Q. A PCM system uses a uniform Quantizer which has a range- V to +V and is followed by a 7 bit binary encoder. A zero mean signal applied to the quantizer extends over its entire range and has uniform probability density. The ratio of the signal power of the quantization noise power at the output of the quantizer is (Take log102 = 0.3 ) ?
✅ Correct Answer: (C)
42dB