Analog Pulse Modulation » Exercise – 1
1. Pulse modulation is used in –
(a) Radio navigation
(b) Automatic landing equipments
(c) Data communications
(d) All of the above
2. The signal to quantisation noise ratio in a PCM system depends on –
(a) Sampling rate
(b) Number of quantisation levels
(c) Message signal bandwidth
(d) None of the above
3. All output pulses are at full transmitter power for a strong signal in all of the following except –
(a) PWM
(b) PAM
(c) PFM
(d) PCM
4. Pulse modulation is often used in –
(a) Microwave band
(b) LF band
(c) Telegraphy
(d) Telephony
5. Quantization noise occurs in :
(a) PCM
(b) TDM
(c) FDM
(d) PWD
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