Switch Gear Which of the following circuit breakers is prefered for EHT applications ? bulk oil circuit breaker low oil circuit breaker Sf6 CB air break circuit breaker bulk oil circuit breaker low oil circuit breaker Sf6 CB air break circuit breaker ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The arc voltage produced in AC circuit breaker is always leading the arc current by 90° In phase with the arc current None of these lagging the arc current by 90° leading the arc current by 90° In phase with the arc current None of these lagging the arc current by 90° ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The making capacity of a circuit breaker is equal to 2.55 × symmetrical breaking capacity √2 × symmetrical breaking capacity None of these √3 × symmetrical breaking capacity 2.55 × symmetrical breaking capacity √2 × symmetrical breaking capacity None of these √3 × symmetrical breaking capacity ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The fuse rating is expressed in terms of current VAR voltage kVA current VAR voltage kVA ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The reflection co-efficient at the open circuited end of a transmission line None of these unity infinity zero None of these unity infinity zero ANSWER DOWNLOAD EXAMIANS APP
Switch Gear If the length of the arc in a circuit breaker increases, its resistance remains same increases decreases None of these remains same increases decreases None of these ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS