Exams › SSC CGL (Prelims) › General

In satellite communication, what is the primary function of a transponder?

1. Generate electricity
2. Amplify and retransmit signals
3. Control rocket thrust
4. Monitor fuel levels

Correct answer: Amplify and retransmit signals

Solution

A transponder in a communication satellite receives an uplink signal, amplifies it, changes its frequency if needed, and retransmits it back to Earth. It does not generate power or control the satellite's propulsion.

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