Power Systems Fault calculations using computer are usually done by Z bus method None of these Y bus method either 1 or 2 Z bus method None of these Y bus method either 1 or 2 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) (Zs - Zl)/(Zs + Zl) 2Zl/(Zs + Zl) (Zl - Zs)/(Zs + Zl) 2Zs/(Zs + Zl) (Zs - Zl)/(Zs + Zl) 2Zl/(Zs + Zl) (Zl - Zs)/(Zs + Zl) 2Zs/(Zs + Zl) ANSWER DOWNLOAD EXAMIANS APP
Power Systems Frequencies must be same in which of the following line to exchange the power from one place to other place ? both 1 and 2 No need of same frequency for exchange of power Synchronous line Asynchronous line both 1 and 2 No need of same frequency for exchange of power Synchronous line Asynchronous line ANSWER DOWNLOAD EXAMIANS APP
Power Systems One Kg of natural uranium gives energy equivalent to about 5000 Kg of coal. 10500 Kg of coal. 100 Kg of coal. 1000 Kg of coal. 5000 Kg of coal. 10500 Kg of coal. 100 Kg of coal. 1000 Kg of coal. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Two insulator discs of identical capacitance value C make up a string for a 22 kV, 50 Hz, single phase overhead line insulation system. If pin to earth capacitance is also C, then find the string efficiency? 90% 50% 75% 86%% 90% 50% 75% 86%% ANSWER DOWNLOAD EXAMIANS APP
Power Systems A three phase, 33 kV oil circuit breaker is rated 1200 A, the symmetrical breaking capacity is 2000 MVA, 3 secs. Then the making capacity is 5200 MVA. 5500 MVA. 5000 MVA. 5100 MVA. 5200 MVA. 5500 MVA. 5000 MVA. 5100 MVA. ANSWER DOWNLOAD EXAMIANS APP
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