Power Systems Counter poise is used for reduce losses more surge impedance proper discharging of lighting surges less surge impedance reduce losses more surge impedance proper discharging of lighting surges less surge impedance ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following statements is/are true? The elements of each row of a Y bus matrix for load flow studies in power system add up to zero if both 2 and 3 are satisfied if the shunt admittances at the buses are ignored if the mutual couplings between transmission lines are absent always if both 2 and 3 are satisfied if the shunt admittances at the buses are ignored if the mutual couplings between transmission lines are absent always ANSWER DOWNLOAD EXAMIANS APP
Power Systems The surge impedance of a 400 km long overhead transmission line is 420 Ω. For a 200 km length of the same line, the surge impedance will be 400 Ω 210 Ω 420 Ω 840 Ω 400 Ω 210 Ω 420 Ω 840 Ω ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following transformer is used in sub station for operating a protective relay? capacitor voltage transformer auto transformer distribution transformer All of these capacitor voltage transformer auto transformer distribution transformer All of these ANSWER DOWNLOAD EXAMIANS APP
Power Systems In relay coil which is used? Power transformer. Potential transformer. Instrument transformer. Current transformer. Power transformer. Potential transformer. Instrument transformer. Current transformer. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Steady state stability of a power system is improved by decreasing generator inertia All of these using double circuit line instead of single circuit line single pole switching decreasing generator inertia All of these using double circuit line instead of single circuit line single pole switching ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS