Power Systems A 1-phase transmission line has an impedance (4 + 3j ) Ω. Find the power factor of the load for zero voltage regulation? 0.8 lag 0.8 lead 0.6 lead 0.6 lag 0.8 lag 0.8 lead 0.6 lead 0.6 lag ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which one of the following relays has the capability of anticipating the possible major fault in a transformer? Over current relay Buchholz relay Over fluxing relay Differential relay Over current relay Buchholz relay Over fluxing relay Differential relay ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following circuit breakers produce least arc energy? Air break CB. Air blast CB. Plain oil CB. Minimum oil CB. Air break CB. Air blast CB. Plain oil CB. Minimum oil CB. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The fact that current density is higher at the surface when compared to centre is known as skin effect All of these carona proximity effect skin effect All of these carona proximity effect ANSWER DOWNLOAD EXAMIANS APP
Power Systems Find the relation between sub transient (X"), transient (X') and synchronous reactance (X) ? X" < X' > X X" > X' >X X" < X' < X X" > X' < X X" < X' > X X" > X' >X X" < X' < X X" > X' < X ANSWER DOWNLOAD EXAMIANS APP
Power Systems A transmission line has (2 + j4)Ω impedance, 100 MVA and base voltage is 10 KV. Find the per unit impedance value of transmission line? (0.5 + j1 ) pu (4 + j8 ) pu (2 + j4 ) pu (1 + j2 ) pu (0.5 + j1 ) pu (4 + j8 ) pu (2 + j4 ) pu (1 + j2 ) pu ANSWER DOWNLOAD EXAMIANS APP
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