Power Systems Which of the following matrix is used for load flow studies? Unit matrix null matrix Z bus matrix Y bus matrix Unit matrix null matrix Z bus matrix Y bus matrix ANSWER DOWNLOAD EXAMIANS APP
Power Systems Three generators rated 100 MVA, 11 kV have an impedance of 0.15 pu each. If in the same plant, these generators are being replaced by a single equivalent generator, the effective impedance of equivalent generator will be 0.25 pu 0.15 pu 0.45 pu 0.05 pu 0.25 pu 0.15 pu 0.45 pu 0.05 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 200 MVA alternator operated at no load at frequency of 50 Hz, it has inertia constant of 5 MWsec/MVA and governing system has a time delay of 0.6 sec. If the load of 50 MW is suddenly applied then find the frequency deviation during this time? -0.76 Hz 0.85 Hz -0.85 Hz 0.76 Hz -0.76 Hz 0.85 Hz -0.85 Hz 0.76 Hz ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following is/are the desirable properties of a insulator material? Low ratio of puncture strength to flash over. Both 1 and 2 High ratio of puncture strength to flash over. High relative permittivity Low ratio of puncture strength to flash over. Both 1 and 2 High ratio of puncture strength to flash over. High relative permittivity ANSWER DOWNLOAD EXAMIANS APP
Power Systems Storage requirement can be determined from flow duration curve. mass Curve. both B and C. hydro-graph. flow duration curve. mass Curve. both B and C. hydro-graph. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Deaerative heating is done to heat the feed water. heat the steam. remove dissolved gases in water. remove dissolved. heat the feed water. heat the steam. remove dissolved gases in water. remove dissolved. ANSWER DOWNLOAD EXAMIANS APP
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