Power Systems For complete protection of 3-phase system from the short circuit faults minimum number of relays required are three one six two three one six two ANSWER DOWNLOAD EXAMIANS APP
Power Systems Zero sequence currents can flow from a line into a transformer bank if the windings are in star / grounded star. ground star / delta. delta / delta. delta / star. star / grounded star. ground star / delta. delta / delta. delta / star. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The neutral of 10 MVA, 11 kV alternator is earthed through a resistance of 5 ohms. The fault ready is set to operate at 0.75 A. The current transformers have a ratio of 1000/5. What is the percentage of the alternator winding is protected? 11.8% 15% 85% 88.2% 11.8% 15% 85% 88.2% ANSWER DOWNLOAD EXAMIANS APP
Power Systems The overall efficiency of a steam power plant equal to the Rankine cycle. product of boiler efficiency, turbine efficiency and generator efficiency. binary vapor cycle. regenerative cycle. the Rankine cycle. product of boiler efficiency, turbine efficiency and generator efficiency. binary vapor cycle. regenerative cycle. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The shape of the disc of an induction disc relay is spiral. elliptical. none of these. circular. spiral. elliptical. none of these. circular. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The annual depreciation of hydro power plant is about 15 - 20 %. 0.5 - 1.5 %. 10 - 15 %. 20 - 25 %. 15 - 20 %. 0.5 - 1.5 %. 10 - 15 %. 20 - 25 %. ANSWER DOWNLOAD EXAMIANS APP
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