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Communications - General Questions (2)

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Communications - General Questions

9. 

In order for a light ray to propagate along a fiber-optic cable, what must the relationship be between the angle of incidence and the critical angle?

A. θi > θc
B. θi < θc
C. θi = θc
D. none of the above

Answer: Option A

Explanation:

No answer description available for this question.
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10. 

The intermediate frequency in a standard AM receiver is

A. 455 Hz.
B. 455 kHz.
C. 4.55 MHz.
D. none of the above

Answer: Option B

Explanation:

No answer description available for this question.
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11. 

An AM demodulator can be implemented with a linear multiplier followed by a ________ filter.

A. low-pass
B. high-pass
C. band-pass
D. band-stop

Answer: Option A

Explanation:

No answer description available for this question.
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12. 

A certain fiber-optic cable has the following characteristics: n1 = 1.82 and n2 = 1.73. What is the value of θc?

A. 71.90º
B. 0.95º
C. 18.1º
D. 1.81º

Answer: Option A

Explanation:

No answer description available for this question.
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