Sponsor Area
Communication Systems
Question
A sound absorber attenuates the sound level by 20 dB. The intensity decreases by a factor of
-
1000
-
10000
-
10
-
100
Solution
D.
100
Some More Questions From Communication Systems Chapter
Give three reasons why the modulation of a message signal is necessary for long-distance transmission.
Show graphically an audio signal, a carrier wave and an amplitude modulated wave.
In a full wave rectifier circuit operating from 50 Hz mains frequency, the fundamental frequency in the ripple would be
A hemisphere is positively charged uniformly. The electric field at a point on a diameter away from the centre is directed
What maximum frequency can be reflected from ionosphere?
Sponsor Area
Mock Test Series
Mock Test Series