Power Systems Buchholz relay is used for protection of none of these. bus bar. alternator. transformer. none of these. bus bar. alternator. transformer. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A thermal protection relay provides protection against what? any of the above Temperature Short circuit Over load any of the above Temperature Short circuit Over load ANSWER DOWNLOAD EXAMIANS APP
Power Systems The surge impedance of a 400 km long overhead transmission line is 420 Ω. For a 200 km length of the same line, the surge impedance will be 840 Ω 210 Ω 400 Ω 420 Ω 840 Ω 210 Ω 400 Ω 420 Ω ANSWER DOWNLOAD EXAMIANS APP
Power Systems For a lossy transmission line, the characteristic impedance does not depend on The permittivity of the dielectric separating the conductor. The conductivity of conductors. The load terminating the line. The operating frequency of the line. The permittivity of the dielectric separating the conductor. The conductivity of conductors. The load terminating the line. The operating frequency of the line. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The zero sequence current of a generator for line to ground fault is j3 pu. Then the current through the neutral during the fault is j6 pu j9 pu j3 pu j1 pu j6 pu j9 pu j3 pu j1 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following decides the insulation level of 400 kV, EHV line? switching over voltage skin effect lighting voltage radio interference switching over voltage skin effect lighting voltage radio interference ANSWER DOWNLOAD EXAMIANS APP
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