Power Systems An alternator having an induced emf of 1.6 pu is connected to an infinite bus of 1 pu. If the bus bar has reactance of 0.6 pu and alternator has reactance of 0.2 pu, what is the maximum power that can be transferred? 2.67 pu 6 pu 2 pu 5 pu 2.67 pu 6 pu 2 pu 5 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems The daily energy produced in thermal power station is 720 MWh at a load factor of 0.6. What is the maximum demand of the station? 72 MW 50 MW 720 MW 30 MW 72 MW 50 MW 720 MW 30 MW ANSWER DOWNLOAD EXAMIANS APP
Power Systems The skin effect of conductor will increase when All of these diameter decrease frequency decrease resistivity decrease All of these diameter decrease frequency decrease resistivity decrease ANSWER DOWNLOAD EXAMIANS APP
Power Systems Find the number of insulator discs required in string insulator, if operating voltage is 220 kV and maximum voltage of each disc is 11 kV? 10 21 20 13 10 21 20 13 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 -0.56 -0.92 0.92 0.56 -0.56 -0.92 0.92 ANSWER DOWNLOAD EXAMIANS APP
Power Systems A loss less transmission line having surge impedance loading (SIL) of 2280 MW is provided with a uniformly distributed series capacitive compensation of 30 %. Then SIL of compensated transmission line will be 1835 MW. 3257 MW. 2725 MW. 2280 MW. 1835 MW. 3257 MW. 2725 MW. 2280 MW. ANSWER DOWNLOAD EXAMIANS APP
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