Power Systems The draft tube is provided to None of these increase the acting head on the water wheel. raise the water surface of the stream to create an artificial head. reduce the effect of water hammer. None of these increase the acting head on the water wheel. raise the water surface of the stream to create an artificial head. reduce the effect of water hammer. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A generator has reactances of sub transient (X")= 0.5 pu, transient (X') = 0.8 pu and synchronous reactance (X) = 5 pu. The voltages at these reactances are 1.2 V, 1.1 V and 1 V respectively. Find the corresponding sub transient fault current in pu? 3.975 pu 2.4 pu 0.2 pu 1.375 pu 3.975 pu 2.4 pu 0.2 pu 1.375 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems Zero sequence currents can flow from a line into a transformer bank if the windings are in delta / star. ground star / delta. delta / delta. star / grounded star. delta / star. ground star / delta. delta / delta. star / grounded star. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Phase shift occurs due to which of the following components? both 1 and 2 conductance inductance capacitance both 1 and 2 conductance inductance capacitance ANSWER DOWNLOAD EXAMIANS APP
Power Systems Buchholz relay is used for protection of none of these. alternator. transformer. bus bar. none of these. alternator. transformer. bus bar. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following circuit breakers produce least arc energy? Minimum oil CB. Air break CB. Plain oil CB. Air blast CB. Minimum oil CB. Air break CB. Plain oil CB. Air blast CB. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS