Switch Gear The contacts of high voltage switches used in power system are submerged in oil. The main purpose of the oil is to All of these lubricate the contacts extinguish the arc None of these insulate the contacts from switch body All of these lubricate the contacts extinguish the arc None of these insulate the contacts from switch body ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The reflection co-efficient at the open circuited end of a transmission line infinity unity zero None of these infinity unity zero None of these ANSWER DOWNLOAD EXAMIANS APP
Switch Gear Most of the relays on service on electric power system are electronic relays thermal relays None of these electro-mechanical relays electronic relays thermal relays None of these electro-mechanical relays ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The time-current graph of a fuse is a circle None of these has a linear characteristic has inverse characteristic is a circle None of these has a linear characteristic has inverse characteristic ANSWER DOWNLOAD EXAMIANS APP
Switch Gear A circuit breaker is rated as 1500 A, 1000 MVA, 33 kv, 3-second , 3- phase oil circuit breaker. The rated normal current is 750 A 1500/√3 A None of these 1500 A 750 A 1500/√3 A None of these 1500 A ANSWER DOWNLOAD EXAMIANS APP
Switch Gear SF 6 gas is yellow in colour is lighter than air has pungent small Is nontoxic is yellow in colour is lighter than air has pungent small Is nontoxic ANSWER DOWNLOAD EXAMIANS APP
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