Switch Gear Which of the following circuit breakers is prefered for EHT applications ? air break circuit breaker low oil circuit breaker Sf6 CB bulk oil circuit breaker air break circuit breaker low oil circuit breaker Sf6 CB bulk oil circuit breaker ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The contacts of high voltage switches used in power system are submerged in oil. The main purpose of the oil is to extinguish the arc All of these None of these insulate the contacts from switch body lubricate the contacts extinguish the arc All of these None of these insulate the contacts from switch body lubricate the contacts ANSWER DOWNLOAD EXAMIANS APP
Switch Gear A short-circuit is identified by voltage drop heavy current flow no current flow voltage rise voltage drop heavy current flow no current flow voltage rise ANSWER DOWNLOAD EXAMIANS APP
Switch Gear A differential relay measures the vector difference between two or more similar electrical quantities None of these two currents two voltages two or more similar electrical quantities None of these two currents two voltages ANSWER DOWNLOAD EXAMIANS APP
Switch Gear If the fault occurs near the impedance relay, the V/ I ratio will be None of these Lower than that of if fault occurs away from the relay higher than that of if fault occurs away from the relay constant for all distances None of these Lower than that of if fault occurs away from the relay higher than that of if fault occurs away from the relay constant for all distances ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The rating of a circuit breaker is generally determined on the basis of double line to ground fault current symmetrical fault current single line to ground fault current line to line fault current double line to ground fault current symmetrical fault current single line to ground fault current line to line fault current ANSWER DOWNLOAD EXAMIANS APP
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