Which one of the following is analog?
A. PCM
B. PWM
C. Delta modulation
D. Differential PCM
Answer: Option B
A. PCM
B. PWM
C. Delta modulation
D. Differential PCM
Answer: Option B
It is found that a ship to ship communication suffers from fading. This can be avoided by using
A. Space diversity
B. Frequency diversity
C. Broad band antenna
D. Directional antenna
A. A double-tuned amplifier
B. A high gain D.C. amplifier
C. A cathode follower stage
D. None of the above
A. Filter method
B. Phase cancellation method
C. Good attenuation characteristics
D. All of the above
Which are the following systems is analog?
a)PCM
b)DM
c)DPCM. d)PAM