Question

Where is the video amplifier used?
TV
radio
TV and radio
​

Answer 1

Answer:

T.V because video can be shown on T.V not at radio

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Answer 2

Answer:

At the input terminals of the receiver, the picture and sound signals are at their weakest, so particular care must be taken to control noise at this point. The first circuit in the receiver is a radio-frequency amplifier, particularly designed for low-noise amplification. The channel-switching mechanism (tuner) of the receiver connects this amplifier to one of several individual circuits, each circuit tuned to its respective channel. The amplifier magnifies the voltages of the incoming picture and sound carriers and their side bands in the desired channel by about 10 times, and it discriminates by a like amount against the transmissions of stations on other channels.

Explanation:

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