Ch 15. Communication Systems Flashcards
1
Q
Waves of UHF frequency are generally transmitted as
A
Space Waves
2
Q
Which range of frequency is used in TV transmission?
A
30 MHz-300 MHz
3
Q
Laser action needs
A
Number inversion
4
Q
Which of the following unit is correct to measure attenuation?
A
5
Q
Meaning of FAX is
A
6
Q
The height of a TV transmission tower at any place on the surface of the Earth is 245m. The maximum distance up to which transmission of tower will reach is
A
7
Q
Optical fiber communication is based on which of the following phenomena
A
8
Q
Which frequency range is used for TV transmission?
A
9
Q
The modulation index in amplitude modulation is
A
