MGVCL Exam Paper (30-07-2021 Shift 1)
While selecting the gas for a circuit breaker, the property of gas that should be considered is its
(i) dielectric strength
(ii) non-inflammability
(iii) non-toxicity

(i) and (iii) only
(i) and (ii) only
(i) only
(i), (ii) and (iii)

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MGVCL Exam Paper (30-07-2021 Shift 1)
As per ___ guidelines, if the ratio of carbon dioxide (CO₂) and carbon monoxide (CO) in dissolved gas analysis is ___, it is predicted that the condition of paper insulation inside the transformer is poor.

IEC-599, more than 11
IEC-899, less than 11
IEC-899, more than 11
IEC-599, less than 11

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