What is the typical bandwidth of a 2-wire telephone line?
A. 300 Hz to 3.4 KHz
B. 20 Hz to 4 KHz
C. d.c. to 4 KHz
D. 20 Hz to 20 KHz
Answer: Option A
A. 300 Hz to 3.4 KHz
B. 20 Hz to 4 KHz
C. d.c. to 4 KHz
D. 20 Hz to 20 KHz
Answer: Option A
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
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