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In uniform quantization processIn uniform quantization process
The answer is:
D. both a and c are correct


The process of converting the analog sample into discrete form is calledThe process of converting the analog sample into discrete form is called
The answer is:
C. quantization


The characteristics of compressor in μlaw companding areThe characteristics of compressor in μlaw companding are
The answer is:
A. continuous in nature


The modulation techniques used to convert analog signal into digitalsignal areThe modulation techniques used to convert analog signal into digitalsignal are
The answer is:
D. all of the above


The sequence of operations in which PCM is done isThe sequence of operations in which PCM is done is
The answer is:
A. sampling, quantizing, encoding


In PCM, the parameter varied in accordance with the amplitude of themodulating signal isIn PCM, the parameter varied in accordance with the amplitude of themodulating signal is
The answer is:
D. none of the above


One of the disadvantages of PCM isOne of the disadvantages of PCM isa
The answer is:
A. it requires large bandwidth


The expression for bandwidth BW of a PCM system, where v is thenumber of bits per sample and fm is the modulating frequency, is given byThe expression for bandwidth BW of a PCM system, where v is thenumber of bits per sample and fm is the modulating frequency, is given by
The answer is:
A. bw ≥ vfm


The error probability of a PCM isThe error probability of a PCM is
The answer is:
D. all of the above


In Delta modulation,In Delta modulation,
The answer is:
D. both a and c are correct


In digital transmission, the modulation technique that requiresminimum bandwidth isIn digital transmission, the modulation technique that requiresminimum bandwidth is
The answer is:
A. delta modulation


n Delta Modulation, the bit rate isn Delta Modulation, the bit rate is
The answer is:
A. n times the sampling frequency


In Differential Pulse Code Modulation techniques, the decoding isperformed byIn Differential Pulse Code Modulation techniques, the decoding isperformed by
The answer is:
A. accumulator


DPCM suffers fromDPCM suffers from
The answer is:
C. both a & b


The noise that affects PCMThe noise that affects PCM
The answer is:
D. both a and b are correct


The factors that cause quantizing error in delta modulation areThe factors that cause quantizing error in delta modulation are
The answer is:
D. both a and b are correct


Granular noise occurs whenGranular noise occurs when
The answer is:
B. step size is too large


The crest factor of a waveform is given as –The crest factor of a waveform is given as –
The answer is:
C. peak value/ rms value


The digital modulation technique in which the step size is variedaccording to the variation in the slope of the input is calledThe digital modulation technique in which the step size is variedaccording to the variation in the slope of the input is called
The answer is:
C. adaptive delta modulation


The digital modulation scheme in which the step size is not fixed isThe digital modulation scheme in which the step size is not fixed is
The answer is:
B. adaptive delta modulation

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