4. Determine the optical power received in dBm and watts for a 24 km optical fiber link with the following parameters: LED output power of 20 mW Six 4 km sections of optical cable each with a loss of 0.6 dB/km Three cable-to-cable connectors with a loss of 2.1 dB each No cable splices Light source-to-fiber interface loss of 2.2 dB Fiber-to-light detector loss of 1.8 dB No losses due to cable bends

4. Determine the optical power received in dBm and watts for a 24 km optical fiber link with the following parameters: LED output power of 20 mW Six 4 km sections of optical cable each with a loss of 0.6 dB/km Three cable-to-cable connectors with a loss of 2.1 dB each No cable splices Light source-to-fiber interface loss of 2.2 dB Fiber-to-light detector loss of 1.8 dB No losses due to cable bends

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter5: Transmission Lines: Steady-state Operation

Section: Chapter Questions

Problem 5.17MCQ

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Concept explainers

Types of Thyristors

With four layers of alternating P- and N- materials, a thyristor is a solid-state semiconductor device. It acts as a type of bi-stable switch and it conducts when the gate receives a current trigger and continues to conduct until the voltage is reverse biased across the device or by some means until the voltage is removed. The silicon-controlled rectifier is considered synonymous with thyristors by some sources. Thyristors are defined as more complex by other sources as it contains at least four-layer of alternating N-type and P-type substrate. They find large applications in the control of electrical power supplies, electric motor speed control, and ranging of light dimmers because thyristors can control large amounts of power supplies and voltage with a small device. The circuit symbol of the thyristor is given below.

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4. Determine the optical power received in dBm and watts for a 24 km
optical fiber link with the following parameters:
LED output power of 20 mW
Six 4 km sections of optical cable each with a loss of 0.6
dB/km
Three cable-to-cable connectors with a loss of 2.1 dB
each
No cable splices
Light source-to-fiber interface loss of 2.2 dB
Fiber-to-light detector loss of 1.8 dB
No losses due to cable bends

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