Power Systems Zero sequence currents can flow from a line into a transformer bank if the windings are in ground star / delta. delta / delta. delta / star. star / grounded star. ground star / delta. delta / delta. delta / star. star / grounded star. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A pin type insulator has 100 kV puncture voltage. If 10 kV flash over voltage occurred in a transmission line, then find the safety factor of insulator? 0.1 10 1000 0.001 0.1 10 1000 0.001 ANSWER DOWNLOAD EXAMIANS APP
Power Systems The receiving end voltage for a long line under no load condition is more than the sending end voltage any of the above equal to the sending end voltage less than the sending end voltage more than the sending end voltage any of the above equal to the sending end voltage less than the sending end voltage ANSWER DOWNLOAD EXAMIANS APP
Power Systems To protect the power transformer ( Y-Y with neutral grounded) against fault, which type of connection do the current transformers have? Δ-Δ connection Y-Y connection Y-Δ connection Δ-Y connection Δ-Δ connection Y-Y connection Y-Δ connection Δ-Y connection ANSWER DOWNLOAD EXAMIANS APP
Power Systems In a 4 bus,4×4 Y bus matrix the number of non zero elements are 12. Find the number of transmission lines? 8 4 2 5 8 4 2 5 ANSWER DOWNLOAD EXAMIANS APP
Power Systems When a transformer is loaded, the secondary terminal voltage gains. That means power factor is lagging. leading. unity. zero. lagging. leading. unity. zero. ANSWER DOWNLOAD EXAMIANS APP
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