Power Systems Oxide film arrestor has which of the following properties? It is expensive. Installed at points of transmission line where daily visit is difficult. Does not require daily charging. Both A and B. It is expensive. Installed at points of transmission line where daily visit is difficult. Does not require daily charging. Both A and B. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The insulation of modern EHV is designed based on switching voltage. lightning voltage. corona. RI. switching voltage. lightning voltage. corona. RI. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A network containing 50 buses in which 10 are the voltage control buses, 6 are the generator buses. Find the size of the Jacobian matrix? 83*83 33*33 34*34 84*84 83*83 33*33 34*34 84*84 ANSWER DOWNLOAD EXAMIANS APP
Power Systems The angular moment of 10 MVA generator is 0.2. Find the new value of angular moment for 20 MVA base? 0.1 pu 0.25 pu 0.2 pu 0.4 pu 0.1 pu 0.25 pu 0.2 pu 0.4 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems A buchholz relay is used for nether 1 nor 2 protection of a transformer against all internal faults both 1 and 2 protection of a transformer against all external faults nether 1 nor 2 protection of a transformer against all internal faults both 1 and 2 protection of a transformer against all external faults ANSWER DOWNLOAD EXAMIANS APP
Power Systems Power system network has a total power of 5000 MW at 50 Hz supplying to the different consumers. Frequency is varying at 1.5% per change of 2% load. Assume R =0.004 Hz/MW. Find the steady state frequency deviation if a sudden loss of 200 MW occur due to tripping of one of the transmission line? 0.52 Hz 0.48 Hz 50 Hz -0.52 Hz 0.52 Hz 0.48 Hz 50 Hz -0.52 Hz ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS