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ISRO NRSC TECHNICIAN ADMIT CARD DOWNLOAD ☝️☝️☝️☝️☝️
Q) SF6 gas is a
A) sulphur fluoride B) sulphur difluoride C) sulphur hexafluoride D) sulpher dioxide
Q) The medium employed for the extinction of arc in air circuit breaker is
A) SF6 B) Oil C) Air D) Water
Q) A circuit breaker is
A) power factor correcting device B) a device to neutralize the effect of transients C) a waveform correcting device D) a current interrupting device
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