Power Systems A transmission line has a surge impedance of 400 Ω for a length of the line of 200 km. If the length of line is increased to 400 km, then its surge impedance is 400 Ω 0 Ω 200 Ω 800 Ω 400 Ω 0 Ω 200 Ω 800 Ω ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 4 bus power system consists of 4 transmission lines, then find the sparsity of Y bus matrix? 0.25 0.5 0.4 0.75 0.25 0.5 0.4 0.75 ANSWER DOWNLOAD EXAMIANS APP
Power Systems A fault occurring at the terminals of an unloaded synchronous generator operating at its rated voltage has resulted in the following values of currents and voltages. IR0 = j 2.37 pu IR1 = -j 3.05 pu IR2 = j 0.68 pu VR0 = VR1 = VR2 = 0.237 pu. Which of the following faults has occurred? LG LLG LL LLL LG LLG LL LLL ANSWER DOWNLOAD EXAMIANS APP
Power Systems In case of failure of prime mover of the generator, which type of relay is used? distance relays reverse power relay impedance relay offset mho relay distance relays reverse power relay impedance relay offset mho relay ANSWER DOWNLOAD EXAMIANS APP
Power Systems Buchholz relay is used for protection of bus bar. alternator. transformer. none of these. bus bar. alternator. transformer. none of these. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 3 layer and diameter of each strand is d, then find the total diameter of ACSR conductor? 5d 3d 2d d 5d 3d 2d d ANSWER DOWNLOAD EXAMIANS APP
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