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 1500/√3 A 750 A 1500 A None of these 1500/√3 A 750 A 1500 A None of these ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The relay operating speed depends upon the rate of flux built up the spring tension All of these armature core air gap the rate of flux built up the spring tension All of these armature core air gap ANSWER DOWNLOAD EXAMIANS APP
Switch Gear A _______ is used to measure the stator % winding temperature of the generator. resistance thermometer thermocouple thermometer pyrometer resistance thermometer thermocouple thermometer pyrometer ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The time of closing the cycle, in modern circuit breakers is 0.001 sec 0.01 sec 0.003 sec 0.10 sec 0.001 sec 0.01 sec 0.003 sec 0.10 sec 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 lubricate the contacts None of these insulate the contacts from switch body extinguish the arc All of these lubricate the contacts None of these insulate the contacts from switch body ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The arcing contacts in a circuit breaker are made of porcelain aluminium alloy electrolytic copper copper tungsten alloy porcelain aluminium alloy electrolytic copper copper tungsten alloy ANSWER DOWNLOAD EXAMIANS APP
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