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

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

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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-Down Transformer
Step-Up Transformer
None of these

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DGVCL Exam Paper (12-06-2016)
Step-down transformer converts high voltage and low current into:

None of these
How voltage and high current
Low voltage and high current
High voltage and low current

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