Power Systems The pickup value of relay is 6.5 Amp and fault current in relay coil is 39 Amp. Its plug setting multiplier is 6 A. 7 A. 8 A. 10 A. 6 A. 7 A. 8 A. 10 A. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A transmission line has a surge impedance of 400 Ω for a length of the line of 200 km. If the length of line is increased to 400 km, then its surge impedance is 0 Ω 400 Ω 800 Ω 200 Ω 0 Ω 400 Ω 800 Ω 200 Ω 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 4 A -2 - j 1 A 5 + j 7 A 1 + j 2 A 1 + j 4 A -2 - j 1 A 5 + j 7 A 1 + j 2 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? 0.2 pu 1.375 pu 3.975 pu 2.4 pu 0.2 pu 1.375 pu 3.975 pu 2.4 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems In a 4*4 Y bus matrix the number of non zero elements are 12. Find the sparsity of the system? 1 0.25 0.75 0.5 1 0.25 0.75 0.5 ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following buses is/are not PV buses? reactive power support buses both 1 and 2 voltage control buses fixed shunt capacitor buses reactive power support buses both 1 and 2 voltage control buses fixed shunt capacitor buses ANSWER DOWNLOAD EXAMIANS APP
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