Answer / sheikh

VCB is vacuum circuit breaker and there is arc quenching medium is vacuum . VCB used on high & medium voltage.
ACB is Air circuit breaker and there is arc quenching medium
is Air blast. ACB used on low voltage application .
there are main difference is quenching mediums.

why there is spacing between two rails in railway?

3 Answers   DS Group, RRB,

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0 Answers   NTPC,

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9 Answers   TATA,

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