Noise figure is defined as
A. $$F = \frac{{\frac{{{S_i}}}{{{N_i}}}}}{{\frac{{{S_0}}}{{{N_0}}}}}$$
B. $$F = \frac{{\frac{{{S_0}}}{{{N_0}}}}}{{\frac{{{S_i}}}{{{N_i}}}}}$$
C. $$F = \frac{{\frac{{{S_0}}}{{{N_0}}}}}{{\sqrt {\frac{{{S_i}}}{{{N_i}}}} }}$$
D. $$F = \frac{{\frac{{{S_i}}}{{{N_i}}}}}{{\sqrt {\frac{{{S_0}}}{{{N_0}}}} }}$$
Answer: Option A
This Question Belongs to Electronics And Communications Engineering >> Communication Systems
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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