Power Systems The line currents of 3-phase supply are: IR = 3 + j 5 A IY =2 + j 2 A IB = -2 - j 1 A The zero sequence current will be 5 + j 7 A 1 + j 4 A 1 + j 2 A -2 - j 1 A 5 + j 7 A 1 + j 4 A 1 + j 2 A -2 - j 1 A ANSWER DOWNLOAD EXAMIANS APP
Power Systems The main objectives of power system is/are Cost of electrical energy per KWh is to be minimum Reliable power has to be available All of these Flexible power has to be available. Cost of electrical energy per KWh is to be minimum Reliable power has to be available All of these Flexible power has to be available. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following statement is/are true?Zn The neutral grounding impedance Zn appears as Zn in zero sequence equivalent circuit both 1 and 2 The neutral grounding impedance Zn appears as 3Zn in zero sequence equivalent circuit nether 1 nor 2 The neutral grounding impedance Zn appears as Zn in zero sequence equivalent circuit both 1 and 2 The neutral grounding impedance Zn appears as 3Zn in zero sequence equivalent circuit nether 1 nor 2 ANSWER DOWNLOAD EXAMIANS APP
Power Systems In a 3-phase transmission line, each phase is supported by 3 insulated discs, maximum voltage of each disc is 20 kV. Find the operating voltage of the transmission line per phase if efficiency of string is 80.6%. 48.36 kV 52.84 kV 20 kV 83.76 kV 48.36 kV 52.84 kV 20 kV 83.76 kV ANSWER DOWNLOAD EXAMIANS APP
Power Systems Fault calculations using computer are usually done by Z bus method Y bus method either 1 or 2 None of these Z bus method Y bus method either 1 or 2 None of these ANSWER DOWNLOAD EXAMIANS APP
Power Systems On which one of the following cycles does a modern steam power plat work Rankine cycle. Bell - Coleman cycle. Carnot cycle. Otto cycle. Rankine cycle. Bell - Coleman cycle. Carnot cycle. Otto cycle. ANSWER DOWNLOAD EXAMIANS APP
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