Switch Gear A three phase circuit breaker is rated at 2000 MVA, 33 kv. The symmetrical breaking current is 35 kA 60 kA 20 kA 80 kA 35 kA 60 kA 20 kA 80 kA ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The normal current in a power line is 100 A. If a short-circuit fault occurs on the line, then one can expect the short-circuit current to be more than 1000 A 300 A 200 A 100 A more than 1000 A 300 A 200 A 100 A ANSWER DOWNLOAD EXAMIANS APP
Switch Gear A fuse element is generally made of silver steel iron brass silver steel iron brass ANSWER DOWNLOAD EXAMIANS APP
Switch Gear Arc in a circuit breaker behaves as a resistance decreasing with voltage rise across the arc an inductive reactance a capacitive reactance a resistance increasing with voltage rise across the arc a resistance decreasing with voltage rise across the arc an inductive reactance a capacitive reactance a resistance increasing with voltage rise across the arc 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 lubricate the contacts All of these None of these extinguish the arc insulate the contacts from switch body lubricate the contacts All of these None of these extinguish the arc insulate the contacts from switch body ANSWER DOWNLOAD EXAMIANS APP
Switch Gear For interrupting of high voltage and low current, the circuit breaker prefered is vaccum circuit breaker all are correct oil circuit breaker air-blast circuit breaker vaccum circuit breaker all are correct oil circuit breaker air-blast circuit breaker ANSWER DOWNLOAD EXAMIANS APP
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