1) Why is an electrical isolation required between several portions of an electronic circuit?
a. Provision of high voltage protection
b. Reduction in noise level
c. Both a & b
d. None of the above
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Answer
Explanation
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ANSWER: Both a & b
Explanation:
No explanation is available for this question!
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2) Basically, solitons are pulses which propagates through the fiber without showing any variation in ______
a. Amplitude
b. Velocity
c. Shape
d. All of the above
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Answer
Explanation
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ANSWER: All of the above
Explanation:
No explanation is available for this question!
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3) Which band/s specify/ies the operation range of Erbium doped fiber amplifier (EDFA)?
a. By O band
b. By C band
c. By S band
d. All of the above
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Answer
Explanation
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ANSWER: By C band
Explanation:
No explanation is available for this question!
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4) In an optical network, increase in the number of lasers ________the bit rate.
a. Increases
b. Stabilizes
c. Decreases
d. None of the above
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Answer
Explanation
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ANSWER: Increases
Explanation:
No explanation is available for this question!
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5) In circulator, an optical path of signal follows _______
a. An open loop
b. A closed loop
c. Both a and b
d. None of the above
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Answer
Explanation
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ANSWER: A closed loop
Explanation:
No explanation is available for this question!
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6) Which among the following controls the length of Fabry-Perot interferometer so that it can act as a tunable optical filter?
a. Transducer
b. Tachometer
c. Multimeter
d. Phase-meter
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Answer
Explanation
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ANSWER: Transducer
Explanation:
No explanation is available for this question!
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7) Which category/ies of wavelength division multiplexer comprise/s two 3dB couplers where the splitting of an incident beam takes place into two fiber paths, followed by the recombination with second 3-dB coupler?
a. Interference filter based devices
b. Angular dispersion based devices
c. Mach-Zehnder Interferometers
d. All of the above
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Answer
Explanation
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ANSWER: Mach-Zehnder Interferometers
Explanation:
No explanation is available for this question!
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8) Speckle pattern is generated due to interference of nodes from a coherent source especially when the coherence time of source is _________ the intermodal dispersion time in the fiber.
a. Less than
b. Greater than
c. Equal to
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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9) Which phenomenon causes the dynamic line width broadening under the direct modulation of injection current?
a. Modal Noise
b. Mode-partition Noise
c. Frequency Chirping
d. Reflection Noise
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Answer
Explanation
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ANSWER: Frequency Chirping
Explanation:
No explanation is available for this question!
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10) Which method determines the dispersion limitation of an optical link?
a. Link power budget
b. Rise time budget
c. Both a and b
d. None of the above
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Answer
Explanation
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ANSWER: Rise time budget
Explanation:
No explanation is available for this question!
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