Why is a relay considered better than a mechanical switch?

Solid-State Switching Circuits MCQs for PPSC, FPSC, NTS, and Pakistan government job tests. Select an option below, then read the explanation.

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Subject
Solid-State Switching Circuitselectrical-engineering-mcqs › solid-state-switching-circuits
Published
22 Dec 2018
Last updated
28 May 2026

Browse all Solid-State Switching Circuits MCQs

Choose the correct answer

Explanation

Option A suggests low cost, which is not the primary advantage. Option B incorrectly states that relays have no moving parts. The correct benefit is that relays can control circuits while also amplifying power, making option C the right choice.

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