Power Systems Earth fault relay uses the which of the following sequence currents? negative sequence zero sequence positive sequence any of the above negative sequence zero sequence positive sequence any of the above ANSWER DOWNLOAD EXAMIANS APP
Power Systems For transmission line which one of the following relation is true? AD - BC = -1 AD - BC = 0 AD - BC = 1 AD + BC = 0 AD - BC = -1 AD - BC = 0 AD - BC = 1 AD + BC = 0 ANSWER DOWNLOAD EXAMIANS APP
Power Systems In a 3-phase transmission line, each phase is supported by 3 insulated discs, maximum voltage of each disc is 20 kV. Find the operating voltage of the transmission line per phase if efficiency of string is 80.6%. 83.76 kV 48.36 kV 20 kV 52.84 kV 83.76 kV 48.36 kV 20 kV 52.84 kV ANSWER DOWNLOAD EXAMIANS APP
Power Systems What will be the thermal efficiency of a 240 V, 1000 W electric kettle if it brings 2 liters of water at 15° C to boiling point 15 Minutes 80.25 %. 78.96 %. 79.33 %. 74.56 %. 80.25 %. 78.96 %. 79.33 %. 74.56 %. ANSWER DOWNLOAD EXAMIANS APP
Power Systems An isolated synchronous generator with transient reactance equal to 0.1 pu on a 100 MVA base is connected to the high voltage bus through a step up transformer of reactance 0.1 pu on a 100 MVA base. The fault level at the bus is 200 MVA 400 MVA 500 MVA 100 MVA 200 MVA 400 MVA 500 MVA 100 MVA ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following statements is/are true? In case of parallel transmission lines fault current reduces both 1 and 3 stability increases fault current increases fault current reduces both 1 and 3 stability increases fault current increases ANSWER DOWNLOAD EXAMIANS APP
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