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 250 450 900 500 250 450 900 500 ANSWER DOWNLOAD EXAMIANS APP
Power Systems If the inertia constant H = 8 MJ/MVA for a 50 MVA generator, the stored energy is 400 MJ 8 MJ 200 MJ 50 MJ 400 MJ 8 MJ 200 MJ 50 MJ ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following statements is/are true regarding HVDC? All of these HVDC can utilize earth for its return path Corona loss is very much reduced in the dc line There is no skin effect in dc line All of these HVDC can utilize earth for its return path Corona loss is very much reduced in the dc line There is no skin effect in dc line ANSWER DOWNLOAD EXAMIANS APP
Power Systems What will be the ratio of the C.T. on the H.V side of a 3 - φ star / delta 33 / 11 kV transformer if the protecting CT on the LV side has a ratio of 300 : 5 ? 120 : 6 / √3. 150 : 4 / √3. 200 : 5 / √3. 100 : 5 / √3. 120 : 6 / √3. 150 : 4 / √3. 200 : 5 / √3. 100 : 5 / √3. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Efficiency of thermal power plant can be taken as efficiency of thermal cycle. generator efficiency. turbine efficiency. product of efficiencies of all stages. efficiency of thermal cycle. generator efficiency. turbine efficiency. product of efficiencies of all stages. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The method of neutral grounding affects the positive sequence network All of these zero sequence network negative sequence network positive sequence network All of these zero sequence network negative sequence network ANSWER DOWNLOAD EXAMIANS APP
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