A power level of 50 uW could be expressed as: (a) 1.69 dBm (b) -4.3 dBm (c) 1 dBm (d) -13 dBm
A power level of 50 uW could be expressed as: (a) 1.69 dBm (b) -4.3 dBm (c) 1 dBm (d) -13 dBm
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Transcribed Image Text:1 A power level of 50 uW could be expressed as:
(a) 1.69 dBm
(b) -4.3 dBm
(c) 1 dBm
(d) -13 dBm
The length of the link shown in Figure 5.8 is:
(a) 1 km
(b) 3 km
(c) 5 km
(d) 7 km
If a power of 0.25 mW is launched into a fiber system with an
overall loss of 15 dB, the output power would be:
(a) 250 µW
( b) 31.6 μW
(c) 7.9 μW
(d) 15 dBm
4
A system having an input power of 2 mW and an output power of
0.8 mW has a loss of:
(a) 2.98 dBm
(b) 3.98 dB
(c) 3.98 μνW
(d) 1.98 mW
An output of -10 dB means that the power has been:
(a) halved in value
(b) increased by a factor of 10
(c) reduced by a factor of 10
(d) doubled
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