Switch Gear The main function of a fuse is to prevent excessive currents open the circuit protect the line protect the appliance None of these prevent excessive currents open the circuit protect the line protect the appliance None of these ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The transient voltage that appears across the contacts at the instant of arc extinction is called recovery voltage peak voltage supply voltage restriking voltage recovery voltage peak voltage supply voltage restriking voltage ANSWER DOWNLOAD EXAMIANS APP
Switch Gear Circuit breakers usually operate under transient state of short circuit current steady state of short circuit current sub-transient state of short circuit current after dc component has ceased transient state of short circuit current steady state of short circuit current sub-transient state of short circuit current after dc component has ceased ANSWER DOWNLOAD EXAMIANS APP
Switch Gear An overcurrent relay having current settling of 125% is connected to a supply circuit through a current transformer of 400/5 A. The pick-up current is 12.5 A 3.125 A 6.25 A 25 A 12.5 A 3.125 A 6.25 A 25 A 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 100 A more than 1000 A 300 A 200 A 100 A more than 1000 A 300 A 200 A ANSWER DOWNLOAD EXAMIANS APP
Switch Gear An efficient and a well designed protective relaying should have good selectivity and reliability economy and simplicity high speed and selectivity All of these good selectivity and reliability economy and simplicity high speed and selectivity All of these ANSWER DOWNLOAD EXAMIANS APP
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