Q91. In a bulk oil circuit breaker, the oil actually used for arc extinction is about

Q92. The following contact is largely used for low-voltage oil circuit breaker

Q93. For long EHV/UHV transmission lines we normally use

Q94. _______utilize high pressure compressed air for arc extinction, and need a compressed air plant.

Q95. The pressure of \(SF_6\) gas in circuit breaker is of the order of

Q96. Which one of the following is not true for Sulphur Hexafluoride gas?

Q97. Where voltages are high and current to be interrupted is low, the circuit breaker preferred is

Q98. The rating of a circuit breaker is usually determined on the basis of ____ fault

Q99. The Making capacity of a circuit breaker is equal to

Q100. A negative sequence relay is commonly use to protect