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? 4 8 5 2 4 8 5 2 ANSWER DOWNLOAD EXAMIANS APP
Power Systems Differential relays does not used for which of the following faults? through faults faults within a transformer both 1 and 2 faults within a generator through faults faults within a transformer both 1 and 2 faults within a generator ANSWER DOWNLOAD EXAMIANS APP
Power Systems The line currents of 3-phase supply are: IR = 3 + j 5 A IY =2 + j 2 A IB = -2 - j 1 A The zero sequence current will be 1 + j 2 A -2 - j 1 A 5 + j 7 A 1 + j 4 A 1 + j 2 A -2 - j 1 A 5 + j 7 A 1 + j 4 A 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? 2.4 pu 3.975 pu 0.2 pu 1.375 pu 2.4 pu 3.975 pu 0.2 pu 1.375 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems Attenuation occurs due to conductance resistance both 1 and 3 inductance conductance resistance both 1 and 3 inductance ANSWER DOWNLOAD EXAMIANS APP
Power Systems Zero voltage regulation is possible only for unity power factor leading power factor All of these lagging power factor unity power factor leading power factor All of these lagging power factor ANSWER DOWNLOAD EXAMIANS APP
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