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GATE EC 2022: Communication System Quiz 10
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Question 1
The channel capacity of the noiseless discrete channel illustrated below is.
Question 2
The PDF of a random variable is fx(x) = ke–bx for x > 0
= 0 for x < 0, and k, b > a
Then k = bP, what is value of P?
Question 3
Assume a binary bit stream is to be modulated on an RF carrier. The baseband bit stream has a data rate of 1 Mbits/sec. Let BPSK signaling scheme is used.
If simple rectangular pulses are used, then the first zero crossing bandwidth of the RF spectrum is --------MHz.
Question 4
The tracking error at different input carrier frequencies of an AM super heterodyne receiver, operating in the range (550 + 1650) KHz is shown in :
The intermediate frequency of receiver is 450 KHz. If the maximum frequency of modulating signal is 7 KHz, find minimum bandwidth (in kHz) required by IF Amplifier of receiver
Question 5
An AM signal is represented as 
Where
with regards to this signal which of the following statement is true :
1) The spectrum consists of 8 spectral component.
2) The bandwidth of the signal is 20 KHz
3) The total modulated index is 0.707
4) The modulation efficiency is 5
Where
with regards to this signal which of the following statement is true :
1) The spectrum consists of 8 spectral component.
2) The bandwidth of the signal is 20 KHz
3) The total modulated index is 0.707
4) The modulation efficiency is 5
Question 6
SNR of a telephone line is 40 dB. In order to carry 256 kbps data, the minimum bandwidth required is ________ kHz.
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Jan 12ESE & GATE EC
