railway DFCCIL Junior Executive 2023 (CBT 1 & CBT 2) Mock Test Power Systems Circuit Breakers Classification of Circuit Breakers
Which of the following options CORRECTLY identifies the common characteristics of the substations listed below?
a. Conventional outdoor
b. SF6 gas insulated metal enclosed substation
c. Hybrid substation
1
Suitable for a voltage less than 66 kV
2
Suitable for voltage 66 kV and above
3
High magnetic flux
4
Low initial cost