Power Systems The conductor carries more current on surface as compared to core. This is called as corona effect unsymmetrical fault All of these skin effect corona effect unsymmetrical fault All of these skin effect ANSWER DOWNLOAD EXAMIANS APP
Power Systems A hydroelectric power station is commonly found in swamps. grasslands. desert areas. hilly areas. swamps. grasslands. desert areas. hilly areas. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Differential relays does not used for which of the following faults? through faults faults within a generator both 1 and 2 faults within a transformer through faults faults within a generator both 1 and 2 faults within a transformer 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? -0.85 Hz 0.76 Hz 0.85 Hz -0.76 Hz -0.85 Hz 0.76 Hz 0.85 Hz -0.76 Hz ANSWER DOWNLOAD EXAMIANS APP
Power Systems The specific speed ( NS ) of turbine is given by P√( N ) / H3/2. none of these. N√( P ) / H1.25. N√( P ) / H2/3. P√( N ) / H3/2. none of these. N√( P ) / H1.25. N√( P ) / H2/3. ANSWER DOWNLOAD EXAMIANS APP
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
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