DGVCL Exam Paper (12-06-2016)
The following is/are the characteristics of SF₆ circuit breakers:

It does not need an auxiliary breaking chamber
Short break time of 2 to 2.5 cycles
All of these
None of these

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DGVCL Exam Paper (12-06-2016)
An Auto-transformer (which has only one winding) may be used as a ______ .

Both Step-Up and Step-Down transformer
Step-Up Transformer
None of these
Step-Down Transformer

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