This is principle telecommunications class Multiple choice, and say why? (explai

Question

This is principle telecommunications class
Multiple choice, and say why? (explaintion)
5- the technique of enhancing the higher frequencies in the transmitted signal is known as (a) pre-emphasis. (b) de-emphasis. (c) coherence. (d) rectification.
6- a measure of quality for a transmission line in operation is the (a) VSWR. (b) radiation resistance. (c) gain. (d) critical frequency.
7- the effective electrical length of an antenna is increased by (a) matching. (b) reflection. (c) loading. (d) extension.
This is principle telecommunications class
Multiple choice, and say why? (explaintion)
5- the technique of enhancing the higher frequencies in the transmitted signal is known as (a) pre-emphasis. (b) de-emphasis. (c) coherence. (d) rectification.
6- a measure of quality for a transmission line in operation is the (a) VSWR. (b) radiation resistance. (c) gain. (d) critical frequency.
7- the effective electrical length of an antenna is increased by (a) matching. (b) reflection. (c) loading. (d) extension.

Multiple choice, and say why? (explaintion)
5- the technique of enhancing the higher frequencies in the transmitted signal is known as (a) pre-emphasis. (b) de-emphasis. (c) coherence. (d) rectification.
6- a measure of quality for a transmission line in operation is the (a) VSWR. (b) radiation resistance. (c) gain. (d) critical frequency.
7- the effective electrical length of an antenna is increased by (a) matching. (b) reflection. (c) loading. (d) extension.
Multiple choice, and say why? (explaintion)
5- the technique of enhancing the higher frequencies in the transmitted signal is known as (a) pre-emphasis. (b) de-emphasis. (c) coherence. (d) rectification. 5- the technique of enhancing the higher frequencies in the transmitted signal is known as (a) pre-emphasis. (b) de-emphasis. (c) coherence. (d) rectification.
6- a measure of quality for a transmission line in operation is the (a) VSWR. (b) radiation resistance. (c) gain. (d) critical frequency.
7- the effective electrical length of an antenna is increased by (a) matching. (b) reflection. (c) loading. (d) extension.

Explanation / Answer

5. (c) coherence (definition)

6. (a) VSWR (VSWR is a function of the reflection coefficient, which describes the power reflected from the antenna.)

7. (c) loading (It lowers the antenna's resonant frequency. Thus wavelength is increases which increases the electrical length of the antenna.)

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