In circuit breakers, oil as quenching medium has the advantage of

good cooling properties and absorption of arc energy

high dielectric strength

acting as an Insulator

all of the above

Air blast circuit breaker

Minimum oil circuit breaker

Bulk oil circuit breaker

Sulphur hexafluoride circuit breaker

provide Insulation

provide cooling of contacts

quenching arc

none of the above

to act as circuit breaking medium only

for circuit breaking and providing insulation

for providing insulation only

for none of the above purposes

Bulk oil type circuit breaker

Air blast circuit breaker

Vacuum circuit breaker

Sulphur hexafluoride circuit breaker