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# GATE 2023 Communication System Quiz 33

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Question 1

A superhetrodyne receiver is to operate in 450kHz – 1550kHz, with intermediate frequency 450 kHz. The value of is

Question 2

A PCM system uses a uniform quantizer followed by a 5-bit binary encoder. The bit rate is . The maximum message bandwidth for which the system operates satisfactorily is

Question 3

A signal is sampled at 8 kHz and is quantized using 8 bit uniform quantizer. Assuming SNRq for a sinusoidal signal, the correct statement for PCM signal with a bit rate of R is

Question 4

if an FM and PM system are employed with same output signal to noise ratio. Then the ratio of bandwidth for PM for FM signal is (Here = modulation index of FM)

Question 5

A PCM (Pulse Code Modulation) system uses 8-bit encoder and uniform quantization. What is the maximum bandwidth(in MHz) of the low-pass input message signal for which the bit rate of the system is 20Mbps?

Question 6

Modulating signal is transmitted using PCM system. Minimum possible quantization error should be at atmost 0.5% of maximum amplitude of m(t). Sampling rate is 10% higher than Nyquist rate. Find Bit rate.
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