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ISRO EC 2019: Communications Booster Quiz 4
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Question 1
The frequency range for satellite communication is
Question 2
Baud rate defines
Question 3
An AM signal with a carrier of 1 kW has 200 W in each side band. The percentage of modulation is.
Question 4
In a PCM system, if the code word length is increased from 6 to 8 bits, the signal to quantization noise ratio improves by the factor
Question 5
Which of the following type of noise gains importance at low frequency?
Question 6
An AM modulator has output
The modulation efficiency is
The modulation efficiency is
Question 7
The equivalent noise temperature of a parametric amplifier is 40 K, if the ambient temperature is C then noise figure is
Question 8
A memory less source emits n symbols each with a probability p. The entropy of the source as a function of n
Question 9
The frequency range for satellite communication is
Question 10
An optical fibre communication system works on a wavelength of 1.3 μm. The number of subscribers it can feed, if a channel requires 20 kHz, is
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Dec 17ESE & GATE EC