engineering recuitment BEL Probationary Engineers Mock Test 2025 Communication Systems Pulse Modulation Pulse Code Modulation (PCM) System
What is the required bandwidth of the PCM system for 256 quantization levels when 48 telephone channels, each bandlimited to 4 kHz, are to be time-division multiplexed by this PCM?
1
6.246 MHz
2
3.464 MHz
3
3.072 MHz
4
1.544 MHz