Power Systems An over current relay, having a current setting of 125% connected to a supply circuit through a current transformer of ratio 400/5. The pick up value is 6.25 A 12.5 A 10 A 15 A 6.25 A 12.5 A 10 A 15 A ANSWER DOWNLOAD EXAMIANS APP
Power Systems The load current in short circuit calculations are neglected because short circuit currents are greatly out of phase with load currents nether 1 nor 2 short circuit currents are much larger than load currents both 1 and 2 short circuit currents are greatly out of phase with load currents nether 1 nor 2 short circuit currents are much larger than load currents both 1 and 2 ANSWER DOWNLOAD EXAMIANS APP
Power Systems The zero sequence current of a generator for line to ground fault is j3 pu. Then the current through the neutral during the fault is j9 pu j3 pu j1 pu j6 pu j9 pu j3 pu j1 pu j6 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems Equal area criterion gives the information regarding absolute stability stability region relative stability swing curves absolute stability stability region relative stability swing curves ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following represents the transmission or reflection coefficient of voltage Tv? (Zl = Surge impedance of load, Zs = Surge impedance of line) 2Zl/(Zs + Zl) (Zs - Zl)/(Zs + Zl) 2Zs/(Zs + Zl) (Zl - Zs)/(Zs + Zl) 2Zl/(Zs + Zl) (Zs - Zl)/(Zs + Zl) 2Zs/(Zs + Zl) (Zl - Zs)/(Zs + Zl) ANSWER DOWNLOAD EXAMIANS APP
Power Systems In a biased differential relay the bias is defined as the ratio of operating coil current and restraining coil current. number of turns of restraining and operating coil. fault current and restraining coil current. fault current and operating coil current. operating coil current and restraining coil current. number of turns of restraining and operating coil. fault current and restraining coil current. fault current and operating coil current. ANSWER DOWNLOAD EXAMIANS APP
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