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

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

ANSWER DOWNLOAD EXAMIANS APP

DGVCL Exam Paper (12-06-2016)
What would happen if a power transformer designed for operation on 50 Hz (frequency) were connected to a 500 Hz (frequency) source of the same voltage:

No effect
Current will be too much high
Transformer may start to smoke and burn
Eddy Current and Hysteresis losses will be excessive

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

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

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

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP
MORE MCQ ON DGVCL Exam Paper (12-06-2016)