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? -0.92 0.92 -0.56 0.56 -0.92 0.92 -0.56 0.56 ANSWER DOWNLOAD EXAMIANS APP
Power Systems The commercial sources of energy are none of above. solar, wind, biomass. fossile fuels and radioactive substances. wood, animal wastes and agricultural wastes. none of above. solar, wind, biomass. fossile fuels and radioactive substances. wood, animal wastes and agricultural wastes. ANSWER DOWNLOAD EXAMIANS APP
Power Systems What is the function of economiser in steam boilers cooling collect ash particals improving thermal efficiency All of these cooling collect ash particals improving thermal efficiency All of these ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of following power plants is free from environmental problem Nuclear. Hydroelectric. Steam. Diesel engine. Nuclear. Hydroelectric. Steam. Diesel engine. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The unit protection scheme provides remote protection. back up protection. simultaneous protection. primary protection. remote protection. back up protection. simultaneous protection. primary protection. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Nuclear fission means graphite. moderator. breaking up of nuclear of heavy atoms into nearly equal parts. combination of two light nuclei. graphite. moderator. breaking up of nuclear of heavy atoms into nearly equal parts. combination of two light nuclei. ANSWER DOWNLOAD EXAMIANS APP
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