Power Systems In a biased differential relay the bias is defined as the ratio of operating coil current and restraining coil current. fault current and operating coil current. fault current and restraining coil current. number of turns of restraining and operating coil. operating coil current and restraining coil current. fault current and operating coil current. fault current and restraining coil current. number of turns of restraining and operating coil. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Steady state stability of a power system is improved by All of these decreasing generator inertia using double circuit line instead of single circuit line single pole switching All of these decreasing generator inertia using double circuit line instead of single circuit line single pole switching ANSWER DOWNLOAD EXAMIANS APP
Power Systems Bundled conductors are used for EHV transmission lines primarily for reducing the surge impedance of the line voltage drop across the line copper loss corona loss surge impedance of the line voltage drop across the line copper loss corona loss ANSWER DOWNLOAD EXAMIANS APP
Power Systems A transmission line has an impedance of (2+j6) Ω has voltage regulation of 10% at a load power factor of 0.8 lag. Find the voltage regulation for a load of 0.6 lead 10% -10% -6.92% 6.92% 10% -10% -6.92% 6.92% ANSWER DOWNLOAD EXAMIANS APP
Power Systems A cable has inductance of 0.22 mH per km and capacitance of 0.202 µF per km. The surge impedance of the cable is 52 Ω 40 Ω 33 Ω 28 Ω 52 Ω 40 Ω 33 Ω 28 Ω ANSWER DOWNLOAD EXAMIANS APP
Power Systems The characteristic impedance of a transmission on line is Directly proportional to square root of its length. Directly proportional to its length. Inversely proportional to its length. Independent of its length. Directly proportional to square root of its length. Directly proportional to its length. Inversely proportional to its length. Independent of its length. ANSWER DOWNLOAD EXAMIANS APP
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