A basic communication system consists of (i) transmitter (ii) information source (III) user of information
(iv) channel (v) receiver
1
ii, i, iv, v and iii
2
i, ii, iii, iv and v
3
ii, v, i, iv and iii
4
ii, iv, i, iii and v
04
PYQ 2018
medium
physics ID: kcet-201
The radius of the Earth is 6400 km. If the height of an antenna is 500 m, then its range is
1
800 km
2
100 km
3
80 km
4
10 km
05
PYQ 2019
medium
physics ID: kcet-201
An antenna uses electromagnetic waves of frequency 5 MHz. For proper working, the size of the antenna should be
1
15 km
2
15 m
3
3 km
4
300 m