Power Systems The Y bus matrix of 100 bus interconnected system is 90% sparse. Hence the number of transmission lines in the system must be 450 500 250 900 450 500 250 900 ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 100 MVA alternator operating at full load at 50 Hz. H = 4 MWsec/MVA, Td = 0.5 sec. One of the transmission line is tripped. So that output of generator is reduced to 70 MW. Find the frequency deviation during this time? 0.92 0.56 -0.92 -0.56 0.92 0.56 -0.92 -0.56 ANSWER DOWNLOAD EXAMIANS APP
Power Systems A three phase, 33 kV oil circuit breaker is rated 1200 A, 2000 MVA, 3 secs. The symmetrical breaking current is 35 kA. 50 kA. 55 kA. 45 kA. 35 kA. 50 kA. 55 kA. 45 kA. ANSWER DOWNLOAD EXAMIANS APP
Power Systems An hydro-graph indicates All of these the discharge at any time during the period under consideration. the average run off during the period. the maximum and minimum run off during the period. All of these the discharge at any time during the period under consideration. the average run off during the period. the maximum and minimum run off during the period. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following statements is/are true? Corona is reduced by increasing the distance between the conductor All of these decreasing the supply frequency increasing the radius of the conductor increasing the distance between the conductor All of these decreasing the supply frequency increasing the radius of the conductor ANSWER DOWNLOAD EXAMIANS APP
Power Systems Thermal shielding is provided to protected the operating personal from exposure to radiations. All of these prevent the reactor wall from getting heated. absorb the fast neutron. protected the operating personal from exposure to radiations. All of these prevent the reactor wall from getting heated. absorb the fast neutron. ANSWER DOWNLOAD EXAMIANS APP
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