Power Systems The unit protection scheme provides primary protection. back up protection. simultaneous protection. remote protection. primary protection. back up protection. simultaneous protection. remote protection. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Three generators rated 100 MVA, 11 kV have an impedance of 0.15 pu each. If in the same plant, these generators are being replaced by a single equivalent generator, the effective impedance of equivalent generator will be 0.05 pu 0.15 pu 0.25 pu 0.45 pu 0.05 pu 0.15 pu 0.25 pu 0.45 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems The conductor carries more current on surface as compared to core. This is called as corona effect skin effect All of these unsymmetrical fault corona effect skin effect All of these unsymmetrical fault ANSWER DOWNLOAD EXAMIANS APP
Power Systems Lightning arresters are used for protection of equipment from short circuits protection of equipment from external lightning All of these protection of equipment from open circuits protection of equipment from short circuits protection of equipment from external lightning All of these protection of equipment from open circuits ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 100 MVA alternator operating at full load at 50 Hz. H = 4 MWsec/MVA, Td = 0.5 sec. One of the transmission line is tripped. So that output of generator is reduced to 70 MW. Find the frequency deviation during this time? 0.56 0.92 -0.92 -0.56 0.56 0.92 -0.92 -0.56 ANSWER DOWNLOAD EXAMIANS APP
Power Systems The function of reflector is to reduce the speed of the neutrons. bounce back most of the neutrons that escape from the fuel core. none of above. stop the chain reaction. reduce the speed of the neutrons. bounce back most of the neutrons that escape from the fuel core. none of above. stop the chain reaction. ANSWER DOWNLOAD EXAMIANS APP
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