1) In an optical fiber communication system, which among the following is not a typical transmitter function?
a. Coding for error protection
b. Decoding of input data
c. Electrical to optical conversion
d. Recoding to match output standard
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Answer
Explanation
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ANSWER: Recoding to match output standard
Explanation:
No explanation is available for this question!
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2) In the structure of fiber optic cable, the refractive index of core is always _______the refractive index of cladding.
a. Less than
b. Equal to
c. Greater than
d. None of the above
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Answer
Explanation
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ANSWER: Greater than
Explanation:
No explanation is available for this question!
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3) If a noisy channel has a bandwidth of 4 MHz with signal to noise ratio of about 1, what would be the maximum capacity of the channel?
a. 2 Mb/sec
b. 4 Mb/sec
c. 6 Mb/sec
d. 8 Mb/sec
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Answer
Explanation
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ANSWER: 4 Mb/sec
Explanation:
No explanation is available for this question!
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4) Which is the transmission medium for VLF electromagnetic waves especially applicable for aeronautical and submarine cables?
a. Paired wires
b. Coaxial cable
c. Waveguide
d. Wireless
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Answer
Explanation
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ANSWER: Paired wires
Explanation:
No explanation is available for this question!
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5) In the structure of a fiber, which component provides additional strength and prevents the fiber from any damage?
a. Core
b. Cladding
c. Buffer Coating
d. None of the above
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Answer
Explanation
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ANSWER: Buffer Coating
Explanation:
No explanation is available for this question!
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6) In the structure of fiber, the light is guided through the core due to total internal ______
a. reflection
b. refraction
c. diffraction
d. dispersion
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Answer
Explanation
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ANSWER: reflection
Explanation:
No explanation is available for this question!
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7) Which line code in PCM indicates the return of signal to zero between each pulse & takes place even due to occurrence of consecutive 0's & 1's in the signal?
a. Return-to-zero (RZ)
b. Non-Return to zero space
c. Return to zero inverted
d. Non-return to zero inverted
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Answer
Explanation
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ANSWER: Return-to-zero (RZ)
Explanation:
No explanation is available for this question!
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8) Which property/ies of PCM stream determine/s the fidelity to original analog signal?
a. Sampling rate
b. Bit depth
c. Both a and b
d. None of the above
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Answer
Explanation
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ANSWER: Both a and b
Explanation:
No explanation is available for this question!
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9) For a sine wave, the frequency is represented by the cycles per ______
a. Second
b. Minute
c. Hour
d. None of the above
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Answer
Explanation
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ANSWER: Second
Explanation:
No explanation is available for this question!
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10) Which among the following is provided by an optical receiver for the regeneration of data signal with minimum error?
a. Photo-diode
b. Signal Processing Circuits
c. Linear Circuitry
d. None of the above
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Answer
Explanation
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ANSWER: Linear Circuitry
Explanation:
No explanation is available for this question!
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